CTBTO 2026Evidence & methods

Across AIS sets

AIS populations

The set arithmetic used here

102,629AIS records97,549 AMSA + 5,080 ARA RAM
97,549AMSA AIS records8,984 RAM + 88,565 non-RAM
674Juan AIS records65 RAM + 609 non-RAM
21Highlighted RAM AIS recordsAll within Juan ∩ AMSA RAM

AIS records

Band SL, fast TL, and predicted band RL across sets

Band SL

One value for each AIS record and band.

All AIS

102,629 records · 107,158 receiver instances
161.6median at 63 Hz
All AIS Band SLEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.14017020010 Hz · median 152.1 dB · p10 to p90 29.8 to 163.3 dB12.5 Hz · median 154.2 dB · p10 to p90 30.9 to 165.2 dB16 Hz · median 156.8 dB · p10 to p90 32.0 to 167.6 dB20 Hz · median 159.3 dB · p10 to p90 33.0 to 169.8 dB25 Hz · median 162.1 dB · p10 to p90 34.0 to 172.3 dB31.5 Hz · median 165.0 dB · p10 to p90 35.1 to 175.1 dB40 Hz · median 166.4 dB · p10 to p90 36.1 to 177.1 dB50 Hz · median 164.6 dB · p10 to p90 37.1 to 177.6 dB63 Hz · median 161.6 dB · p10 to p90 38.0 to 176.8 dB80 Hz · median 158.8 dB · p10 to p90 38.9 to 174.7 dB100 Hz · median 157.6 dB · p10 to p90 39.5 to 171.6 dB10204063100Frequency (Hz)Band SL (dB re 1 µPa m)

AMSA

97,549 records
161.3median at 63 Hz
AMSA Band SLEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.14017020010 Hz · median 151.7 dB · p10 to p90 28.0 to 162.1 dB12.5 Hz · median 153.9 dB · p10 to p90 29.0 to 164.1 dB16 Hz · median 156.4 dB · p10 to p90 30.1 to 166.6 dB20 Hz · median 158.9 dB · p10 to p90 31.1 to 168.9 dB25 Hz · median 161.8 dB · p10 to p90 32.2 to 171.5 dB31.5 Hz · median 164.7 dB · p10 to p90 33.2 to 174.3 dB40 Hz · median 166.1 dB · p10 to p90 34.3 to 176.4 dB50 Hz · median 164.2 dB · p10 to p90 35.3 to 177.0 dB63 Hz · median 161.3 dB · p10 to p90 36.4 to 176.2 dB80 Hz · median 158.3 dB · p10 to p90 37.4 to 173.9 dB100 Hz · median 157.2 dB · p10 to p90 38.2 to 170.6 dB10204063100Frequency (Hz)Band SL (dB re 1 µPa m)

ARA RAM

5,080 records · 9,609 receiver instances
174.0median at 63 Hz
ARA RAM Band SLEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.14017020010 Hz · median 161.4 dB · p10 to p90 97.8 to 172.0 dB12.5 Hz · median 163.2 dB · p10 to p90 99.1 to 173.7 dB16 Hz · median 165.2 dB · p10 to p90 100.3 to 175.6 dB20 Hz · median 167.0 dB · p10 to p90 102.6 to 177.5 dB25 Hz · median 168.8 dB · p10 to p90 104.1 to 179.6 dB31.5 Hz · median 170.8 dB · p10 to p90 105.3 to 182.0 dB40 Hz · median 173.3 dB · p10 to p90 107.0 to 184.0 dB50 Hz · median 174.4 dB · p10 to p90 108.9 to 184.3 dB63 Hz · median 174.0 dB · p10 to p90 108.9 to 184.3 dB80 Hz · median 172.7 dB · p10 to p90 108.6 to 183.5 dB100 Hz · median 170.8 dB · p10 to p90 108.2 to 181.9 dB10204063100Frequency (Hz)Band SL (dB re 1 µPa m)

AMSA RAM

8,984 records
159.2median at 63 Hz
AMSA RAM Band SLEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.14017020010 Hz · median 150.0 dB · p10 to p90 14.5 to 160.6 dB12.5 Hz · median 152.1 dB · p10 to p90 15.5 to 162.7 dB16 Hz · median 154.6 dB · p10 to p90 16.6 to 165.1 dB20 Hz · median 157.1 dB · p10 to p90 17.6 to 167.4 dB25 Hz · median 159.8 dB · p10 to p90 18.6 to 169.9 dB31.5 Hz · median 162.8 dB · p10 to p90 19.7 to 172.5 dB40 Hz · median 164.0 dB · p10 to p90 20.8 to 174.9 dB50 Hz · median 162.1 dB · p10 to p90 21.7 to 176.3 dB63 Hz · median 159.2 dB · p10 to p90 22.7 to 175.8 dB80 Hz · median 156.6 dB · p10 to p90 23.5 to 173.3 dB100 Hz · median 155.4 dB · p10 to p90 24.1 to 169.9 dB10204063100Frequency (Hz)Band SL (dB re 1 µPa m)

AMSA non-RAM

88,565 records
161.4median at 63 Hz
AMSA non-RAM Band SLEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.14017020010 Hz · median 151.8 dB · p10 to p90 29.8 to 162.2 dB12.5 Hz · median 154.0 dB · p10 to p90 30.9 to 164.2 dB16 Hz · median 156.6 dB · p10 to p90 32.0 to 166.7 dB20 Hz · median 159.1 dB · p10 to p90 33.0 to 169.0 dB25 Hz · median 161.9 dB · p10 to p90 34.0 to 171.7 dB31.5 Hz · median 164.9 dB · p10 to p90 35.1 to 174.6 dB40 Hz · median 166.2 dB · p10 to p90 36.1 to 176.6 dB50 Hz · median 164.3 dB · p10 to p90 37.1 to 177.0 dB63 Hz · median 161.4 dB · p10 to p90 38.0 to 176.3 dB80 Hz · median 158.5 dB · p10 to p90 38.9 to 173.9 dB100 Hz · median 157.4 dB · p10 to p90 39.5 to 170.7 dB10204063100Frequency (Hz)Band SL (dB re 1 µPa m)

Juan 674

674 records
174.1median at 63 Hz
Juan 674 Band SLEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.14017020010 Hz · median 159.1 dB · p10 to p90 149.6 to 174.2 dB12.5 Hz · median 161.2 dB · p10 to p90 151.8 to 176.1 dB16 Hz · median 163.5 dB · p10 to p90 154.4 to 178.3 dB20 Hz · median 165.8 dB · p10 to p90 157.1 to 180.4 dB25 Hz · median 168.4 dB · p10 to p90 160.0 to 182.8 dB31.5 Hz · median 171.2 dB · p10 to p90 162.9 to 185.8 dB40 Hz · median 173.4 dB · p10 to p90 164.1 to 188.9 dB50 Hz · median 174.5 dB · p10 to p90 162.2 to 190.3 dB63 Hz · median 174.1 dB · p10 to p90 159.0 to 188.3 dB80 Hz · median 171.9 dB · p10 to p90 156.0 to 185.4 dB100 Hz · median 168.5 dB · p10 to p90 154.9 to 182.9 dB10204063100Frequency (Hz)Band SL (dB re 1 µPa m)

Highlighted 21

21 records
187.4median at 63 Hz
Highlighted 21 Band SLEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.14017020010 Hz · median 172.9 dB · p10 to p90 166.8 to 174.7 dB12.5 Hz · median 175.0 dB · p10 to p90 168.9 to 176.8 dB16 Hz · median 177.4 dB · p10 to p90 171.3 to 179.4 dB20 Hz · median 179.8 dB · p10 to p90 173.7 to 182.0 dB25 Hz · median 182.7 dB · p10 to p90 176.3 to 184.6 dB31.5 Hz · median 185.7 dB · p10 to p90 179.3 to 187.6 dB40 Hz · median 188.5 dB · p10 to p90 182.5 to 190.4 dB50 Hz · median 189.4 dB · p10 to p90 183.8 to 191.7 dB63 Hz · median 187.4 dB · p10 to p90 181.4 to 189.7 dB80 Hz · median 184.1 dB · p10 to p90 178.4 to 186.4 dB100 Hz · median 180.9 dB · p10 to p90 175.3 to 183.2 dB10204063100Frequency (Hz)Band SL (dB re 1 µPa m)

Forwards · RAM

The Highlighted 21 across all bands

All 21 have the fixed 6 m branch. Nineteen, including Igor, also have an admitted conditional draught branch.
21 records
Fixed 6 m RAM Band RL distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.508311510 Hz · median 70.1 dB · p10 to p90 60.6 to 79.3 dB12.5 Hz · median 71.8 dB · p10 to p90 60.0 to 75.3 dB16 Hz · median 76.6 dB · p10 to p90 67.1 to 86.2 dB20 Hz · median 82.0 dB · p10 to p90 67.4 to 89.4 dB25 Hz · median 86.4 dB · p10 to p90 77.2 to 98.3 dB31.5 Hz · median 91.0 dB · p10 to p90 81.4 to 97.6 dB40 Hz · median 91.5 dB · p10 to p90 88.7 to 102.8 dB50 Hz · median 94.9 dB · p10 to p90 82.2 to 104.5 dB63 Hz · median 97.9 dB · p10 to p90 87.6 to 105.3 dB80 Hz · median 91.3 dB · p10 to p90 84.9 to 98.2 dB100 Hz · median 96.2 dB · p10 to p90 84.1 to 102.4 dB10204063100Frequency (Hz)Band RL (dB re 1 µPa)

The intervals show how Band RL varies across records with this source depth branch. The matrix shows all 21 rows and marks the two unavailable conditional branches.

Every Highlighted record

1012.516202531.540506380100Rank 1Rank 1, Bulker, 10 hertz, Band RL 79.5 decibelsRank 1, Bulker, 12.5 hertz, Band RL 55.2 decibelsRank 1, Bulker, 16 hertz, Band RL 77.3 decibelsRank 1, Bulker, 20 hertz, Band RL 88.8 decibelsRank 1, Bulker, 25 hertz, Band RL 98.3 decibelsRank 1, Bulker, 31.5 hertz, Band RL 92.8 decibelsRank 1, Bulker, 40 hertz, Band RL 102.0 decibelsRank 1, Bulker, 50 hertz, Band RL 104.5 decibelsRank 1, Bulker, 63 hertz, Band RL 109.2 decibelsRank 1, Bulker, 80 hertz, Band RL 91.4 decibelsRank 1, Bulker, 100 hertz, Band RL 101.8 decibelsRank 2Rank 2, Bulker, 10 hertz, Band RL 70.1 decibelsRank 2, Bulker, 12.5 hertz, Band RL 76.8 decibelsRank 2, Bulker, 16 hertz, Band RL 88.3 decibelsRank 2, Bulker, 20 hertz, Band RL 83.2 decibelsRank 2, Bulker, 25 hertz, Band RL 92.6 decibelsRank 2, Bulker, 31.5 hertz, Band RL 91.8 decibelsRank 2, Bulker, 40 hertz, Band RL 88.7 decibelsRank 2, Bulker, 50 hertz, Band RL 106.0 decibelsRank 2, Bulker, 63 hertz, Band RL 105.1 decibelsRank 2, Bulker, 80 hertz, Band RL 98.9 decibelsRank 2, Bulker, 100 hertz, Band RL 106.5 decibelsRank 3Rank 3, Bulker, 10 hertz, Band RL 65.5 decibelsRank 3, Bulker, 12.5 hertz, Band RL 71.1 decibelsRank 3, Bulker, 16 hertz, Band RL 86.2 decibelsRank 3, Bulker, 20 hertz, Band RL 84.0 decibelsRank 3, Bulker, 25 hertz, Band RL 94.5 decibelsRank 3, Bulker, 31.5 hertz, Band RL 97.8 decibelsRank 3, Bulker, 40 hertz, Band RL 102.8 decibelsRank 3, Bulker, 50 hertz, Band RL 105.5 decibelsRank 3, Bulker, 63 hertz, Band RL 107.9 decibelsRank 3, Bulker, 80 hertz, Band RL 98.4 decibelsRank 3, Bulker, 100 hertz, Band RL 102.6 decibelsRank 4Rank 4, Bulker, 10 hertz, Band RL 75.8 decibelsRank 4, Bulker, 12.5 hertz, Band RL 79.5 decibelsRank 4, Bulker, 16 hertz, Band RL 82.3 decibelsRank 4, Bulker, 20 hertz, Band RL 85.5 decibelsRank 4, Bulker, 25 hertz, Band RL 94.4 decibelsRank 4, Bulker, 31.5 hertz, Band RL 93.4 decibelsRank 4, Bulker, 40 hertz, Band RL 104.9 decibelsRank 4, Bulker, 50 hertz, Band RL 102.4 decibelsRank 4, Bulker, 63 hertz, Band RL 104.8 decibelsRank 4, Bulker, 80 hertz, Band RL 90.7 decibelsRank 4, Bulker, 100 hertz, Band RL 97.3 decibelsRank 5Rank 5, Container Ship, 10 hertz, Band RL 79.3 decibelsRank 5, Container Ship, 12.5 hertz, Band RL 75.3 decibelsRank 5, Container Ship, 16 hertz, Band RL 87.7 decibelsRank 5, Container Ship, 20 hertz, Band RL 92.1 decibelsRank 5, Container Ship, 25 hertz, Band RL 80.0 decibelsRank 5, Container Ship, 31.5 hertz, Band RL 93.8 decibelsRank 5, Container Ship, 40 hertz, Band RL 102.1 decibelsRank 5, Container Ship, 50 hertz, Band RL 99.3 decibelsRank 5, Container Ship, 63 hertz, Band RL 87.5 decibelsRank 5, Container Ship, 80 hertz, Band RL 95.3 decibelsRank 5, Container Ship, 100 hertz, Band RL 102.4 decibelsRank 6Rank 6, Container Ship, 10 hertz, Band RL 76.9 decibelsRank 6, Container Ship, 12.5 hertz, Band RL 72.8 decibelsRank 6, Container Ship, 16 hertz, Band RL 80.8 decibelsRank 6, Container Ship, 20 hertz, Band RL 89.4 decibelsRank 6, Container Ship, 25 hertz, Band RL 98.6 decibelsRank 6, Container Ship, 31.5 hertz, Band RL 97.6 decibelsRank 6, Container Ship, 40 hertz, Band RL 104.9 decibelsRank 6, Container Ship, 50 hertz, Band RL 104.5 decibelsRank 6, Container Ship, 63 hertz, Band RL 98.9 decibelsRank 6, Container Ship, 80 hertz, Band RL 85.3 decibelsRank 6, Container Ship, 100 hertz, Band RL 101.3 decibelsRank 7Rank 7, Container Ship, 10 hertz, Band RL 80.6 decibelsRank 7, Container Ship, 12.5 hertz, Band RL 72.9 decibelsRank 7, Container Ship, 16 hertz, Band RL 66.1 decibelsRank 7, Container Ship, 20 hertz, Band RL 89.6 decibelsRank 7, Container Ship, 25 hertz, Band RL 100.5 decibelsRank 7, Container Ship, 31.5 hertz, Band RL 100.6 decibelsRank 7, Container Ship, 40 hertz, Band RL 91.5 decibelsRank 7, Container Ship, 50 hertz, Band RL 104.5 decibelsRank 7, Container Ship, 63 hertz, Band RL 104.0 decibelsRank 7, Container Ship, 80 hertz, Band RL 98.0 decibelsRank 7, Container Ship, 100 hertz, Band RL 98.1 decibelsRank 8Rank 8, Bulker, 10 hertz, Band RL 53.0 decibelsRank 8, Bulker, 12.5 hertz, Band RL 74.2 decibelsRank 8, Bulker, 16 hertz, Band RL 79.9 decibelsRank 8, Bulker, 20 hertz, Band RL 83.2 decibelsRank 8, Bulker, 25 hertz, Band RL 86.4 decibelsRank 8, Bulker, 31.5 hertz, Band RL 91.3 decibelsRank 8, Bulker, 40 hertz, Band RL 98.2 decibelsRank 8, Bulker, 50 hertz, Band RL 91.3 decibelsRank 8, Bulker, 63 hertz, Band RL 93.8 decibelsRank 8, Bulker, 80 hertz, Band RL 98.2 decibelsRank 8, Bulker, 100 hertz, Band RL 96.1 decibelsRank 9Rank 9, Bulker, 10 hertz, Band RL 73.2 decibelsRank 9, Bulker, 12.5 hertz, Band RL 74.2 decibelsRank 9, Bulker, 16 hertz, Band RL 69.1 decibelsRank 9, Bulker, 20 hertz, Band RL 58.6 decibelsRank 9, Bulker, 25 hertz, Band RL 88.4 decibelsRank 9, Bulker, 31.5 hertz, Band RL 86.0 decibelsRank 9, Bulker, 40 hertz, Band RL 98.2 decibelsRank 9, Bulker, 50 hertz, Band RL 94.9 decibelsRank 9, Bulker, 63 hertz, Band RL 97.9 decibelsRank 9, Bulker, 80 hertz, Band RL 87.7 decibelsRank 9, Bulker, 100 hertz, Band RL 84.1 decibelsRank 10Rank 10, Bulker, 10 hertz, Band RL 62.0 decibelsRank 10, Bulker, 12.5 hertz, Band RL 67.1 decibelsRank 10, Bulker, 16 hertz, Band RL 78.5 decibelsRank 10, Bulker, 20 hertz, Band RL 51.4 decibelsRank 10, Bulker, 25 hertz, Band RL 84.1 decibelsRank 10, Bulker, 31.5 hertz, Band RL 86.8 decibelsRank 10, Bulker, 40 hertz, Band RL 89.3 decibelsRank 10, Bulker, 50 hertz, Band RL 90.0 decibelsRank 10, Bulker, 63 hertz, Band RL 95.3 decibelsRank 10, Bulker, 80 hertz, Band RL 89.1 decibelsRank 10, Bulker, 100 hertz, Band RL 92.9 decibelsRank 11Rank 11, Bulker, 10 hertz, Band RL 62.6 decibelsRank 11, Bulker, 12.5 hertz, Band RL 73.5 decibelsRank 11, Bulker, 16 hertz, Band RL 76.0 decibelsRank 11, Bulker, 20 hertz, Band RL 70.0 decibelsRank 11, Bulker, 25 hertz, Band RL 77.0 decibelsRank 11, Bulker, 31.5 hertz, Band RL 86.0 decibelsRank 11, Bulker, 40 hertz, Band RL 90.4 decibelsRank 11, Bulker, 50 hertz, Band RL 94.4 decibelsRank 11, Bulker, 63 hertz, Band RL 90.7 decibelsRank 11, Bulker, 80 hertz, Band RL 82.5 decibelsRank 11, Bulker, 100 hertz, Band RL 96.2 decibelsRank 12Rank 12, Bulker, 10 hertz, Band RL 70.6 decibelsRank 12, Bulker, 12.5 hertz, Band RL 71.3 decibelsRank 12, Bulker, 16 hertz, Band RL 76.4 decibelsRank 12, Bulker, 20 hertz, Band RL 71.6 decibelsRank 12, Bulker, 25 hertz, Band RL 82.2 decibelsRank 12, Bulker, 31.5 hertz, Band RL 83.8 decibelsRank 12, Bulker, 40 hertz, Band RL 90.6 decibelsRank 12, Bulker, 50 hertz, Band RL 97.0 decibelsRank 12, Bulker, 63 hertz, Band RL 98.0 decibelsRank 12, Bulker, 80 hertz, Band RL 92.6 decibelsRank 12, Bulker, 100 hertz, Band RL 94.5 decibelsRank 13Rank 13, Bulker, 10 hertz, Band RL 72.6 decibelsRank 13, Bulker, 12.5 hertz, Band RL 72.0 decibelsRank 13, Bulker, 16 hertz, Band RL 83.8 decibelsRank 13, Bulker, 20 hertz, Band RL 76.0 decibelsRank 13, Bulker, 25 hertz, Band RL 87.7 decibelsRank 13, Bulker, 31.5 hertz, Band RL 94.1 decibelsRank 13, Bulker, 40 hertz, Band RL 98.4 decibelsRank 13, Bulker, 50 hertz, Band RL 94.9 decibelsRank 13, Bulker, 63 hertz, Band RL 100.8 decibelsRank 13, Bulker, 80 hertz, Band RL 96.0 decibelsRank 13, Bulker, 100 hertz, Band RL 97.8 decibelsRank 14Rank 14, Bulker, 10 hertz, Band RL 70.4 decibelsRank 14, Bulker, 12.5 hertz, Band RL 75.3 decibelsRank 14, Bulker, 16 hertz, Band RL 77.0 decibelsRank 14, Bulker, 20 hertz, Band RL 87.7 decibelsRank 14, Bulker, 25 hertz, Band RL 81.9 decibelsRank 14, Bulker, 31.5 hertz, Band RL 94.8 decibelsRank 14, Bulker, 40 hertz, Band RL 90.3 decibelsRank 14, Bulker, 50 hertz, Band RL 93.7 decibelsRank 14, Bulker, 63 hertz, Band RL 90.0 decibelsRank 14, Bulker, 80 hertz, Band RL 91.3 decibelsRank 14, Bulker, 100 hertz, Band RL 94.4 decibelsRank 15Rank 15, Bulker, 10 hertz, Band RL 60.6 decibelsRank 15, Bulker, 12.5 hertz, Band RL 56.1 decibelsRank 15, Bulker, 16 hertz, Band RL 69.3 decibelsRank 15, Bulker, 20 hertz, Band RL 81.1 decibelsRank 15, Bulker, 25 hertz, Band RL 80.6 decibelsRank 15, Bulker, 31.5 hertz, Band RL 81.7 decibelsRank 15, Bulker, 40 hertz, Band RL 93.6 decibelsRank 15, Bulker, 50 hertz, Band RL 96.3 decibelsRank 15, Bulker, 63 hertz, Band RL 88.8 decibelsRank 15, Bulker, 80 hertz, Band RL 90.5 decibelsRank 15, Bulker, 100 hertz, Band RL 87.9 decibelsRank 16Rank 16, Bulker, 10 hertz, Band RL 70.3 decibelsRank 16, Bulker, 12.5 hertz, Band RL 65.5 decibelsRank 16, Bulker, 16 hertz, Band RL 76.4 decibelsRank 16, Bulker, 20 hertz, Band RL 82.5 decibelsRank 16, Bulker, 25 hertz, Band RL 90.7 decibelsRank 16, Bulker, 31.5 hertz, Band RL 71.1 decibelsRank 16, Bulker, 40 hertz, Band RL 91.2 decibelsRank 16, Bulker, 50 hertz, Band RL 82.2 decibelsRank 16, Bulker, 63 hertz, Band RL 105.3 decibelsRank 16, Bulker, 80 hertz, Band RL 95.9 decibelsRank 16, Bulker, 100 hertz, Band RL 96.8 decibelsRank 17Rank 17, Bulker, 10 hertz, Band RL 59.7 decibelsRank 17, Bulker, 12.5 hertz, Band RL 60.0 decibelsRank 17, Bulker, 16 hertz, Band RL 57.0 decibelsRank 17, Bulker, 20 hertz, Band RL 75.3 decibelsRank 17, Bulker, 25 hertz, Band RL 77.2 decibelsRank 17, Bulker, 31.5 hertz, Band RL 84.2 decibelsRank 17, Bulker, 40 hertz, Band RL 76.5 decibelsRank 17, Bulker, 50 hertz, Band RL 80.7 decibelsRank 17, Bulker, 63 hertz, Band RL 87.6 decibelsRank 17, Bulker, 80 hertz, Band RL 84.9 decibelsRank 17, Bulker, 100 hertz, Band RL 83.4 decibelsRank 18Rank 18, Bulker, 10 hertz, Band RL 69.9 decibelsRank 18, Bulker, 12.5 hertz, Band RL 64.5 decibelsRank 18, Bulker, 16 hertz, Band RL 76.6 decibelsRank 18, Bulker, 20 hertz, Band RL 76.0 decibelsRank 18, Bulker, 25 hertz, Band RL 78.5 decibelsRank 18, Bulker, 31.5 hertz, Band RL 91.0 decibelsRank 18, Bulker, 40 hertz, Band RL 90.1 decibelsRank 18, Bulker, 50 hertz, Band RL 81.6 decibelsRank 18, Bulker, 63 hertz, Band RL 95.7 decibelsRank 18, Bulker, 80 hertz, Band RL 81.8 decibelsRank 18, Bulker, 100 hertz, Band RL 90.3 decibelsRank 19Rank 19, Bulker, 10 hertz, Band RL 65.0 decibelsRank 19, Bulker, 12.5 hertz, Band RL 71.8 decibelsRank 19, Bulker, 16 hertz, Band RL 67.6 decibelsRank 19, Bulker, 20 hertz, Band RL 80.8 decibelsRank 19, Bulker, 25 hertz, Band RL 86.6 decibelsRank 19, Bulker, 31.5 hertz, Band RL 81.4 decibelsRank 19, Bulker, 40 hertz, Band RL 97.3 decibelsRank 19, Bulker, 50 hertz, Band RL 92.2 decibelsRank 19, Bulker, 63 hertz, Band RL 93.0 decibelsRank 19, Bulker, 80 hertz, Band RL 92.8 decibelsRank 19, Bulker, 100 hertz, Band RL 98.0 decibelsRank 20Rank 20, Bulker, 10 hertz, Band RL 62.6 decibelsRank 20, Bulker, 12.5 hertz, Band RL 64.1 decibelsRank 20, Bulker, 16 hertz, Band RL 67.1 decibelsRank 20, Bulker, 20 hertz, Band RL 82.0 decibelsRank 20, Bulker, 25 hertz, Band RL 83.2 decibelsRank 20, Bulker, 31.5 hertz, Band RL 85.9 decibelsRank 20, Bulker, 40 hertz, Band RL 90.0 decibelsRank 20, Bulker, 50 hertz, Band RL 98.4 decibelsRank 20, Bulker, 63 hertz, Band RL 80.5 decibelsRank 20, Bulker, 80 hertz, Band RL 87.6 decibelsRank 20, Bulker, 100 hertz, Band RL 90.4 decibelsIgorIgor, Tanker, 10 hertz, Band RL 62.4 decibelsIgor, Tanker, 12.5 hertz, Band RL 63.2 decibelsIgor, Tanker, 16 hertz, Band RL 72.2 decibelsIgor, Tanker, 20 hertz, Band RL 67.4 decibelsIgor, Tanker, 25 hertz, Band RL 77.0 decibelsIgor, Tanker, 31.5 hertz, Band RL 79.6 decibelsIgor, Tanker, 40 hertz, Band RL 84.3 decibelsIgor, Tanker, 50 hertz, Band RL 92.3 decibelsIgor, Tanker, 63 hertz, Band RL 98.3 decibelsIgor, Tanker, 80 hertz, Band RL 88.6 decibelsIgor, Tanker, 100 hertz, Band RL 69.1 decibelsFrequency (Hz)
50.0115.0Band RL (dB)

What the sweeps can and cannot support

The sweep fields are a set of TL surfaces, but downstream RL coverage by record is partial. The matrix exposes that missingness before showing any selected field.

9Direct path requiredNo evaluated RL values · 189 waiting
4Legacy TL onlyNo evaluated RL values
9Materialized35 evaluated
4Partly materialized110 evaluated · 3,348 waiting
5TL only by declarationNo evaluated RL values
Values & coverage
Period · array56.381012.516202531.540506380100
2026-03-31 · H10NTLTLTLwaitwaitwaitwaitwaitwaitwaitwaitTLTLwait
2026-03-31 · H10STLTL··1/151/15·····TLTL·
2025-01 · H01W···········65/171443/1714·
2025-04 · H01W···········TLTL·
2025-06 · H01W···········TLTL·
2025-07 · H01W···········TLTL·
2025-09 · H01W···········TLTL·
2025-10 · H01W···········TL··

Backwards · measured records

Coverage and RL distributions across recording intervals

The set view keeps stations and hydrophone arrays separate and preserves unavailable results.
217complete hydrophone product families
79complete hydrophone array families
28,890AIS arrival markers
5,101AIS records in the current waveform branch
Hydrophone percentile spectra93 / 217
Hydrophone array percentile spectra35 / 79
Anomaly targets181 / 337
Full complex spatial bundles63 / 79

RL distributions by station and hydrophone array

Each chart keeps one station, hydrophone array, and subject type separate. Intervals summarize the median spectrum from each observation on one shared scale.

HA01 station · H01W hydrophones

18 spectra
HA01 station · H01W hydrophones RL distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.608010010 Hz · median 85.5 dB · p10 to p90 81.8 to 86.8 dB12.5 Hz · median 84.2 dB · p10 to p90 80.7 to 86.0 dB16 Hz · median 86.6 dB · p10 to p90 84.3 to 88.0 dB20 Hz · median 87.2 dB · p10 to p90 85.6 to 89.2 dB25 Hz · median 85.9 dB · p10 to p90 85.4 to 88.1 dB31.5 Hz · median 79.2 dB · p10 to p90 78.4 to 80.4 dB40 Hz · median 77.4 dB · p10 to p90 75.7 to 78.1 dB50 Hz · median 76.0 dB · p10 to p90 75.6 to 76.4 dB63 Hz · median 74.9 dB · p10 to p90 74.3 to 76.5 dB80 Hz · median 73.3 dB · p10 to p90 72.1 to 75.8 dB100 Hz · median 70.7 dB · p10 to p90 69.4 to 72.8 dB10204063100Frequency (Hz)RL (dB re 1 µPa² / Hz)

HA01 station · H01W hydrophone array

6 spectra
HA01 station · H01W hydrophone array RL distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.608010010 Hz · median 85.4 dB · p10 to p90 82.2 to 86.7 dB12.5 Hz · median 84.1 dB · p10 to p90 81.1 to 86.0 dB16 Hz · median 86.6 dB · p10 to p90 85.1 to 87.8 dB20 Hz · median 87.2 dB · p10 to p90 85.9 to 88.9 dB25 Hz · median 86.0 dB · p10 to p90 85.3 to 88.1 dB31.5 Hz · median 79.3 dB · p10 to p90 78.7 to 80.4 dB40 Hz · median 77.4 dB · p10 to p90 75.8 to 77.9 dB50 Hz · median 76.0 dB · p10 to p90 75.8 to 76.2 dB63 Hz · median 74.8 dB · p10 to p90 74.4 to 76.2 dB80 Hz · median 73.3 dB · p10 to p90 72.2 to 74.9 dB100 Hz · median 70.7 dB · p10 to p90 69.6 to 72.1 dB10204063100Frequency (Hz)RL (dB re 1 µPa² / Hz)

HA03 station · H03N hydrophones

8 spectra
HA03 station · H03N hydrophones RL distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.608010010 Hz · median 75.4 dB · p10 to p90 74.7 to 77.3 dB12.5 Hz · median 74.9 dB · p10 to p90 74.3 to 76.4 dB16 Hz · median 89.0 dB · p10 to p90 85.7 to 89.8 dB20 Hz · median 85.8 dB · p10 to p90 82.5 to 86.6 dB25 Hz · median 82.6 dB · p10 to p90 79.7 to 83.3 dB31.5 Hz · median 74.0 dB · p10 to p90 72.6 to 76.7 dB40 Hz · median 74.5 dB · p10 to p90 73.6 to 78.2 dB50 Hz · median 76.0 dB · p10 to p90 73.5 to 76.8 dB63 Hz · median 75.2 dB · p10 to p90 74.2 to 75.9 dB80 Hz · median 73.8 dB · p10 to p90 72.5 to 74.5 dB100 Hz · median 72.4 dB · p10 to p90 68.8 to 74.2 dB10204063100Frequency (Hz)RL (dB re 1 µPa² / Hz)

HA03 station · H03N hydrophone array

4 spectra
HA03 station · H03N hydrophone array RL distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.608010010 Hz · median 75.4 dB · p10 to p90 74.7 to 76.9 dB12.5 Hz · median 75.4 dB · p10 to p90 74.5 to 76.2 dB16 Hz · median 89.1 dB · p10 to p90 86.7 to 89.7 dB20 Hz · median 85.7 dB · p10 to p90 83.4 to 86.5 dB25 Hz · median 82.8 dB · p10 to p90 80.5 to 83.4 dB31.5 Hz · median 74.0 dB · p10 to p90 72.9 to 76.2 dB40 Hz · median 74.5 dB · p10 to p90 73.8 to 77.1 dB50 Hz · median 76.1 dB · p10 to p90 74.0 to 76.7 dB63 Hz · median 75.5 dB · p10 to p90 74.4 to 75.9 dB80 Hz · median 73.7 dB · p10 to p90 72.6 to 74.3 dB100 Hz · median 72.6 dB · p10 to p90 69.7 to 74.1 dB10204063100Frequency (Hz)RL (dB re 1 µPa² / Hz)

HA03 station · H03S hydrophones

12 spectra
HA03 station · H03S hydrophones RL distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.608010010 Hz · median 78.8 dB · p10 to p90 78.2 to 81.8 dB12.5 Hz · median 79.3 dB · p10 to p90 77.6 to 82.1 dB16 Hz · median 86.5 dB · p10 to p90 86.1 to 87.4 dB20 Hz · median 83.6 dB · p10 to p90 82.7 to 84.3 dB25 Hz · median 81.0 dB · p10 to p90 80.6 to 81.7 dB31.5 Hz · median 76.1 dB · p10 to p90 74.9 to 76.6 dB40 Hz · median 76.3 dB · p10 to p90 73.3 to 81.4 dB50 Hz · median 76.6 dB · p10 to p90 74.1 to 77.8 dB63 Hz · median 75.2 dB · p10 to p90 74.0 to 76.5 dB80 Hz · median 74.1 dB · p10 to p90 73.0 to 76.4 dB100 Hz · median 73.4 dB · p10 to p90 70.0 to 74.5 dB10204063100Frequency (Hz)RL (dB re 1 µPa² / Hz)

HA03 station · H03S hydrophone array

4 spectra
HA03 station · H03S hydrophone array RL distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.608010010 Hz · median 78.7 dB · p10 to p90 78.2 to 80.9 dB12.5 Hz · median 79.4 dB · p10 to p90 77.9 to 81.5 dB16 Hz · median 86.7 dB · p10 to p90 86.1 to 87.2 dB20 Hz · median 83.5 dB · p10 to p90 82.9 to 83.7 dB25 Hz · median 81.0 dB · p10 to p90 80.7 to 81.5 dB31.5 Hz · median 76.0 dB · p10 to p90 75.1 to 76.7 dB40 Hz · median 76.3 dB · p10 to p90 74.2 to 80.1 dB50 Hz · median 76.8 dB · p10 to p90 74.8 to 77.5 dB63 Hz · median 75.2 dB · p10 to p90 74.0 to 76.4 dB80 Hz · median 74.0 dB · p10 to p90 73.2 to 75.8 dB100 Hz · median 73.3 dB · p10 to p90 70.9 to 74.3 dB10204063100Frequency (Hz)RL (dB re 1 µPa² / Hz)

HA08 station · H08S hydrophones

15 spectra
HA08 station · H08S hydrophones RL distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.608010010 Hz · median 88.7 dB · p10 to p90 79.0 to 95.6 dB12.5 Hz · median 86.9 dB · p10 to p90 75.8 to 93.8 dB16 Hz · median 85.6 dB · p10 to p90 77.1 to 91.5 dB20 Hz · median 84.2 dB · p10 to p90 77.8 to 89.5 dB25 Hz · median 81.2 dB · p10 to p90 77.6 to 87.5 dB31.5 Hz · median 78.8 dB · p10 to p90 77.4 to 80.8 dB40 Hz · median 77.4 dB · p10 to p90 76.3 to 78.8 dB50 Hz · median 77.0 dB · p10 to p90 75.7 to 78.7 dB63 Hz · median 76.0 dB · p10 to p90 74.9 to 77.1 dB80 Hz · median 72.7 dB · p10 to p90 70.9 to 74.4 dB100 Hz · median 68.6 dB · p10 to p90 67.3 to 70.5 dB10204063100Frequency (Hz)RL (dB re 1 µPa² / Hz)

HA08 station · H08S hydrophone array

5 spectra
HA08 station · H08S hydrophone array RL distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.608010010 Hz · median 90.3 dB · p10 to p90 83.1 to 93.6 dB12.5 Hz · median 88.4 dB · p10 to p90 80.6 to 91.7 dB16 Hz · median 86.7 dB · p10 to p90 80.6 to 89.5 dB20 Hz · median 84.8 dB · p10 to p90 80.3 to 87.5 dB25 Hz · median 82.2 dB · p10 to p90 79.2 to 85.7 dB31.5 Hz · median 79.6 dB · p10 to p90 77.7 to 80.0 dB40 Hz · median 77.5 dB · p10 to p90 77.0 to 78.3 dB50 Hz · median 77.4 dB · p10 to p90 76.5 to 77.8 dB63 Hz · median 75.8 dB · p10 to p90 75.7 to 76.8 dB80 Hz · median 73.1 dB · p10 to p90 71.5 to 73.6 dB100 Hz · median 68.9 dB · p10 to p90 68.0 to 70.1 dB10204063100Frequency (Hz)RL (dB re 1 µPa² / Hz)

HA10 station · H10N hydrophones

24 spectra
HA10 station · H10N hydrophones RL distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.608010010 Hz · median 79.5 dB · p10 to p90 76.4 to 87.4 dB12.5 Hz · median 78.7 dB · p10 to p90 75.3 to 84.4 dB16 Hz · median 81.8 dB · p10 to p90 80.4 to 85.4 dB20 Hz · median 81.7 dB · p10 to p90 79.9 to 84.0 dB25 Hz · median 80.1 dB · p10 to p90 79.0 to 83.5 dB31.5 Hz · median 76.7 dB · p10 to p90 75.3 to 83.5 dB40 Hz · median 77.5 dB · p10 to p90 76.0 to 81.5 dB50 Hz · median 78.0 dB · p10 to p90 77.1 to 81.0 dB63 Hz · median 76.7 dB · p10 to p90 75.8 to 79.3 dB80 Hz · median 73.4 dB · p10 to p90 72.0 to 75.6 dB100 Hz · median 68.6 dB · p10 to p90 67.9 to 72.0 dB10204063100Frequency (Hz)RL (dB re 1 µPa² / Hz)

HA10 station · H10N hydrophone array

8 spectra
HA10 station · H10N hydrophone array RL distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.608010010 Hz · median 79.9 dB · p10 to p90 77.4 to 85.8 dB12.5 Hz · median 78.7 dB · p10 to p90 75.8 to 84.4 dB16 Hz · median 81.8 dB · p10 to p90 80.9 to 84.4 dB20 Hz · median 81.7 dB · p10 to p90 80.3 to 83.5 dB25 Hz · median 80.1 dB · p10 to p90 79.1 to 82.8 dB31.5 Hz · median 76.8 dB · p10 to p90 75.6 to 82.2 dB40 Hz · median 77.3 dB · p10 to p90 76.1 to 80.4 dB50 Hz · median 78.3 dB · p10 to p90 77.2 to 79.9 dB63 Hz · median 76.8 dB · p10 to p90 76.0 to 79.1 dB80 Hz · median 73.2 dB · p10 to p90 72.0 to 74.7 dB100 Hz · median 68.7 dB · p10 to p90 68.1 to 70.9 dB10204063100Frequency (Hz)RL (dB re 1 µPa² / Hz)

HA10 station · H10S hydrophones

16 spectra
HA10 station · H10S hydrophones RL distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.608010010 Hz · median 82.9 dB · p10 to p90 80.8 to 87.8 dB12.5 Hz · median 81.7 dB · p10 to p90 79.8 to 86.7 dB16 Hz · median 85.1 dB · p10 to p90 82.6 to 87.0 dB20 Hz · median 85.1 dB · p10 to p90 83.7 to 87.9 dB25 Hz · median 84.1 dB · p10 to p90 82.3 to 86.5 dB31.5 Hz · median 78.8 dB · p10 to p90 76.7 to 83.9 dB40 Hz · median 79.1 dB · p10 to p90 77.0 to 82.7 dB50 Hz · median 78.8 dB · p10 to p90 77.6 to 81.8 dB63 Hz · median 78.0 dB · p10 to p90 76.8 to 82.2 dB80 Hz · median 73.9 dB · p10 to p90 73.2 to 81.8 dB100 Hz · median 71.0 dB · p10 to p90 69.1 to 77.2 dB10204063100Frequency (Hz)RL (dB re 1 µPa² / Hz)

HA10 station · H10S hydrophone array

8 spectra
HA10 station · H10S hydrophone array RL distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.608010010 Hz · median 82.9 dB · p10 to p90 80.9 to 87.3 dB12.5 Hz · median 81.7 dB · p10 to p90 79.9 to 86.8 dB16 Hz · median 85.4 dB · p10 to p90 82.8 to 87.0 dB20 Hz · median 85.3 dB · p10 to p90 83.8 to 88.1 dB25 Hz · median 83.9 dB · p10 to p90 82.5 to 86.6 dB31.5 Hz · median 78.8 dB · p10 to p90 76.6 to 83.4 dB40 Hz · median 79.1 dB · p10 to p90 77.3 to 82.1 dB50 Hz · median 79.0 dB · p10 to p90 77.7 to 81.3 dB63 Hz · median 78.0 dB · p10 to p90 77.0 to 81.8 dB80 Hz · median 73.9 dB · p10 to p90 73.2 to 81.2 dB100 Hz · median 71.1 dB · p10 to p90 69.1 to 76.3 dB10204063100Frequency (Hz)RL (dB re 1 µPa² / Hz)

Standardized anomalies across available targets

These are descriptive departures from each target's declared 3+1 background. Windows of one hour advance every 15 minutes, so they overlap. One fulfilled target has no numerical values and remains counted as available but not plotted.

Values & coverage
StationSubjectAvailablePlottedWaiting
HA01Hydrophone595937
HA01Hydrophone array201912
HA03Hydrophone242424
HA03Hydrophone array888
HA08Hydrophone0042
HA08Hydrophone array007
HA10Hydrophone505022
HA10Hydrophone array20204

HA01 station · H01W hydrophones

59 plotted of 59 available targets
HA01 station · H01W hydrophones standardized anomaly distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.-551510 Hz · median -0.6 dB · p10 to p90 -2.4 to 1.6 dB12.5 Hz · median -0.4 dB · p10 to p90 -2.3 to 1.8 dB16 Hz · median -0.2 dB · p10 to p90 -1.8 to 1.5 dB20 Hz · median -0.0 dB · p10 to p90 -1.7 to 2.1 dB25 Hz · median -0.3 dB · p10 to p90 -1.8 to 4.1 dB31.5 Hz · median -0.2 dB · p10 to p90 -1.4 to 6.7 dB40 Hz · median -0.2 dB · p10 to p90 -1.6 to 10.2 dB50 Hz · median -0.1 dB · p10 to p90 -1.3 to 9.5 dB63 Hz · median 0.3 dB · p10 to p90 -1.1 to 10.1 dB80 Hz · median 0.0 dB · p10 to p90 -0.8 to 5.7 dB100 Hz · median -0.1 dB · p10 to p90 -1.7 to 5.0 dB10204063100Frequency (Hz)Standardized anomaly (z)

HA10 station · H10N hydrophones

30 plotted of 30 available targets
HA10 station · H10N hydrophones standardized anomaly distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.-551510 Hz · median 0.1 dB · p10 to p90 -1.1 to 1.5 dB12.5 Hz · median 0.4 dB · p10 to p90 -0.8 to 1.8 dB16 Hz · median 0.1 dB · p10 to p90 -1.2 to 0.8 dB20 Hz · median 0.0 dB · p10 to p90 -1.1 to 0.6 dB25 Hz · median 0.3 dB · p10 to p90 -1.0 to 0.8 dB31.5 Hz · median 0.3 dB · p10 to p90 -0.2 to 0.7 dB40 Hz · median 0.2 dB · p10 to p90 -0.6 to 0.7 dB50 Hz · median 0.1 dB · p10 to p90 -0.7 to 0.9 dB63 Hz · median -0.3 dB · p10 to p90 -0.7 to 1.2 dB80 Hz · median 0.2 dB · p10 to p90 -0.6 to 1.6 dB100 Hz · median -1.1 dB · p10 to p90 -2.2 to 1.2 dB10204063100Frequency (Hz)Standardized anomaly (z)

HA10 station · H10S hydrophones

20 plotted of 20 available targets
HA10 station · H10S hydrophones standardized anomaly distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.-551510 Hz · median -0.1 dB · p10 to p90 -0.7 to 0.5 dB12.5 Hz · median -0.2 dB · p10 to p90 -0.6 to 0.2 dB16 Hz · median 0.1 dB · p10 to p90 -1.0 to 0.7 dB20 Hz · median 0.1 dB · p10 to p90 -0.8 to 1.2 dB25 Hz · median 0.5 dB · p10 to p90 -1.1 to 1.5 dB31.5 Hz · median 0.3 dB · p10 to p90 -0.8 to 1.2 dB40 Hz · median -0.1 dB · p10 to p90 -1.1 to 1.4 dB50 Hz · median -0.2 dB · p10 to p90 -1.2 to 2.1 dB63 Hz · median -0.6 dB · p10 to p90 -1.3 to 2.8 dB80 Hz · median -0.3 dB · p10 to p90 -1.8 to 4.0 dB100 Hz · median -0.9 dB · p10 to p90 -2.6 to 4.3 dB10204063100Frequency (Hz)Standardized anomaly (z)

HA03 station · H03S hydrophones

24 plotted of 24 available targets
HA03 station · H03S hydrophones standardized anomaly distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.-551510 Hz · median -2.1 dB · p10 to p90 -2.8 to 0.6 dB12.5 Hz · median -1.1 dB · p10 to p90 -1.7 to 0.5 dB16 Hz · median 0.7 dB · p10 to p90 -0.6 to 3.5 dB20 Hz · median 0.7 dB · p10 to p90 -0.3 to 3.1 dB25 Hz · median 0.1 dB · p10 to p90 -0.6 to 1.8 dB31.5 Hz · median -0.5 dB · p10 to p90 -1.9 to 1.0 dB40 Hz · median -0.5 dB · p10 to p90 -1.8 to 0.1 dB50 Hz · median 0.0 dB · p10 to p90 -1.5 to 0.8 dB63 Hz · median -0.0 dB · p10 to p90 -1.7 to 0.6 dB80 Hz · median 0.4 dB · p10 to p90 -1.8 to 0.9 dB100 Hz · median -1.0 dB · p10 to p90 -2.9 to 0.7 dB10204063100Frequency (Hz)Standardized anomaly (z)

HA01 station · H01W hydrophone array

19 plotted of 20 available targets
HA01 station · H01W hydrophone array standardized anomaly distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.-551510 Hz · median -0.5 dB · p10 to p90 -2.0 to 1.5 dB12.5 Hz · median -0.1 dB · p10 to p90 -1.7 to 1.9 dB16 Hz · median -0.1 dB · p10 to p90 -1.6 to 1.5 dB20 Hz · median 0.1 dB · p10 to p90 -1.7 to 2.1 dB25 Hz · median -0.2 dB · p10 to p90 -1.8 to 3.7 dB31.5 Hz · median 0.3 dB · p10 to p90 -1.4 to 6.6 dB40 Hz · median 0.3 dB · p10 to p90 -1.8 to 10.0 dB50 Hz · median 1.0 dB · p10 to p90 -1.2 to 9.1 dB63 Hz · median 1.1 dB · p10 to p90 -0.9 to 10.0 dB80 Hz · median 1.4 dB · p10 to p90 -0.7 to 6.4 dB100 Hz · median 0.6 dB · p10 to p90 -1.7 to 5.0 dB10204063100Frequency (Hz)Standardized anomaly (z)

HA10 station · H10N hydrophone array

10 plotted of 10 available targets
HA10 station · H10N hydrophone array standardized anomaly distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.-551510 Hz · median 0.3 dB · p10 to p90 -0.8 to 2.3 dB12.5 Hz · median 0.4 dB · p10 to p90 -0.2 to 2.1 dB16 Hz · median 0.1 dB · p10 to p90 -1.0 to 0.8 dB20 Hz · median 0.2 dB · p10 to p90 -1.0 to 0.8 dB25 Hz · median 0.3 dB · p10 to p90 -0.9 to 0.9 dB31.5 Hz · median 0.3 dB · p10 to p90 -0.1 to 0.7 dB40 Hz · median 0.1 dB · p10 to p90 -0.4 to 0.6 dB50 Hz · median -0.0 dB · p10 to p90 -0.6 to 0.7 dB63 Hz · median -0.0 dB · p10 to p90 -0.7 to 0.8 dB80 Hz · median 0.3 dB · p10 to p90 -0.6 to 2.0 dB100 Hz · median -1.0 dB · p10 to p90 -2.1 to 1.7 dB10204063100Frequency (Hz)Standardized anomaly (z)

HA10 station · H10S hydrophone array

10 plotted of 10 available targets
HA10 station · H10S hydrophone array standardized anomaly distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.-551510 Hz · median -0.1 dB · p10 to p90 -0.6 to 0.4 dB12.5 Hz · median -0.3 dB · p10 to p90 -0.5 to 0.2 dB16 Hz · median 0.0 dB · p10 to p90 -1.0 to 0.9 dB20 Hz · median 0.1 dB · p10 to p90 -0.8 to 1.4 dB25 Hz · median 0.5 dB · p10 to p90 -1.1 to 1.6 dB31.5 Hz · median 0.3 dB · p10 to p90 -0.8 to 1.2 dB40 Hz · median -0.1 dB · p10 to p90 -1.1 to 1.1 dB50 Hz · median -0.3 dB · p10 to p90 -1.1 to 1.8 dB63 Hz · median -0.6 dB · p10 to p90 -1.3 to 2.4 dB80 Hz · median -0.2 dB · p10 to p90 -1.8 to 4.0 dB100 Hz · median -0.9 dB · p10 to p90 -2.5 to 4.3 dB10204063100Frequency (Hz)Standardized anomaly (z)

HA03 station · H03S hydrophone array

8 plotted of 8 available targets
HA03 station · H03S hydrophone array standardized anomaly distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.-551510 Hz · median -2.2 dB · p10 to p90 -2.9 to 0.5 dB12.5 Hz · median -1.1 dB · p10 to p90 -1.6 to 0.5 dB16 Hz · median 0.8 dB · p10 to p90 -0.4 to 2.3 dB20 Hz · median 0.7 dB · p10 to p90 -0.2 to 2.7 dB25 Hz · median 0.1 dB · p10 to p90 -0.6 to 1.4 dB31.5 Hz · median -0.5 dB · p10 to p90 -1.9 to 1.2 dB40 Hz · median -0.5 dB · p10 to p90 -1.7 to 0.0 dB50 Hz · median -0.0 dB · p10 to p90 -1.3 to 0.8 dB63 Hz · median -0.0 dB · p10 to p90 -1.4 to 0.5 dB80 Hz · median 0.4 dB · p10 to p90 -1.6 to 0.9 dB100 Hz · median -1.1 dB · p10 to p90 -2.8 to 0.3 dB10204063100Frequency (Hz)Standardized anomaly (z)

Spatial statistics by hydrophone array

H01W32 observations

32 full complex

Values & coverage
HzCoherenceCoherent energyClosure
630.030.481.18
800.030.461.31
Median across observations. Closure applies only to complete triplets.
H03N8 observations

8 magnitude only

Values & coverage
HzCoherenceCoherent energyClosure
630.030.61not available
800.020.61not available
Median across observations. Closure applies only to complete triplets.
H03S8 observations

8 magnitude only

Values & coverage
HzCoherenceCoherent energyClosure
630.030.75not available
800.020.74not available
Median across observations. Closure applies only to complete triplets.
H08S7 observations

7 full complex

Values & coverage
HzCoherenceCoherent energyClosure
630.030.471.18
800.030.481.25
Median across observations. Closure applies only to complete triplets.
H10N12 observations

12 full complex

Values & coverage
HzCoherenceCoherent energyClosure
630.030.461.24
800.030.461.19
Median across observations. Closure applies only to complete triplets.
H10S12 observations

12 full complex

Values & coverage
HzCoherenceCoherent energyClosure
630.030.62not available
800.020.60not available
Median across observations. Closure applies only to complete triplets.
Technical details

FFT frequencies: nominal decidecade centres use the nearest available bins: 10 → 10.0098 Hz · 12.5 → 12.5122 Hz · 16 → 15.9912 Hz · 20 → 19.989 Hz · 25 → 24.9939 Hz · 31.5 → 31.4941 Hz · 40 → 40.0085 Hz · 50 → 49.9878 Hz · 63 → 62.9883 Hz · 80 → 79.9866 Hz · 100 → 99.9756 Hz.

Comparison · observations

Measured whole soundscape beside modeled vessel contribution

This is a descriptive comparison of scale and spectral shape, not background subtraction or attribution.

21 observations across 20 distinct measured windows of one hour.

Measured and modeled distributions

5077.510510204063100Frequency (Hz)RL (dB re 1 µPa² / Hz)
Measured whole soundscapeModeled contribution from one vessel

Measured minus modeled

Fixed 6 m measured minus modeled residual distributionEach vertical interval belongs to one band. The pale interval is the tenth to ninetieth percentile range, the darker interval is the interquartile range, and the circle is the median. Dotted segments only connect discrete medians.-4504510 Hz · median 22.1 dB · p10 to p90 13.4 to 32.7 dB12.5 Hz · median 24.0 dB · p10 to p90 14.5 to 31.4 dB16 Hz · median 18.0 dB · p10 to p90 7.8 to 28.5 dB20 Hz · median 17.2 dB · p10 to p90 11.2 to 29.5 dB25 Hz · median 12.9 dB · p10 to p90 4.9 to 21.9 dB31.5 Hz · median 7.9 dB · p10 to p90 5.3 to 16.5 dB40 Hz · median 4.8 dB · p10 to p90 -4.7 to 17.2 dB50 Hz · median 2.6 dB · p10 to p90 -3.5 to 13.1 dB63 Hz · median 1.1 dB · p10 to p90 -8.8 to 11.7 dB80 Hz · median 2.5 dB · p10 to p90 -4.2 to 10.2 dB100 Hz · median -4.8 dB · p10 to p90 -10.7 to 1.6 dB10204063100Frequency (Hz)Residual (dB)

The residual is descriptive. It is not a background subtraction or evidence of attribution.

Every observation

1012.516202531.540506380100Bulker · 2025 April 14 · 00:50 UTCBulker · 2025 April 14 · 00:50 UTC, 10 hertz, measured minus modeled 34.2 decibelsBulker · 2025 April 14 · 00:50 UTC, 12.5 hertz, measured minus modeled 24.0 decibelsBulker · 2025 April 14 · 00:50 UTC, 16 hertz, measured minus modeled 21.7 decibelsBulker · 2025 April 14 · 00:50 UTC, 20 hertz, measured minus modeled 28.4 decibelsBulker · 2025 April 14 · 00:50 UTC, 25 hertz, measured minus modeled 25.3 decibelsBulker · 2025 April 14 · 00:50 UTC, 31.5 hertz, measured minus modeled 11.9 decibelsBulker · 2025 April 14 · 00:50 UTC, 40 hertz, measured minus modeled 7.6 decibelsBulker · 2025 April 14 · 00:50 UTC, 50 hertz, measured minus modeled 2.6 decibelsBulker · 2025 April 14 · 00:50 UTC, 63 hertz, measured minus modeled 6.7 decibelsBulker · 2025 April 14 · 00:50 UTC, 80 hertz, measured minus modeled 7.5 decibelsBulker · 2025 April 14 · 00:50 UTC, 100 hertz, measured minus modeled -8.0 decibelsBulker · 2025 April 14 · 01:52 UTCBulker · 2025 April 14 · 01:52 UTC, 10 hertz, measured minus modeled 31.1 decibelsBulker · 2025 April 14 · 01:52 UTC, 12.5 hertz, measured minus modeled 26.4 decibelsBulker · 2025 April 14 · 01:52 UTC, 16 hertz, measured minus modeled 11.7 decibelsBulker · 2025 April 14 · 01:52 UTC, 20 hertz, measured minus modeled 15.5 decibelsBulker · 2025 April 14 · 01:52 UTC, 25 hertz, measured minus modeled 11.4 decibelsBulker · 2025 April 14 · 01:52 UTC, 31.5 hertz, measured minus modeled 5.1 decibelsBulker · 2025 April 14 · 01:52 UTC, 40 hertz, measured minus modeled 0.1 decibelsBulker · 2025 April 14 · 01:52 UTC, 50 hertz, measured minus modeled 0.0 decibelsBulker · 2025 April 14 · 01:52 UTC, 63 hertz, measured minus modeled -7.5 decibelsBulker · 2025 April 14 · 01:52 UTC, 80 hertz, measured minus modeled -5.0 decibelsBulker · 2025 April 14 · 01:52 UTC, 100 hertz, measured minus modeled -10.8 decibelsBulker · 2025 December 14 · 14:54 UTCBulker · 2025 December 14 · 14:54 UTC, 10 hertz, measured minus modeled 30.8 decibelsBulker · 2025 December 14 · 14:54 UTC, 12.5 hertz, measured minus modeled 29.9 decibelsBulker · 2025 December 14 · 14:54 UTC, 16 hertz, measured minus modeled 37.4 decibelsBulker · 2025 December 14 · 14:54 UTC, 20 hertz, measured minus modeled 15.4 decibelsBulker · 2025 December 14 · 14:54 UTC, 25 hertz, measured minus modeled 12.9 decibelsBulker · 2025 December 14 · 14:54 UTC, 31.5 hertz, measured minus modeled 6.0 decibelsBulker · 2025 December 14 · 14:54 UTC, 40 hertz, measured minus modeled 13.3 decibelsBulker · 2025 December 14 · 14:54 UTC, 50 hertz, measured minus modeled 8.4 decibelsBulker · 2025 December 14 · 14:54 UTC, 63 hertz, measured minus modeled 1.1 decibelsBulker · 2025 December 14 · 14:54 UTC, 80 hertz, measured minus modeled 2.0 decibelsBulker · 2025 December 14 · 14:54 UTC, 100 hertz, measured minus modeled 1.6 decibelsBulker · 2025 January 12 · 03:14 UTCBulker · 2025 January 12 · 03:14 UTC, 10 hertz, measured minus modeled 31.6 decibelsBulker · 2025 January 12 · 03:14 UTC, 12.5 hertz, measured minus modeled 26.0 decibelsBulker · 2025 January 12 · 03:14 UTC, 16 hertz, measured minus modeled 14.8 decibelsBulker · 2025 January 12 · 03:14 UTC, 20 hertz, measured minus modeled 42.9 decibelsBulker · 2025 January 12 · 03:14 UTC, 25 hertz, measured minus modeled 11.5 decibelsBulker · 2025 January 12 · 03:14 UTC, 31.5 hertz, measured minus modeled 11.8 decibelsBulker · 2025 January 12 · 03:14 UTC, 40 hertz, measured minus modeled 9.1 decibelsBulker · 2025 January 12 · 03:14 UTC, 50 hertz, measured minus modeled 7.7 decibelsBulker · 2025 January 12 · 03:14 UTC, 63 hertz, measured minus modeled 5.1 decibelsBulker · 2025 January 12 · 03:14 UTC, 80 hertz, measured minus modeled 6.2 decibelsBulker · 2025 January 12 · 03:14 UTC, 100 hertz, measured minus modeled -4.3 decibelsBulker · 2025 July 15 · 02:34 UTCBulker · 2025 July 15 · 02:34 UTC, 10 hertz, measured minus modeled 23.8 decibelsBulker · 2025 July 15 · 02:34 UTC, 12.5 hertz, measured minus modeled 17.6 decibelsBulker · 2025 July 15 · 02:34 UTC, 16 hertz, measured minus modeled 28.5 decibelsBulker · 2025 July 15 · 02:34 UTC, 20 hertz, measured minus modeled 19.1 decibelsBulker · 2025 July 15 · 02:34 UTC, 25 hertz, measured minus modeled 13.0 decibelsBulker · 2025 July 15 · 02:34 UTC, 31.5 hertz, measured minus modeled 12.2 decibelsBulker · 2025 July 15 · 02:34 UTC, 40 hertz, measured minus modeled 0.5 decibelsBulker · 2025 July 15 · 02:34 UTC, 50 hertz, measured minus modeled 1.3 decibelsBulker · 2025 July 15 · 02:34 UTC, 63 hertz, measured minus modeled 2.1 decibelsBulker · 2025 July 15 · 02:34 UTC, 80 hertz, measured minus modeled -1.2 decibelsBulker · 2025 July 15 · 02:34 UTC, 100 hertz, measured minus modeled -10.2 decibelsBulker · 2025 June 17 · 18:18 UTCBulker · 2025 June 17 · 18:18 UTC, 10 hertz, measured minus modeled 18.0 decibelsBulker · 2025 June 17 · 18:18 UTC, 12.5 hertz, measured minus modeled 21.7 decibelsBulker · 2025 June 17 · 18:18 UTC, 16 hertz, measured minus modeled 5.2 decibelsBulker · 2025 June 17 · 18:18 UTC, 20 hertz, measured minus modeled 14.7 decibelsBulker · 2025 June 17 · 18:18 UTC, 25 hertz, measured minus modeled 12.8 decibelsBulker · 2025 June 17 · 18:18 UTC, 31.5 hertz, measured minus modeled 17.4 decibelsBulker · 2025 June 17 · 18:18 UTC, 40 hertz, measured minus modeled 12.5 decibelsBulker · 2025 June 17 · 18:18 UTC, 50 hertz, measured minus modeled -3.5 decibelsBulker · 2025 June 17 · 18:18 UTC, 63 hertz, measured minus modeled -9.7 decibelsBulker · 2025 June 17 · 18:18 UTC, 80 hertz, measured minus modeled -4.2 decibelsBulker · 2025 June 17 · 18:18 UTC, 100 hertz, measured minus modeled -15.0 decibelsBulker · 2025 June 28 · 17:24 UTCBulker · 2025 June 28 · 17:24 UTC, 10 hertz, measured minus modeled 21.3 decibelsBulker · 2025 June 28 · 17:24 UTC, 12.5 hertz, measured minus modeled 29.5 decibelsBulker · 2025 June 28 · 17:24 UTC, 16 hertz, measured minus modeled 20.3 decibelsBulker · 2025 June 28 · 17:24 UTC, 20 hertz, measured minus modeled 24.3 decibelsBulker · 2025 June 28 · 17:24 UTC, 25 hertz, measured minus modeled 24.0 decibelsBulker · 2025 June 28 · 17:24 UTC, 31.5 hertz, measured minus modeled 6.2 decibelsBulker · 2025 June 28 · 17:24 UTC, 40 hertz, measured minus modeled 4.8 decibelsBulker · 2025 June 28 · 17:24 UTC, 50 hertz, measured minus modeled 14.5 decibelsBulker · 2025 June 28 · 17:24 UTC, 63 hertz, measured minus modeled -0.5 decibelsBulker · 2025 June 28 · 17:24 UTC, 80 hertz, measured minus modeled 10.6 decibelsBulker · 2025 June 28 · 17:24 UTC, 100 hertz, measured minus modeled 0.1 decibelsBulker · 2025 October 1 · 21:39 UTCBulker · 2025 October 1 · 21:39 UTC, 10 hertz, measured minus modeled 24.9 decibelsBulker · 2025 October 1 · 21:39 UTC, 12.5 hertz, measured minus modeled 31.4 decibelsBulker · 2025 October 1 · 21:39 UTC, 16 hertz, measured minus modeled 18.0 decibelsBulker · 2025 October 1 · 21:39 UTC, 20 hertz, measured minus modeled 17.2 decibelsBulker · 2025 October 1 · 21:39 UTC, 25 hertz, measured minus modeled 13.2 decibelsBulker · 2025 October 1 · 21:39 UTC, 31.5 hertz, measured minus modeled 36.8 decibelsBulker · 2025 October 1 · 21:39 UTC, 40 hertz, measured minus modeled 18.9 decibelsBulker · 2025 October 1 · 21:39 UTC, 50 hertz, measured minus modeled 28.6 decibelsBulker · 2025 October 1 · 21:39 UTC, 63 hertz, measured minus modeled -3.3 decibelsBulker · 2025 October 1 · 21:39 UTC, 80 hertz, measured minus modeled 4.0 decibelsBulker · 2025 October 1 · 21:39 UTC, 100 hertz, measured minus modeled -1.6 decibelsBulker · 2025 October 17 · 05:10 UTCBulker · 2025 October 17 · 05:10 UTC, 10 hertz, measured minus modeled 34.2 decibelsBulker · 2025 October 17 · 05:10 UTC, 12.5 hertz, measured minus modeled 20.0 decibelsBulker · 2025 October 17 · 05:10 UTC, 16 hertz, measured minus modeled 8.7 decibelsBulker · 2025 October 17 · 05:10 UTC, 20 hertz, measured minus modeled 6.4 decibelsBulker · 2025 October 17 · 05:10 UTC, 25 hertz, measured minus modeled 11.8 decibelsBulker · 2025 October 17 · 05:10 UTC, 31.5 hertz, measured minus modeled 7.9 decibelsBulker · 2025 October 17 · 05:10 UTC, 40 hertz, measured minus modeled -4.9 decibelsBulker · 2025 October 17 · 05:10 UTC, 50 hertz, measured minus modeled 1.9 decibelsBulker · 2025 October 17 · 05:10 UTC, 63 hertz, measured minus modeled -2.6 decibelsBulker · 2025 October 17 · 05:10 UTC, 80 hertz, measured minus modeled -9.1 decibelsBulker · 2025 October 17 · 05:10 UTC, 100 hertz, measured minus modeled -7.9 decibelsBulker · 2025 October 25 · 15:21 UTCBulker · 2025 October 25 · 15:21 UTC, 10 hertz, measured minus modeled 18.4 decibelsBulker · 2025 October 25 · 15:21 UTC, 12.5 hertz, measured minus modeled 10.2 decibelsBulker · 2025 October 25 · 15:21 UTC, 16 hertz, measured minus modeled 12.8 decibelsBulker · 2025 October 25 · 15:21 UTC, 20 hertz, measured minus modeled 11.2 decibelsBulker · 2025 October 25 · 15:21 UTC, 25 hertz, measured minus modeled 13.6 decibelsBulker · 2025 October 25 · 15:21 UTC, 31.5 hertz, measured minus modeled -2.8 decibelsBulker · 2025 October 25 · 15:21 UTC, 40 hertz, measured minus modeled -9.3 decibelsBulker · 2025 October 25 · 15:21 UTC, 50 hertz, measured minus modeled -4.3 decibelsBulker · 2025 October 25 · 15:21 UTC, 63 hertz, measured minus modeled -9.5 decibelsBulker · 2025 October 25 · 15:21 UTC, 80 hertz, measured minus modeled 2.5 decibelsBulker · 2025 October 25 · 15:21 UTC, 100 hertz, measured minus modeled -7.8 decibelsBulker · 2025 October 4 · 14:50 UTCBulker · 2025 October 4 · 14:50 UTC, 10 hertz, measured minus modeled 11.4 decibelsBulker · 2025 October 4 · 14:50 UTC, 12.5 hertz, measured minus modeled 43.5 decibelsBulker · 2025 October 4 · 14:50 UTC, 16 hertz, measured minus modeled 14.7 decibelsBulker · 2025 October 4 · 14:50 UTC, 20 hertz, measured minus modeled 3.4 decibelsBulker · 2025 October 4 · 14:50 UTC, 25 hertz, measured minus modeled 4.3 decibelsBulker · 2025 October 4 · 14:50 UTC, 31.5 hertz, measured minus modeled 6.8 decibelsBulker · 2025 October 4 · 14:50 UTC, 40 hertz, measured minus modeled -3.0 decibelsBulker · 2025 October 4 · 14:50 UTC, 50 hertz, measured minus modeled -4.1 decibelsBulker · 2025 October 4 · 14:50 UTC, 63 hertz, measured minus modeled -8.8 decibelsBulker · 2025 October 4 · 14:50 UTC, 80 hertz, measured minus modeled 8.4 decibelsBulker · 2025 October 4 · 14:50 UTC, 100 hertz, measured minus modeled -5.9 decibelsBulker · 2025 October 4 · 15:54 UTCBulker · 2025 October 4 · 15:54 UTC, 10 hertz, measured minus modeled 15.7 decibelsBulker · 2025 October 4 · 15:54 UTC, 12.5 hertz, measured minus modeled 16.1 decibelsBulker · 2025 October 4 · 15:54 UTC, 16 hertz, measured minus modeled 5.3 decibelsBulker · 2025 October 4 · 15:54 UTC, 20 hertz, measured minus modeled 15.0 decibelsBulker · 2025 October 4 · 15:54 UTC, 25 hertz, measured minus modeled 5.5 decibelsBulker · 2025 October 4 · 15:54 UTC, 31.5 hertz, measured minus modeled 5.3 decibelsBulker · 2025 October 4 · 15:54 UTC, 40 hertz, measured minus modeled -4.7 decibelsBulker · 2025 October 4 · 15:54 UTC, 50 hertz, measured minus modeled 0.6 decibelsBulker · 2025 October 4 · 15:54 UTC, 63 hertz, measured minus modeled -2.8 decibelsBulker · 2025 October 4 · 15:54 UTC, 80 hertz, measured minus modeled -1.2 decibelsBulker · 2025 October 4 · 15:54 UTC, 100 hertz, measured minus modeled -8.3 decibelsBulker · 2026 July 13 · 11:04 UTCBulker · 2026 July 13 · 11:04 UTC, 10 hertz, measured minus modeled 14.2 decibelsBulker · 2026 July 13 · 11:04 UTC, 12.5 hertz, measured minus modeled 14.3 decibelsBulker · 2026 July 13 · 11:04 UTC, 16 hertz, measured minus modeled 14.7 decibelsBulker · 2026 July 13 · 11:04 UTC, 20 hertz, measured minus modeled 22.6 decibelsBulker · 2026 July 13 · 11:04 UTC, 25 hertz, measured minus modeled 12.7 decibelsBulker · 2026 July 13 · 11:04 UTC, 31.5 hertz, measured minus modeled 7.9 decibelsBulker · 2026 July 13 · 11:04 UTC, 40 hertz, measured minus modeled 3.4 decibelsBulker · 2026 July 13 · 11:04 UTC, 50 hertz, measured minus modeled -2.8 decibelsBulker · 2026 July 13 · 11:04 UTC, 63 hertz, measured minus modeled -2.7 decibelsBulker · 2026 July 13 · 11:04 UTC, 80 hertz, measured minus modeled 1.6 decibelsBulker · 2026 July 13 · 11:04 UTC, 100 hertz, measured minus modeled -3.2 decibelsBulker · 2026 July 9 · 04:27 UTCBulker · 2026 July 9 · 04:27 UTC, 10 hertz, measured minus modeled 32.0 decibelsBulker · 2026 July 9 · 04:27 UTC, 12.5 hertz, measured minus modeled 35.6 decibelsBulker · 2026 July 9 · 04:27 UTC, 16 hertz, measured minus modeled 26.6 decibelsBulker · 2026 July 9 · 04:27 UTC, 20 hertz, measured minus modeled 17.4 decibelsBulker · 2026 July 9 · 04:27 UTC, 25 hertz, measured minus modeled 19.1 decibelsBulker · 2026 July 9 · 04:27 UTC, 31.5 hertz, measured minus modeled 13.8 decibelsBulker · 2026 July 9 · 04:27 UTC, 40 hertz, measured minus modeled 5.8 decibelsBulker · 2026 July 9 · 04:27 UTC, 50 hertz, measured minus modeled 4.1 decibelsBulker · 2026 July 9 · 04:27 UTC, 63 hertz, measured minus modeled 6.3 decibelsBulker · 2026 July 9 · 04:27 UTC, 80 hertz, measured minus modeled 1.1 decibelsBulker · 2026 July 9 · 04:27 UTC, 100 hertz, measured minus modeled 0.1 decibelsBulker · 2026 July 9 · 05:04 UTCBulker · 2026 July 9 · 05:04 UTC, 10 hertz, measured minus modeled 18.3 decibelsBulker · 2026 July 9 · 05:04 UTC, 12.5 hertz, measured minus modeled 17.4 decibelsBulker · 2026 July 9 · 05:04 UTC, 16 hertz, measured minus modeled 26.9 decibelsBulker · 2026 July 9 · 05:04 UTC, 20 hertz, measured minus modeled 40.4 decibelsBulker · 2026 July 9 · 05:04 UTC, 25 hertz, measured minus modeled 12.4 decibelsBulker · 2026 July 9 · 05:04 UTC, 31.5 hertz, measured minus modeled 12.6 decibelsBulker · 2026 July 9 · 05:04 UTC, 40 hertz, measured minus modeled 4.7 decibelsBulker · 2026 July 9 · 05:04 UTC, 50 hertz, measured minus modeled 9.9 decibelsBulker · 2026 July 9 · 05:04 UTC, 63 hertz, measured minus modeled 1.6 decibelsBulker · 2026 July 9 · 05:04 UTC, 80 hertz, measured minus modeled 7.0 decibelsBulker · 2026 July 9 · 05:04 UTC, 100 hertz, measured minus modeled 6.0 decibelsBulker · 2026 July 9 · 07:14 UTCBulker · 2026 July 9 · 07:14 UTC, 10 hertz, measured minus modeled 19.4 decibelsBulker · 2026 July 9 · 07:14 UTC, 12.5 hertz, measured minus modeled 17.7 decibelsBulker · 2026 July 9 · 07:14 UTC, 16 hertz, measured minus modeled 19.1 decibelsBulker · 2026 July 9 · 07:14 UTC, 20 hertz, measured minus modeled 11.8 decibelsBulker · 2026 July 9 · 07:14 UTC, 25 hertz, measured minus modeled 21.9 decibelsBulker · 2026 July 9 · 07:14 UTC, 31.5 hertz, measured minus modeled 6.8 decibelsBulker · 2026 July 9 · 07:14 UTC, 40 hertz, measured minus modeled 17.2 decibelsBulker · 2026 July 9 · 07:14 UTC, 50 hertz, measured minus modeled 13.0 decibelsBulker · 2026 July 9 · 07:14 UTC, 63 hertz, measured minus modeled 11.7 decibelsBulker · 2026 July 9 · 07:14 UTC, 80 hertz, measured minus modeled 0.9 decibelsBulker · 2026 July 9 · 07:14 UTC, 100 hertz, measured minus modeled -4.8 decibelsBulker · 2026 June 22 · 08:17 UTCBulker · 2026 June 22 · 08:17 UTC, 10 hertz, measured minus modeled 31.1 decibelsBulker · 2026 June 22 · 08:17 UTC, 12.5 hertz, measured minus modeled 28.7 decibelsBulker · 2026 June 22 · 08:17 UTC, 16 hertz, measured minus modeled 28.1 decibelsBulker · 2026 June 22 · 08:17 UTC, 20 hertz, measured minus modeled 15.9 decibelsBulker · 2026 June 22 · 08:17 UTC, 25 hertz, measured minus modeled 14.8 decibelsBulker · 2026 June 22 · 08:17 UTC, 31.5 hertz, measured minus modeled 10.0 decibelsBulker · 2026 June 22 · 08:17 UTC, 40 hertz, measured minus modeled 4.7 decibelsBulker · 2026 June 22 · 08:17 UTC, 50 hertz, measured minus modeled -1.5 decibelsBulker · 2026 June 22 · 08:17 UTC, 63 hertz, measured minus modeled 12.8 decibelsBulker · 2026 June 22 · 08:17 UTC, 80 hertz, measured minus modeled 3.3 decibelsBulker · 2026 June 22 · 08:17 UTC, 100 hertz, measured minus modeled -2.2 decibelsContainer Ship · 2025 April 27 · 07:20 UTCContainer Ship · 2025 April 27 · 07:20 UTC, 10 hertz, measured minus modeled 9.3 decibelsContainer Ship · 2025 April 27 · 07:20 UTC, 12.5 hertz, measured minus modeled 14.5 decibelsContainer Ship · 2025 April 27 · 07:20 UTC, 16 hertz, measured minus modeled 7.8 decibelsContainer Ship · 2025 April 27 · 07:20 UTC, 20 hertz, measured minus modeled 18.2 decibelsContainer Ship · 2025 April 27 · 07:20 UTC, 25 hertz, measured minus modeled 21.1 decibelsContainer Ship · 2025 April 27 · 07:20 UTC, 31.5 hertz, measured minus modeled 7.6 decibelsContainer Ship · 2025 April 27 · 07:20 UTC, 40 hertz, measured minus modeled 5.2 decibelsContainer Ship · 2025 April 27 · 07:20 UTC, 50 hertz, measured minus modeled 6.4 decibelsContainer Ship · 2025 April 27 · 07:20 UTC, 63 hertz, measured minus modeled 19.1 decibelsContainer Ship · 2025 April 27 · 07:20 UTC, 80 hertz, measured minus modeled 4.6 decibelsContainer Ship · 2025 April 27 · 07:20 UTC, 100 hertz, measured minus modeled -10.7 decibelsContainer Ship · 2025 September 27 · 17:09 UTCContainer Ship · 2025 September 27 · 17:09 UTC, 10 hertz, measured minus modeled 13.4 decibelsContainer Ship · 2025 September 27 · 17:09 UTC, 12.5 hertz, measured minus modeled 22.5 decibelsContainer Ship · 2025 September 27 · 17:09 UTC, 16 hertz, measured minus modeled 29.7 decibelsContainer Ship · 2025 September 27 · 17:09 UTC, 20 hertz, measured minus modeled 18.9 decibelsContainer Ship · 2025 September 27 · 17:09 UTC, 25 hertz, measured minus modeled 3.9 decibelsContainer Ship · 2025 September 27 · 17:09 UTC, 31.5 hertz, measured minus modeled 7.8 decibelsContainer Ship · 2025 September 27 · 17:09 UTC, 40 hertz, measured minus modeled 22.1 decibelsContainer Ship · 2025 September 27 · 17:09 UTC, 50 hertz, measured minus modeled 0.9 decibelsContainer Ship · 2025 September 27 · 17:09 UTC, 63 hertz, measured minus modeled 0.3 decibelsContainer Ship · 2025 September 27 · 17:09 UTC, 80 hertz, measured minus modeled 2.1 decibelsContainer Ship · 2025 September 27 · 17:09 UTC, 100 hertz, measured minus modeled 1.5 decibelsContainer Ship · 2026 January 18 · 19:04 UTCContainer Ship · 2026 January 18 · 19:04 UTC, 10 hertz, measured minus modeled 22.1 decibelsContainer Ship · 2026 January 18 · 19:04 UTC, 12.5 hertz, measured minus modeled 25.7 decibelsContainer Ship · 2026 January 18 · 19:04 UTC, 16 hertz, measured minus modeled 16.6 decibelsContainer Ship · 2026 January 18 · 19:04 UTC, 20 hertz, measured minus modeled 13.3 decibelsContainer Ship · 2026 January 18 · 19:04 UTC, 25 hertz, measured minus modeled 4.9 decibelsContainer Ship · 2026 January 18 · 19:04 UTC, 31.5 hertz, measured minus modeled 7.4 decibelsContainer Ship · 2026 January 18 · 19:04 UTC, 40 hertz, measured minus modeled 2.2 decibelsContainer Ship · 2026 January 18 · 19:04 UTC, 50 hertz, measured minus modeled 3.9 decibelsContainer Ship · 2026 January 18 · 19:04 UTC, 63 hertz, measured minus modeled 7.4 decibelsContainer Ship · 2026 January 18 · 19:04 UTC, 80 hertz, measured minus modeled 15.7 decibelsContainer Ship · 2026 January 18 · 19:04 UTC, 100 hertz, measured minus modeled -7.3 decibelsTanker · 2026 March 26 · 10:13 UTCTanker · 2026 March 26 · 10:13 UTC, 10 hertz, measured minus modeled 32.7 decibelsTanker · 2026 March 26 · 10:13 UTC, 12.5 hertz, measured minus modeled 30.5 decibelsTanker · 2026 March 26 · 10:13 UTC, 16 hertz, measured minus modeled 27.0 decibelsTanker · 2026 March 26 · 10:13 UTC, 20 hertz, measured minus modeled 29.5 decibelsTanker · 2026 March 26 · 10:13 UTC, 25 hertz, measured minus modeled 18.5 decibelsTanker · 2026 March 26 · 10:13 UTC, 31.5 hertz, measured minus modeled 16.5 decibelsTanker · 2026 March 26 · 10:13 UTC, 40 hertz, measured minus modeled 16.6 decibelsTanker · 2026 March 26 · 10:13 UTC, 50 hertz, measured minus modeled 13.1 decibelsTanker · 2026 March 26 · 10:13 UTC, 63 hertz, measured minus modeled 5.6 decibelsTanker · 2026 March 26 · 10:13 UTC, 80 hertz, measured minus modeled 10.2 decibelsTanker · 2026 March 26 · 10:13 UTC, 100 hertz, measured minus modeled 24.5 decibelsFrequency (Hz)
-45.045.0Measured minus modeled (dB)
Context & definitions
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Sets and multiple observations

What the collections show

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