The Northwestern Passages
IHO sea area 14 · -128° to -69° E, 64° to 82° N
- in force
- 6
- last 12 months
- 12
- archive messages
- 260
- categories
- 8
What the archive shows
260 messages are recorded since 2001-09-30 for the The Northwestern Passages. The selection uses the IHO sea area; a message may describe an exercise, equipment outage or continuing operation as well as a hazard report.
Nav aids accounts for 67 of 260 recorded messages (26%), the largest category group in this selection.
The NGA historical archive froze in 2024-05; live collection began 2026-08-17. Counts around that gap are incomplete, and changes in reporting volume do not establish changes in incident frequency.
- An older warning still listed in force · issued 2025-08-31 00:15ZA depth of 13.6 meters is reported in Lancaster Sound, Canada at 74-38.63N 091-20.54W.
In force now · 6
- HYDROARC 258/26 · Surveys2026-09-25A scientific mooring is established in Deese Strait, Canada, at 68-55.94N 105-49.66W, with top float at 122 meters.
- HYDROARC 256/26 · Surveys2026-09-25A scientific mooring with a top float at 69 meters is established in Queen Maud Gulf, Canada, at 68-48.95N 105-06.53W.
- HYDROARC 242/26 · Wrecks2026-09-18A 0.3 meter rock depth and a dangerous submerged rock are reported in Amundsen Gulf, Canada, at 70-32.05N 115-59.06W and 70-30.05N 116-04.70W.
- HYDROARC 178/25 · Wrecks2025-10-01Depths reported in Franklin Strait and McClintock Channel, Canada, range from 11.3 to 29.3 meters.
- HYDROARC 175/25 · Wrecks2025-09-29A reported depth of 33.6 meters in McClintock Channel, Canada at 76-40.36N 102-16.62W.
- HYDROARC 148/25 · Wrecks2025-08-31A depth of 13.6 meters is reported in Lancaster Sound, Canada at 74-38.63N 091-20.54W.
Longest in force
- HYDROARC 148/25 · Wrecks2025-08-31A depth of 13.6 meters is reported in Lancaster Sound, Canada at 74-38.63N 091-20.54W.
- HYDROARC 175/25 · Wrecks2025-09-29A reported depth of 33.6 meters in McClintock Channel, Canada at 76-40.36N 102-16.62W.
- HYDROARC 178/25 · Wrecks2025-10-01Depths reported in Franklin Strait and McClintock Channel, Canada, range from 11.3 to 29.3 meters.
- HYDROARC 242/26 · Wrecks2026-09-18A 0.3 meter rock depth and a dangerous submerged rock are reported in Amundsen Gulf, Canada, at 70-32.05N 115-59.06W and 70-30.05N 116-04.70W.
- HYDROARC 256/26 · Surveys2026-09-25A scientific mooring with a top float at 69 meters is established in Queen Maud Gulf, Canada, at 68-48.95N 105-06.53W.
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By category · available archive
| Nav aids | 67 | 26% |
| Surveys | 58 | 22% |
| Wrecks | 49 | 19% |
| Other | 47 | 18% |
| Incidents | 35 | 13% |
| Exercises | 2 | 1% |
| Quakes | 1 | 0% |
| Derelicts | 1 | 0% |
Archive · 254 cancelled
- HYDROARC 138/23 · Nav aids2023-07-24 → 2023-10-16Mcts iqaluit remote station resolute 74-45.00N 094-58.00W hf r/t services off air
- HYDROARC 109/23 · Nav aids2023-06-12 → 2023-09-29Mcts iqaluit remote station resolute 74-45N 094-58W hf and dsc services off air
- HYDROARC 333/22 · Nav aids2022-10-24 → 2022-11-09Mcts iqaluit remote station cambridge bay 69-07.00N 105-01.00W off air for season at 251700Z oct
- HYDROARC 332/22 · Nav aids2022-10-24 → 2022-11-09Mcts iqaluit remote station resolute 74-44.78N 095-00.18W off air for season at 251600Z oct
- HYDROARC 325/22 · Wrecks2022-10-18 → 2023-04-28Shoals reported in: a. 13.2 meters, 68-25.76N 096-37.35W
- HYDROARC 293/22 · Wrecks2022-09-26 → 2026-08-14Shoals reported in McClintock Channel, Canada, at multiple positions with depths from 20.2 to 31.7 meters.
- HYDROARC 292/22 · Nav aids2022-09-23 → 2022-09-26Mcts iqaluit remote station cambridge bay 69-07.00N 105-01.00W mf and hf transmit services off air
- HYDROARC 291/22 · Surveys2022-09-23 → 2026-08-14Scientific moorings are established at several positions in Lancaster Sound, Canada, with top floats between 26 and 246 meters.
- HYDROARC 287/22 · Wrecks2022-09-22 → 2022-09-234.2 meter shoal in 69-50.27N 124-16.28W
- HYDROARC 272/22 · Incidents2022-09-12 → 2022-09-1218 foot vessel, two person on board, unreported in vicinity of pond inlet (72-42.40N 077-57.70W)
- HYDROARC 262/22 · Wrecks2022-09-08 → 2026-08-14A 14-meter shoal exists at 68 degrees 36.32 minutes north, 95 degrees 21.40 minutes west, in Canada.
- HYDROARC 260/22 · Wrecks2022-09-06 → 2026-08-14A 16-meter shoal is located at 68-19.50N 100-46.86W in Queen Maud Gulf, Canada.
- HYDROARC 252/22 · Nav aids2022-08-31 → 2022-09-26Mcts iqaluit remote station cambridge bay 69-07.00N 105-01.00W hf transmit services off air
- HYDROARC 251/22 · Wrecks2022-08-30 → 2023-04-2822 meter depth reported in 69-39.05N 120-45.29W
- HYDROARC 249/22 · Nav aids2022-08-30 → 2022-09-30Taylor point RACON, 69-37.30N 095-35.50W out of service
- HYDROARC 235/22 · Surveys2022-08-24 → 2026-08-14Scientific moorings are established in Queen Maud Gulf, Canada at three positions with top floats at four, twenty, and four meters.
- HYDROARC 232/22 · Surveys2022-08-22 → 2022-08-26Scientific mooring, top float three meters above sea floor, established in 68-48.92N 105-06.56W
- HYDROARC 231/22 · Surveys2022-08-22 → 2022-08-26Scientific mooring, top float seven meters above sea floor, established in 68-55.92N 105-49.71W
- HYDROARC 228/22 · Surveys2022-08-21 → 2026-08-14Scientific moorings with top floats 15 meters below surface are established at two positions in Coronation Gulf, Canada.
- HYDROARC 224/22 · Surveys2022-08-19 → 2026-08-14A scientific mooring with top float 15 meters below surface is established in Coronation Gulf, Canada at 68-20.75N 112-21.12W.
Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.