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.

In force now · 6

  1. HYDROARC 258/26 · Surveys2026-09-25
    A scientific mooring is established in Deese Strait, Canada, at 68-55.94N 105-49.66W, with top float at 122 meters.
  2. HYDROARC 256/26 · Surveys2026-09-25
    A scientific mooring with a top float at 69 meters is established in Queen Maud Gulf, Canada, at 68-48.95N 105-06.53W.
  3. HYDROARC 242/26 · Wrecks2026-09-18
    A 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.
  4. HYDROARC 178/25 · Wrecks2025-10-01
    Depths reported in Franklin Strait and McClintock Channel, Canada, range from 11.3 to 29.3 meters.
  5. HYDROARC 175/25 · Wrecks2025-09-29
    A reported depth of 33.6 meters in McClintock Channel, Canada at 76-40.36N 102-16.62W.
  6. HYDROARC 148/25 · Wrecks2025-08-31
    A depth of 13.6 meters is reported in Lancaster Sound, Canada at 74-38.63N 091-20.54W.

Longest in force

  1. HYDROARC 148/25 · Wrecks2025-08-31
    A depth of 13.6 meters is reported in Lancaster Sound, Canada at 74-38.63N 091-20.54W.
  2. HYDROARC 175/25 · Wrecks2025-09-29
    A reported depth of 33.6 meters in McClintock Channel, Canada at 76-40.36N 102-16.62W.
  3. HYDROARC 178/25 · Wrecks2025-10-01
    Depths reported in Franklin Strait and McClintock Channel, Canada, range from 11.3 to 29.3 meters.
  4. HYDROARC 242/26 · Wrecks2026-09-18
    A 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.
  5. HYDROARC 256/26 · Surveys2026-09-25
    A scientific mooring with a top float at 69 meters is established in Queen Maud Gulf, Canada, at 68-48.95N 105-06.53W.

By year

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By month (all years)

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By category · available archive

Nav aids6726%
Surveys5822%
Wrecks4919%
Other4718%
Incidents3513%
Exercises21%
Quakes10%
Derelicts10%

Archive · 254 cancelled

  1. HYDROARC 254/19 · Nav aids2019-10-10 → 2019-10-11
    Mcts iqaluit remote station resolute 74-45N 094-58W off air 101432Z to 102332Z oct
  2. HYDROARC 249/19 · Nav aids2019-10-09 → 2019-10-09
    Mcts iqaluit remote station resolute 74-44.8N 095-00.2W mf and hf r/t off air 091300Z to 092100Z oct
  3. HYDROARC 242/19 · Incidents2019-10-05 → 2019-10-05
    24 foot canoe, green hull, three persons on board, overdue igloolik (69-23N 081-48W) to hall beach (68-47N…
  4. HYDROARC 214/19 · Wrecks2019-09-13 → 2019-10-25
    Three meter shoal in 69-08.65N 113-47.87W
  5. HYDROARC 197/19 · Wrecks2019-09-03 → 2019-09-13
    5.4 meter shoal in 68-28.50N 111-03.66W
  6. HYDROARC 176/19 · Wrecks2019-08-19 → 2019-09-13
    6.3 meter shoal in 68-35.41N 111-01.28W
  7. HYDROARC 157/19 · Nav aids2019-08-04 → 2019-08-04
    Mcts iqaluit remote station resolute 74-44.8N 095-00.2W mf and hf r/t inoperative until further notice at…
  8. HYDROARC 155/19 · Nav aids2019-08-02 → 2019-08-02
    Mcts iqaluit remote station resolute 74-45N 094-58W mf and hf services inoperative
  9. HYDROARC 148/19 · Other2019-07-29 → 2019-07-30
    Mcts iqaluit remote station resolute 74-45N 094-58W inoperative
  10. HYDROARC 147/19 · Other2019-07-29 → 2019-07-29
    Mcts iqaluit remote station resolute 74-45N 094-58W inoperative
  11. NAVAREA IV 660/19 · Other2019-07-28 → 2019-07-29
    Mcts iqaluit remote station resolute 74-45N 094-58W inoperative
  12. HYDROARC 144/19 · Other2019-07-28 → 2019-07-29
    Mcts iqaluit remote station resolute 74-45N 094-58W inoperative
  13. HYDROARC 301/18 · Surveys2018-11-08 → 2019-04-05
    Bottom scientific mooring extending 3.5 meters above sea floor established in 70-33.81N 127-41.57W at depth…
  14. HYDROARC 256/18 · Surveys2018-10-03 → 2019-04-05
    Scientific mooring, top float 348 meters below surface, established in 70-12.06N 123-09.47W
  15. HYDROARC 255/18 · Surveys2018-10-03 → 2019-04-05
    Scientific mooring, top float 149 meters below surface, established in 70-23.62N 124-32.43W
  16. HYDROARC 235/18 · Other2018-09-13 → 2018-10-30
    Mcts iqaluit remote station resolute 74-45N 094-58W frequency 16804.5 khz and 16695.0 khz inoperative
  17. HYDROARC 233/18 · Nav aids2018-09-13 → 2018-09-13
    Mcts iqaluit remote station cambridge bay 69-07N 105-01W hf, mf off air
  18. HYDROARC 229/18 · Wrecks2018-09-11 → 2019-06-14
    Shoals reported in: a. 8.2 metres, 68-38.5N 101-46.1W
  19. HYDROARC 225/18 · Wrecks2018-09-06 → 2019-06-14
    Shoals reported in: a. 24.5 meters 69-01.4N 105-12.8W
  20. HYDROARC 214/18 · Wrecks2018-08-29 → 2018-09-06
    Shoals reported in: a. 24.5 meters 69-01.4N 105-12.8W

Sea boundaries: Flanders Marine Institute (2018), IHO Sea Areas v3, marineregions.org (CC BY 4.0). Not for navigation — follow official NAVAREA / coastal broadcasts.