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 240/17 · Other2017-09-01 → 2017-09-02
    Mcts iqaluit remote station resolute 74-45N 094-58W inoperative
  2. HYDROARC 228/17 · Wrecks2017-08-26 → 2019-01-04
    Shoals reported: a. 6.0 meters in 69-30.76N 094-59.05W
  3. HYDROARC 200/17 · Other2017-08-08 → 2017-08-08
    Mcts iqaluit remote station resolute 74-45N 094-58W inoperative until 082200Z aug
  4. HYDROARC 193/17 · Incidents2017-08-07 → 2017-08-25
    20 foot M/V, nine persons on board, overdue hull beach (68-46.6N 081-13.5W) to 67-57.1N 082-05.4W
  5. HYDROARC 190/17 · Other2017-08-06 → 2017-08-11
    Mcts iqaluit remote station resolute 74-45N 094-58W radiofacsimile frequencies 3253 khz and 7710 khz…
  6. HYDROARC 189/17 · Surveys2017-08-04 → 2019-04-05
    Scientific mooring, top float 292 meters below surface, established in 70-40.87N 126-52.28W
  7. HYDROARC 188/17 · Surveys2017-08-04 → 2019-04-05
    Scientific mooring, top float 38 meters below surface, established in 70-34.60N 127-39.62W
  8. HYDROARC 166/17 · Other2017-07-26 → 2017-07-27
    Mcts iqaluit remote station resolute 74-44.8N 095-00.2W inoperative
  9. HYDROARC 146/17 · Other2017-07-15 → 2017-07-21
    Mcts iqaluit remote station resolute 74-45N 094-58W radiofacsimile frequencies 3253 khz and 7710 khz…
  10. USGS-US10007S20 · Quakes2017-01-08 → 2017-01-11
    Earthquake magnitude 6.0 (mww) in 74.386N 092.416W, depth 31 km at 082347Z jan 17
  11. HYDROARC 337/16 · Wrecks2016-12-08 → 2017-04-07
    Obstruction, two meters below surface, in 68-36.86N 100-13.36W
  12. HYDROARC 309/16 · Nav aids2016-10-21 → 2016-10-21
    Mcts iqaluit remote station resolute 74-45N 094-58W dsc and nbdp services inoperative
  13. HYDROARC 279/16 · Other2016-10-04 → 2016-10-04
    Mcts iqaluit remote station resolute 74-45N 094-58W radiofacsimile frequencies 3253 khz and 7710 khz…
  14. NAVAREA IV 841/16 · Nav aids2016-10-03 → 2016-10-03
    Mcts iqaluit remote stations hf transmit and receive services inoperative: a. coral harbour 64-09N 083-22W
  15. HYDROARC 275/16 · Nav aids2016-10-03 → 2016-10-03
    Mcts iqaluit remote stations hf transmit and receive services inoperative: a. coral harbour 64-09N 083-22W
  16. NAVAREA IV 840/16 · Nav aids2016-10-02 → 2016-10-03
    Mcts iqaluit remote stations hf transmit and receive services inoperative: a. resolute 74-45N 094-58W
  17. HYDROARC 273/16 · Nav aids2016-10-02 → 2016-10-04
    Mcts iqaluit remote stations hf transmit and receive services inoperative: a. resolute 74-45N 094-58W
  18. HYDROARC 266/16 · Other2016-09-28 → 2016-09-28
    Mcts iqaluit remote station resolute 74-44.8N 095-00.2W inoperative
  19. HYDROARC 264/16 · Other2016-09-27 → 2016-09-27
    Mcts iqaluit remote station cambridge bay 69-07N 105-01W inoperative until 272300Z sep
  20. HYDROARC 260/16 · Other2016-09-25 → 2016-09-25
    Mcts iqaluit remote station cambridge bay 69-07N 105-01W inoperative 251400Z to 251600Z sep

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

The Northwestern Passages — navigational warnings — archive page 7 · seahazards