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)

J
F
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A
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By category · available archive

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

Archive · 254 cancelled

  1. HYDROARC 192/21 · Nav aids2021-08-18 → 2021-08-20
    Mcts iqaluit remote station resolute 74-45N 094-58W off air
  2. HYDROARC 177/21 · Nav aids2021-08-10 → 2021-08-17
    Mcts iqaluit remote station resolute 74-45N 094-58W off air
  3. HYDROARC 173/21 · Nav aids2021-08-09 → 2021-08-09
    Mcts iqaluit remote station resolute 74-45N 094-58W off air
  4. HYDROARC 172/21 · Nav aids2021-08-07 → 2021-08-09
    Mcts iqaluit remote station resolute 74-45N 094-58W hf rt transmit frequency 4363 khz off air
  5. HYDROARC 162/21 · Nav aids2021-07-31 → 2021-08-05
    Mcts iqaluit remote station resolute 74-45N 094-58W off air
  6. HYDROARC 135/21 · Nav aids2021-07-12 → 2021-07-31
    Mcts iqaluit remote station resolute 74-45N 094-58W hf dsc and r/t transmit off air
  7. HYDROARC 125/21 · Nav aids2021-07-04 → 2021-07-05
    Mcts iqaluit remote stations r/t transmit services inoperative: a. iqaluit 63-43.8N 068-32.7W
  8. HYDROARC 124/21 · Nav aids2021-07-04 → 2021-07-04
    Mcts iqaluit remote stations r/t transmit services inoperative: a. resolute 74-45N 094-58W
  9. HYDROARC 247/20 · Nav aids2020-10-19 → 2020-10-23
    Mcts iqaluit remote station resolute 74-45N 094-58W off air
  10. HYDROARC 211/20 · Nav aids2020-09-26 → 2020-10-19
    Mcts iqaluit remote station resolute 74-45N 094-58W off air
  11. HYDROARC 204/20 · Surveys2020-09-22 → 2020-10-23
    Scientific mooring, top float 12 meters below surface, established in 70-34.7N 123-38.2W
  12. HYDROARC 193/20 · Nav aids2020-09-13 → 2020-09-14
    Mcts iqaluit remote station cambridge bay 69-07N 105-01W off air
  13. HYDROARC 169/20 · Nav aids2020-09-04 → 2020-09-04
    Mcts iqaluit remote station resolute 74-45N 094-58W mf, hf, hf-dsc and nbdp services inoperative
  14. HYDROARC 166/20 · Nav aids2020-09-03 → 2020-09-03
    Mcts iqaluit remote station resolute 74-45N 094-58W off air
  15. HYDROARC 164/20 · Nav aids2020-09-02 → 2020-09-02
    Mcts iqaluit remote station resolute 74-45N 094-58W off air
  16. HYDROARC 146/20 · Nav aids2020-08-12 → 2020-08-12
    Mcts iqaluit remote station resolute 74-45N 094-58W off air
  17. HYDROARC 144/20 · Nav aids2020-08-11 → 2020-08-11
    Mcts iqaluit remote station resolute 74-45N 094-58W mf receive services off air
  18. HYDROARC 134/20 · Nav aids2020-08-04 → 2020-08-11
    Mcts iqaluit remote station resolute 74-45N 094-58W mf services inoperative
  19. HYDROARC 272/19 · Nav aids2019-11-01 → 2019-11-01
    Mcts iqaluit remote station resolute 74-45N 094-58W off air for the season at 020001Z nov
  20. HYDROARC 269/19 · Nav aids2019-10-28 → 2019-11-01
    Mcts iqaluit remote station cambridge bay 69-07N 105-01W off air at 291400Z oct

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