North Pacific Ocean

IHO sea area 57 · -180° to 180° E, 0° to 58° N

in force
38
last 12 months
78
since 1993
9,611
categories
15

In force now · 38

  1. NAVAREA XII 589/26 · Exercises2026-08-27
    Hazardous operations are scheduled off California September 1 1800 UTC to September 2 0100 UTC, with alternate September 3 to 4, in a defined area.
  2. HYDROPAC 2458/26 · Nav aids2026-08-27
    United States Coast Guard remote communication facility in Guam at 13-29N 144-50E has high-frequency NAVTEX and SITOR services off air.
  3. NAVAREA XII 588/26 · Exercises2026-08-27
    Hazardous operations are underway off California on August 31 from 13:00 to 21:00 Coordinated Universal Time in a bounded area.
  4. HYDROPAC 2457/26 · Exercises2026-08-27
    Gunnery exercises occur daily from 2300Z to 0900Z, August 31 to September 29, in the North Pacific.
  5. NAVAREA XI 392/26 · Exercises2026-08-27
    Gunnery exercise daily 2300Z to 0900Z from Aug 31 to Sep 29 in North Pacific, Nanpo Shoto.
  6. HYDROPAC 2460/26 · Exercises2026-08-27
    Naval hazardous operations daily 01 through 05 September, 1400 to 1359 UTC, in areas near Guam, cancelled at 061459 UTC September 26.
  7. HYDROPAC 2442/26 · Missiles2026-08-26
    Rocket launching hazardous operations daily 2100Z-1300Z 30 Aug-2 Sep, 5-6 Sep, alternate 7-9 Sep, within 25 miles of 31-14.21N 144-26.80E. Cancel message 101400Z Sep 26.
  8. NAVAREA XI 391/26 · Missiles2026-08-26
    Rocket firing occurs daily from 30 August to 2, 5, and 6 September and alternate 7-9 September within 25 miles of 31-14-14N 144-26-48E.
  9. HYDROPAC 2452/26 · Exercises2026-08-26
    Hazardous operations occur daily on September 1 and 2, from 0100Z to 0800Z, in an area near Guam.
  10. NAVAREA XII 580/26 · Cable ops2026-08-24
    Cable operations are underway by cable ship Ile de Sein along a trackline off California in the North Pacific until further notice; wide berth requested.
  11. NAVAREA XII 578/26 · Exercises2026-08-24
    Hazardous operations take place in three North Pacific areas from 0600 to 1515 UTC on 28 August, with alternate times on 29 August.
  12. NAVAREA XII 587/26 · Missiles2026-08-21
    Rocket launching hazardous operations are underway off California in the North Pacific from September 1-7, with alternate times, cancelling at 1217Z September 7.
  13. NAVAREA XII 586/26 · Exercises2026-08-21
    Hazardous operations are underway off California from September 1 0800 UTC to October 1 0800 UTC in a defined area.
  14. NAVAREA XII 584/26 · Exercises2026-08-21
    Hazardous operations off California in an area bounded by 32-40N to 32-55N and 118-15W to 118-35W from September 1 to October 1.
  15. NAVAREA XII 585/26 · Exercises2026-08-21
    Hazardous operations are occurring off California in the North Pacific from September 1 to October 1 within a specified area.
  16. HYDROPAC 2282/26 · Cable ops2026-08-10
    Cable operations by cableship Aniek are in progress until further notice along a trackline in the North Pacific near coordinates 45-07.40N 163-31.90E to 38-48.00N 147-55.50E. Wide berth requested.
  17. NAVAREA XI 364/26 · Cable ops2026-08-10
    Submarine cable recovery works by motor vessel Aniek in northwestern North Pacific from 092200Z Aug until further notice near coordinates 45-07N 163-32E to 38-48N 147-56E.
  18. HYDROPAC 2152/26 · Exercises2026-07-27
    Gunnery exercises daily 2300-0900 Zulu, July 31 to August 30, North Pacific area bounded by 28-15N 146-30E, 25-25N 147-38E, 25-00N 145-36E, 27-55N 145-58E.
  19. NAVAREA XII 512/26 · Exercises2026-07-23
    Hazardous operations are scheduled off the California coast in the North Pacific from August 1 to September 1.
  20. NAVAREA XII 510/26 · Exercises2026-07-23
    Hazardous operations are underway off the coast of California from August 1 to September 1.
  21. NAVAREA XII 511/26 · Exercises2026-07-23
    Hazardous operations are occurring from August 1 to September 1 in the North Pacific off California.
  22. NAVAREA XI 328/26 · Nav aids2026-07-21
    The Number 1 lighted buoy at Malakal Harbor in the West Carolines, North Pacific, at 07-19.17N 134-27.17E, is missing.
  23. HYDROPAC 2039/26 · Volcanic2026-07-16
    Discolored water with increased likelihood of submarine volcanic activity is reported in Northern Mariana Islands vicinity at 20-26N 145-01E on July 16 at 0013Z.
  24. NAVAREA XI 322/26 · Volcanic2026-07-16
    Discoloured water reported near 20-26.0N 145-01.0E on 16 July at 0013Z; cancels warning 0020/24.
  25. HYDROPAC 1906/26 · Nav aids2026-07-03
    The United States Coast Guard's remote communication facility at Guam (13-29N 144-50E) has unreliable broadcast and communication services.
  26. NAVAREA XII 678/25 · Other2025-10-30
    A fish farm has been established in an area off Colombia, from 06-03N to 07-11N and 077-28W to 078-08W; wide berth requested.
  27. HYDROPAC 1819/25 · Wrecks2025-07-17
    Depths between 5.4 and 18.8 meters reported at several positions in Marshall Islands, North Pacific.
  28. NAVAREA XII 392/25 · Debris2025-06-24
    Motor vessel Morning Midas is reported to have sunk in the North Pacific at 45-16.88N 179-14.13W; vessels should report oil sheens or debris to USCG.
  29. HYDROPAC 1650/25 · Debris2025-06-24
    Vessel Morning Midas sank in North Pacific at 45-16.88N 179-14.13W; navigate with caution and report debris or oil sheens.
  30. NAVAREA XII 354/25 · Nav aids2025-06-13
    Messaging services are unreliable at Coast Guard remote communication facilities at Point Reyes, Honolulu, Kodiak, Astoria, and Cambria.
  31. NAVAREA XII 338/25 · Nav aids2025-06-07
    The US Coast Guard remote communication facility at Astoria, Oregon (46-10.00N 123-49.00W), is off the air.
  32. NAVAREA XII 208/25 · Nav aids2025-04-06
    Punta Soldado light at 03-48.50N 077-10.80W is discontinued.
  33. NAVAREA XII 862/24 · Cable ops2024-10-28
    Cable operations are in progress in the eastern North Pacific near Kiribati until further notice; a 100-meter berth is requested.
  34. NAVAREA XII 441/24 · Nav aids2024-06-18
    Morro Santo Domingo light at 28-14.37N 114-06.18W is unlit.
  35. NAVAREA XII 93/23 · Missiles2023-02-28
    Periodic missile firing operations by Pacific Missile Range Facility, Barking Sands, Kauai, Hawaii, occur in Whiskey 188; vessels should contact on channel 16.
  36. NAVAREA XII 721/22 · Nav aids2022-09-27
    In El Salvador, mooring buoys at 13-35.23N 089-51.10W are unlit.
  37. NAVAREA XII 720/22 · Nav aids2022-09-27
    Buoy 16 at Puerto de La Union, El Salvador, at 13-20.36N 087-48.99W is unlit.
  38. NAVAREA XII 243/22 · Nav aids2022-04-15
    Coronado Island South Light at 32-23.5N 117-14.5W is unlit; warning 159/21 is now cancelled.

Longest in force

  1. NAVAREA XII 243/22 · Nav aids2022-04-15
    Coronado Island South Light at 32-23.5N 117-14.5W is unlit; warning 159/21 is now cancelled.
  2. NAVAREA XII 720/22 · Nav aids2022-09-27
    Buoy 16 at Puerto de La Union, El Salvador, at 13-20.36N 087-48.99W is unlit.
  3. NAVAREA XII 721/22 · Nav aids2022-09-27
    In El Salvador, mooring buoys at 13-35.23N 089-51.10W are unlit.
  4. NAVAREA XII 93/23 · Missiles2023-02-28
    Periodic missile firing operations by Pacific Missile Range Facility, Barking Sands, Kauai, Hawaii, occur in Whiskey 188; vessels should contact on channel 16.
  5. NAVAREA XII 441/24 · Nav aids2024-06-18
    Morro Santo Domingo light at 28-14.37N 114-06.18W is unlit.

By year

93
96
98
99
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

By month (all years)

J
F
M
A
M
J
J
A
S
O
N
D

By category · since 1997

Exercises4,64048%
Missiles1,75118%
Other8259%
Nav aids7578%
Towing5326%
Derelicts4785%
Cable ops2272%
Surveys1502%
Containers1131%
Debris811%
Wrecks380%
Volcanic130%
Mines40%
Piracy10%
Icebergs10%

Archive · 9,573 cancelled

  1. HYDROPAC 1944/09 · Exercises2009-10-27 → 2009-10-28
    Hazardous operations 0400Z to 0800Z daily 27 and 28 oct within ten miles of 16-01N 146-04E
  2. NAVAREA XII 505/09 · Cable ops2009-10-26 → 2009-10-28
    Cable operations by cableship tyco resolute: a. 26 oct vicinity 44-13.0N 155-59.0W
  3. NAVAREA XII 503/09 · Missiles2009-10-25 → 2009-11-01
    Intermittent missile firing operations 0001Z to 2359Z daily monday thru sunday in the naval air warfare…
  4. NAVAREA XII 499/09 · Exercises2009-10-24 → 2009-10-28
    Hazardous operations 280130Z to 280700Z oct, alternate 0130Z to 0700Z daily 29 thru 31 oct in area bound by…
  5. HYDROPAC 1930/09 · Exercises2009-10-24 → 2009-10-26
    Hazardous operations 252000Z to 260001Z oct within 30 miles of 36-40N 146-00E
  6. HYDROPAC 1925/09 · Other2009-10-23 → 2009-10-24
    Pyrotechnics exercises 240300Z to 240430Z oct within 30 miles of 36-00N 152-30E
  7. HYDROPAC 1924/09 · Exercises2009-10-23 → 2009-10-24
    Hazardous operations 240100Z to 240400Z oct within 30 miles of 36-00N 152-30E
  8. NAVAREA XII 490/09 · Nav aids2009-10-20 → 2009-10-20
    Nga chart 18766 (7TH ed)
  9. HYDROPAC 1896/09 · Exercises2009-10-18 → 2009-10-22
    Hazardous operations 190100Z to 191359Z, 200900Z to 201359Z, 0100Z to 1359Z daily 21 and 22 oct within ten…
  10. NAVAREA XII 485/09 · Missiles2009-10-18 → 2009-10-25
    Intermittent missile firing operations 0001Z to 2359Z daily monday thru sunday in the naval air warfare…
  11. NAVAREA XII 484/09 · Nav aids2009-10-17 → 2009-10-21
    Nos chart 19010 (19TH ed)
  12. HYDROPAC 1892/09 · Exercises2009-10-17 → 2009-10-18
    Hazardous operations 182200Z to 181359Z oct within ten of miles 16-01N 146-04E
  13. NAVAREA XII 482/09 · Exercises2009-10-15 → 2009-10-17
    Hazardous operations 170130Z to 170700Z oct, alternate 0130Z to 0700Z daily 18 and 20 oct in area bound by…
  14. HYDROPAC 1873/09 · Exercises2009-10-15 → 2009-10-16
    Hazardous operations 152200Z to 161359Z oct within ten of miles 16-01N 146-04E
  15. NAVAREA XII 481/09 · Exercises2009-10-14 → 2009-10-16
    Hazardous operations 0001Z to 0700Z daily 14 thru 16 oct in areas bound by: a. 30-33N 128-10W, 29-36N…
  16. NAVAREA XII 480/09 · Exercises2009-10-13 → 2009-10-20
    Hazardous operations 1542Z to 1722Z daily 18 thru 21 oct in areas bound by: a. 34-26N 120-36W, 34-27N…
  17. NAVAREA XII 479/09 · Exercises2009-10-12 → 2009-10-15
    Hazardous operations 170130Z to 170700Z oct, alternate 0130Z to 0700Z daily 18 and 20 oct in area bound by…
  18. HYDROPAC 1849/09 · Exercises2009-10-12 → 2009-10-14
    Hazardous operations 2200Z to 1400Z commencing daily 12 and 13 oct within ten of miles 16-01N 146-04E
  19. NAVAREA XII 475/09 · Missiles2009-10-11 → 2009-10-18
    Intermittent missile firing operations 0001Z to 2359Z daily monday thru sunday in the naval air warfare…
  20. NAVAREA XII 471/09 · Nav aids2009-10-10 → 2009-11-21
    Nga chart 21126 (1ST ed)

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