Military exercises in the North Pacific Ocean

Gunnery, firing and naval exercise areas.

in force
6
last 12 months
20
vs previous 12 (30)
-33%
since 1993
4,626

Coverage note: the NGA archive ends 2024-05 and live collection began 2026-08-17. Warnings issued in between are here only if they were still in force when collection started, so 2024–2026 are under-counted.

In force now · 6

  1. NAVAREA XI 380/26in force2026-08-22
    Hazardous operations are taking place in the Marianas area from 27 August 0200Z to 0600Z, with cancellation at 0700Z.
    North Pacific, Marianas
  2. HYDROPAC 2152/26in force2026-07-27
    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.
    North Pacific
  3. NAVAREA XI 342/26in force2026-07-27
    Gunnery exercise in North Pacific near Nanpo Shoto daily from 31 July to 30 August, 2300Z to 0900Z, in a bounded area.
    North Pacific, Nanpo Shoto · Gunnery
  4. NAVAREA XII 512/26in force2026-07-23
    Hazardous operations are scheduled off the California coast in the North Pacific from August 1 to September 1.
    North Pacific · California
  5. NAVAREA XII 510/26in force2026-07-23
    Hazardous operations are underway off the coast of California from August 1 to September 1.
    North Pacific · California
  6. NAVAREA XII 511/26in force2026-07-23
    Hazardous operations are occurring from August 1 to September 1 in the North Pacific off California.
    North Pacific · California

Longest in force

  1. NAVAREA XII 511/26in force2026-07-23 · 32 d
    Hazardous operations are occurring from August 1 to September 1 in the North Pacific off California.
    North Pacific · California
  2. NAVAREA XII 510/26in force2026-07-23 · 32 d
    Hazardous operations are underway off the coast of California from August 1 to September 1.
    North Pacific · California
  3. NAVAREA XII 512/26in force2026-07-23 · 32 d
    Hazardous operations are scheduled off the California coast in the North Pacific from August 1 to September 1.
    North Pacific · California
  4. NAVAREA XI 342/26in force2026-07-27 · 28 d
    Gunnery exercise in North Pacific near Nanpo Shoto daily from 31 July to 30 August, 2300Z to 0900Z, in a bounded area.
    North Pacific, Nanpo Shoto · Gunnery
  5. HYDROPAC 2152/26in force2026-07-27 · 28 d
    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.
    North Pacific

By year

93
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

Other hazards in the North Pacific Ocean

Archive · 4,620 cancelled

  1. HYDROPAC 546/122012-02-26 → 2012-02-27
    Hazardous operations
    North Pacific
  2. NAVAREA XII 45/122012-02-26 → 2012-02-27
    Hazardous operations
    Eastern North Pacific
  3. HYDROPAC 538/122012-02-25 → 2012-03-31
    Gunnery exercises 2300Z to 0900Z commencing daily 29 feb thru 30 mar in area bound by 27-55-15N 144-57-48E,…
    Western North Pacific · Gunnery
  4. HYDROPAC 497/122012-02-21 → 2012-02-25
    Hazardous operations
    North Pacific
  5. NAVAREA XII 39/122012-02-21 → 2012-02-25
    Hazardous operations
    Eastern North Pacific
  6. HYDROPAC 473/122012-02-19 → 2012-02-24
    Hazardous operations
    North Pacific · Mariana Islands
  7. HYDROPAC 394/122012-02-12 → 2012-02-17
    Hazardous operations
    North Pacific · Mariana Islands
  8. HYDROPAC 341/122012-02-08 → 2012-02-09
    Hazardous operations
    North Pacific · Mariana Islands
  9. HYDROPAC 331/122012-02-07 → 2012-02-08
    Hazardous operations
    North Pacific · Mariana Islands
  10. HYDROPAC 317/122012-02-06 → 2012-02-07
    Hazardous operations
    North Pacific · Mariana Islands
  11. HYDROPAC 316/122012-02-06 → 2012-02-10
    Hazardous operations
    North Pacific · Mariana Islands
  12. HYDROPAC 305/122012-02-04 → 2012-02-06
    Hazardous operations
    North Pacific · Mariana Islands
  13. HYDROPAC 281/122012-02-02 → 2012-02-02
    Hazardous operations
    North Pacific · Mariana Islands
  14. HYDROPAC 232/122012-01-27 → 2012-02-29
    Gunnery exercises 2300Z to 0900Z commencing daily 31 jan thru 28 feb in area bound by 27-55-15N 144-57-48E,…
    Western North Pacific · Gunnery
  15. NAVAREA XII 21/122012-01-27 → 2012-03-01
    Hazardous operations
    Eastern North Pacific
  16. HYDROPAC 194/122012-01-23 → 2012-01-25
    Hazardous operations
    North Pacific · Mariana Islands
  17. HYDROPAC 163/122012-01-19 → 2012-01-20
    Hazardous operations
    North Pacific · Mariana Islands
  18. HYDROPAC 126/122012-01-15 → 2012-01-17
    Hazardous operations
    North Pacific · Mariana Islands
  19. HYDROPAC 96/122012-01-12 → 2012-01-13
    Hazardous operations
    North Pacific · Mariana Islands
  20. HYDROPAC 53/122012-01-08 → 2012-01-11
    Hazardous operations
    North Pacific · Mariana Islands
  21. NAVAREA XII 459/112011-12-28 → 2012-02-01
    Hazardous operations
    Eastern North Pacific
  22. HYDROPAC 3610/112011-12-27 → 2012-01-31
    Gunnery exercises 2300Z to 0900Z commencing daily 31 dec thru 30 jan 12 in area bound by 27-55-15N…
    Western North Pacific · Gunnery
  23. HYDROPAC 3595/112011-12-25 → 2011-12-29
    Hazardous operations
    North Pacific · Mariana Islands
  24. HYDROPAC 3546/112011-12-19 → 2011-12-21
    Hazardous operations in progress until 211359Z dec within ten miles of 16-01N 146-04E
    North Pacific · Mariana Islands · Hazardous Operation
  25. HYDROPAC 3531/112011-12-18 → 2011-12-19
    Hazardous operations
    North Pacific · Mariana Islands
  26. HYDROPAC 3519/112011-12-17 → 2011-12-17
    Hazardous operations
    North Pacific · Mariana Islands
  27. HYDROPAC 3501/112011-12-15 → 2011-12-16
    Hazardous operations
    North Pacific · Mariana Islands
  28. HYDROPAC 3500/112011-12-15 → 2011-12-16
    Hazardous operations
    North Pacific · Mariana Islands
  29. HYDROPAC 3487/112011-12-14 → 2011-12-15
    Hazardous operations
    North Pacific · Mariana Islands
  30. HYDROPAC 3476/112011-12-13 → 2011-12-15
    Hazardous operations
    North Pacific · Mariana Islands
  31. HYDROPAC 3470/112011-12-12 → 2011-12-13
    Hazardous operations
    North Pacific · Mariana Islands
  32. HYDROPAC 3469/112011-12-12 → 2011-12-13
    Hazardous operations
    North Pacific · Mariana Islands
  33. HYDROPAC 3455/112011-12-11 → 2011-12-12
    Hazardous operations
    North Pacific · Mariana Islands
  34. HYDROPAC 3454/112011-12-11 → 2011-12-12
    Hazardous operations
    North Pacific · Mariana Islands
  35. HYDROPAC 3422/112011-12-08 → 2011-12-08
    Hazardous operations
    North Pacific · Mariana Islands
  36. HYDROPAC 3420/112011-12-08 → 2011-12-09
    Hazardous operations
    North Pacific · Mariana Islands
  37. HYDROPAC 3409/112011-12-07 → 2011-12-08
    Hazardous operations
    North Pacific · Mariana Islands
  38. HYDROPAC 3386/112011-12-05 → 2011-12-06
    Hazardous operations
    North Pacific · Mariana Islands
  39. HYDROPAC 3340/112011-11-30 → 2011-12-08
    Gunnery exercises 2200Z to 0600Z commencing daily 30 nov thru 07 dec in 12-48.00N 144-37.50E
    North Pacific · Mariana Islands · Gunnery
  40. HYDROPAC 3312/112011-11-26 → 2011-12-31
    Gunnery exercises 2300Z to 0900Z commencing daily 30 nov thru 30 dec in area bound by 27-55-15N 144-57-48E,…
    Western North Pacific · Gunnery
  41. HYDROPAC 3253/112011-11-20 → 2011-11-22
    Hazardous operations
    North Pacific · Mariana Islands
  42. HYDROPAC 3220/112011-11-16 → 2011-11-17
    Hazardous operations
    North Pacific · Mariana Islands
  43. HYDROPAC 3214/112011-11-15 → 2011-11-16
    Hazardous operations
    North Pacific · Mariana Islands
  44. HYDROPAC 3207/112011-11-14 → 2011-11-15
    Hazardous operations
    North Pacific · Mariana Islands
  45. HYDROPAC 3205/112011-11-14 → 2011-11-15
    Hazardous operations
    North Pacific · Mariana Islands
  46. HYDROPAC 3166/112011-11-10 → 2011-11-11
    Hazardous operations
    North Pacific · Mariana Islands
  47. HYDROPAC 3135/112011-11-07 → 2011-11-10
    Hazardous operations
    North Pacific · Mariana Islands
  48. NAVAREA XII 414/112011-11-06 → 2011-11-22
    Hazardous operations
    Eastern North Pacific · Mexico-southwest Coast
  49. NAVAREA XII 412/112011-11-06 → 2011-11-22
    Hazardous operations
    Mexico-south Coast
  50. HYDROPAC 3128/112011-11-06 → 2011-11-07
    Hazardous operations
    North Pacific · Mariana Islands

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

Military exercises in the North Pacific Ocean — page 66 · seahazards