Exercises

Hazardous operations 122200Z to 131000Z jul, alternate 132200Z to 141000Z jul in area bound by 37-17N…

HYDROPAC 617/93

issued: 1993-07-08 12:37Z
status: cancelled 1993-07-14 00:00Z (archive)
self-cancels: 1993-07-14 11:00Z
sea: Japan Sea
position: 36.933, 135.333
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HAZARDOUS OPERATIONS 122200Z TO 131000Z JUL,
   ALTERNATE 132200Z TO 141000Z JUL IN AREA BOUND BY
   37-17N 135-40E, 36-57N 135-40E, 36-35N 135-00E,
   36-55N 135-00E.
2. CANCEL THIS MSG 141100Z JUL.

Activity windows · 2 in this warning

opens (UTC)	closes (UTC)	local	length
1993-07-12 22:00Z	1993-07-13 10:00Z	—	12 h
1993-07-13 22:00Z	1993-07-14 10:00Z	—	12 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

This area · military exercises

2 within 180 nm since 1993 · 0 in the last 12 months · 0 in force now

Hazardous operations in progress until 31 jul in area bound by 36-33N 134-45E, 37-40N 133-25E, 38-33N…1999-07-02

Season · when military exercises happen here

month of issue, all years in the archive

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

35 military exercises in force · see all

Exercises

Gunnery, firing and naval exercise areas. All current military exercises →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.