Exercises

Hazardous operations

Sea of Japan · HYDROPAC 1623/16

issued: 2016-06-01 12:37Z
status: cancelled 2016-06-01 17:41Z (archive)
self-cancels: 2016-06-08 11:00Z
authority: NAVAREA XI 326/16 011138Z JUN 16.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

SEA OF JAPAN.
HAZARDOUS OPERATIONS.
DNC 23, DNC 24.
1. HAZARDOUS OPERATIONS 2100Z TO 1000Z
   COMMENCING DAILY 05 THRU 07 JUN
   IN AREA BETWEEN
   41-40N 42-15N AND 132-23E 132-49E.
2. CANCEL THIS MSG 081100Z JUN 16.

Activity windows · 3 in this warning

opens (UTC)	closes (UTC)	local	length
2016-06-05 21:00Z	2016-06-06 10:00Z	—	13 h
2016-06-06 21:00Z	2016-06-07 10:00Z	—	13 h
2016-06-07 21:00Z	2016-06-08 10:00Z	—	13 h

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

Timeline

Hazardous operationscancelled by · 2016-06-01

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.