Exercises

Hazardous operations 020020Z to 020230Z nov, alternate 030020Z to 030230Z nov in area between 11-20N 12-40N…

South China Sea · Vietnam · HYDROPAC 3951/18

issued: 2018-11-01 01:09Z
status: cancelled 2018-11-03 03:30Z (archive)
self-cancels: 2018-11-03 03:30Z
authority: NAVAREA XI 554/18 010002Z NOV 18.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

SOUTH CHINA SEA.
VIETNAM.
DNC 11.
1. HAZARDOUS OPERATIONS 020020Z TO 020230Z NOV,
   ALTERNATE 030020Z TO 030230Z
   NOV IN AREA BETWEEN
   11-20N 12-40N AND 109-48E 110-18E.
2. CANCEL THIS MSG 030330Z NOV 18.

Activity windows · 2 in this warning

opens (UTC)	closes (UTC)	local	length
2018-11-02 00:20Z	2018-11-02 02:30Z	—	2 h 10
2018-11-03 00:20Z	2018-11-03 02:30Z	—	2 h 10

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

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.