Exercises

Hazardous operations: a. 010001Z to 010200Z nov, alternate 020001Z to 020200Z nov in area bound by 11-57.62N…

South China Sea · Vietnam · HYDROPAC 3950/18

issued
2018-10-31 12:53Z
status
cancelled 2018-11-03 03:30Z (archive)
self-cancels
2018-11-03 03:30Z
authority
HAIPHONG RADIO 311239Z OCT 18.
sea
South China Sea
position
11.938, 109.303
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

SOUTH CHINA SEA.
VIETNAM.
DNC 11.
1. HAZARDOUS OPERATIONS:
   A. 010001Z TO 010200Z NOV, ALTERNATE
   020001Z TO 020200Z NOV IN AREA BOUND BY
   11-57.62N 109-16.22E, 11-57.37N 109-20.33E,
   11-53.78N 109-18.62E, 11-57.27N 109-15.75E.
   B. 020020Z TO 020230Z NOV, ALTERNATE
   030020Z TO 030230Z NOV IN AREA BETWEEN
   12-40N 11-20N AND 109-48E 110-18E.
2. CANCEL THIS MSG 030330Z NOV 18.

Activity windows · 4 in this warning

opens (UTC)closes (UTC)locallength
2018-11-01 00:01Z2018-11-01 02:00Z1 h 59
2018-11-02 00:01Z2018-11-02 02:00Z1 h 59
2018-11-02 00:20Z2018-11-02 02:30Z2 h 10
2018-11-03 00:20Z2018-11-03 02:30Z2 h 10

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

51 within 180 nm since 2015 · 0 in the last 12 months · 0 in force now

15
20
22

Season · when military exercises happen here

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

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.