Exercises

Hazardous operations in progress until 251130Z oct in area bound by 20-14N 106-35E, 20-16N 106-42E, 20-24N…

Gulf of Tonkin · Vietnam · HYDROPAC 3621/17

issued
2017-10-24 02:59Z
status
cancelled 2017-10-25 12:30Z (archive)
self-cancels
2017-10-25 12:30Z
authority
HAIPHONG RADIO 240230Z OCT 17.
sea
South China Sea
position
20.300, 106.639
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

GULF OF TONKIN.
VIETNAM.
DNC 23.
1. HAZARDOUS OPERATIONS IN PROGRESS UNTIL 251130Z OCT
   IN AREA BOUND BY
   20-14N 106-35E, 20-16N 106-42E,
   20-24N 106-38E.
2. CANCEL THIS MSG 251230Z OCT 17.

This area · military exercises

27 within 180 nm since 2014 · 0 in the last 12 months · 0 in force now

14
15
19

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.