Other
Underwater ordnance detonations 160001Z to 160430Z mar, alternate 170001Z to 170430Z mar in area bound by…
Gulf of Tonkin · Vietnam · HYDROPAC 887/17
- issued
- 2017-03-15 06:17Z
- status
- cancelled 2017-03-17 05:30Z (archive)
- self-cancels
- 2017-03-17 05:30Z
- authority
- HAIPHONG RADIO 150410Z MAR 17.
- sea
- South China Sea
- position
- 20.775, 107.485
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
GULF OF TONKIN. VIETNAM. DNC 23. 1. UNDERWATER ORDNANCE DETONATIONS 160001Z TO 160430Z MAR, ALTERNATE 170001Z TO 170430Z MAR IN AREA BOUND BY 20-49.1N 107-25.8E, 20-44.0N 107-25.8E, 20-44.0N 107-32.8E, 20-49.1N 107-32.0E. 2. CANCEL THIS MSG 170530Z MAR 17.
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2017-03-16 00:01Z | 2017-03-16 04:30Z | — | 4 h 29 |
| 2017-03-17 00:01Z | 2017-03-17 04:30Z | — | 4 h 29 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
This area · other warnings
27 within 180 nm since 2012 · 0 in the last 12 months · 0 in force now
12
15
20
24
- Three persons overboard from 19 meter F/V guifangyu 96822 in vicinity 21-03.00N 108-21.00E on 21 apr2024-04-22
- F/V qb 98603 ts reports crewman requiring medical assistance in 17-50.00N 107-45.00E at 102335Z jul2023-07-11
- F/V qb 98330 ts reports unconscious crewman requiring medical assistance in 17-49.00N 107-45.00E at 272330Z…2023-06-28
- F/V na 90361 ts reports crewman requiring medical assistance in 18-43.98N 106-19.11E at 200530Z dec2022-12-20
- F/V na 95052 ts reports crewman with serious head injury in vicinity 18-40N 106-50E at 151000Z feb2020-02-15
- F/V qng 98056 ts reports crewman with head injury requiring medical assistance in 18-00N 107-16E at 141030Z…2019-11-14
Season · when other warnings 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
34 other warnings in force · see all
Other
Everything the classifier did not place elsewhere. All current other warnings →
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.