Surveys
Underwater operations 19 apr thru 19 jun by dredge long chau and dredge long chau 02 within 1000 meters of…
South China Sea · Vietnam · HYDROPAC 1310/15
- issued
- 2015-04-18 13:12Z
- status
- cancelled 2015-06-20 00:01Z (archive)
- authority
- HAIPHONG RADIO 181228Z APR 15.
- sea
- South China Sea
- position
- 9.444, 106.521 · r 0.5 nm
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
SOUTH CHINA SEA. VIETNAM. DNC 11. 1. UNDERWATER OPERATIONS 19 APR THRU 19 JUN BY DREDGE LONG CHAU AND DREDGE LONG CHAU 02 WITHIN 1000 METERS OF 09-26-38.3N 106-31-14.5E. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 20 JUN 15.
This area · survey operations
20 within 180 nm since 2013 · 0 in the last 12 months · 0 in force now
13
15
20
- Survey operations in progress until 10 oct by M/V polarcus alima towing six four mile long cables in area…2020-09-09
- Survey operations in progress in area bound by 10-29.64N 107-49.46E, 10-29.64N 107-49.74E, 10-29.37N…2019-09-03
- Survey operations 20 thru 27 jun by M/V ptsc surveyor in 08-21.1N 108-42.5E2019-06-19
- Survey operations 02 thru 09 sep by M/V ptsc researcher in 08-33.98N 108-43.33E2018-08-31
- Salvage operations in progress until further notice in 11-07.40N 108-53.78E2018-05-15
- Survey operations 18 thru 26 oct by M/V discovery 01 in vicinity 09-45.38N 107-58.71E2017-10-14
Season · when survey operations 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
- Dangerous wreck in 10-22.31N 107-46.96EWrecks · 93.1 nm
- Sunken wreck exists in 10-22.31N 107-46.96EWrecks · 93.1 nm
Worldwide now
86 survey operations in force · see all
Surveys
Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →
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.