Surveys
Drilling operations in progress until 10 may by drilling vessel nanhai 4 within 2000 meters of 18-36.3N…
South China Sea · HYDROPAC 1225/11
- issued
- 2011-04-21 09:30Z
- status
- cancelled 2011-04-22 02:28Z (archive)
- authority
- NAVAREA XI 252/11 210733Z APR 11.
- sea
- South China Sea
- position
- 18.605, 110.673 · r 1.1 nm
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
SOUTH CHINA SEA. 1. DRILLING OPERATIONS IN PROGRESS UNTIL 10 MAY BY DRILLING VESSEL NANHAI 4 WITHIN 2000 METERS OF 18-36.3N 110-40.4E. 2. CANCEL THIS MSG 11 MAY.
This area · survey operations
10 within 180 nm since 2002 · 0 in the last 12 months · 0 in force now
02
05
10
15
19
- Survey operations 05 thru 24 apr by M/V fugro equinox in areas bound by: a. 16-26.11N 108-43.18E, 16-29.85N…2019-03-31
- Survey operations in progress until 29 oct by M/V equinox in 16-49.42N 108-24.84E2018-10-24
- Underwater operations 0001Z to 1200Z daily until 31 dec in area bound by 18-51.0N 108-14.0E, 18-50.2N…2014-12-22
- Underwater operations in progress until 30 apr in area bound by 17-59.7N 111-57.5E, 17-53.6N 112-01.4E,…2014-04-28
- Underwater operations in progress until 25 jun within two miles of 19-22-59N 112-05-27E2012-06-07
- Drilling operations in progress until 10 may by drilling vessel nanhai 4 within 2000 meters of 18-36.3N…2011-04-22
Season · when survey operations happen here
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F
M
A
M
J
J
A
S
O
N
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month of issue, all years in the archive
Timeline
Nearby now · within 120 nm
Nothing else in force within 120 nm.
Worldwide now
83 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.