Surveys

Survey operations 01 thru 08 apr by M/V pgs apollo towing ten 8100 meter long cables in area bound by…

South China Sea · Taiwan-southwest Coast · HYDROPAC 1134/17

issued: 2017-03-31 08:09Z
status: cancelled 2017-04-09 00:01Z (archive)
authority: NAVAREA XI 212/17 310801Z MAR 17.
sea: South China Sea
position: 21.549, 118.914
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

SOUTH CHINA SEA.
TAIWAN-SOUTHWEST COAST.
DNC 23.
1. SURVEY OPERATIONS 01 THRU 08 APR BY
   M/V PGS APOLLO TOWING TEN 8100 METER
   LONG CABLES IN AREA BOUND BY
   22-10.1N 119-31.5E, 22-01.9N 119-39.4E,
   20-55.6N 118-17.9E, 21-04.2N 118-10.5E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 09 APR 17.

This area · survey operations

33 within 180 nm since 2012 · 0 in the last 12 months · 0 in force now

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Survey operations in progress until 13 apr by M/V pgs apollo towing ten 8100 meter long cables in area bound…cancelled by · 2017-04-08

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

85 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.