Surveys

Underwater operations: a. in progress until 312359Z dec in area between 09-00S 13-00S and 070-00E 073-00E

HYDROPAC 1697/03

issued: 2003-10-01 06:50Z
status: cancelled 2004-01-01 00:59Z (archive)
self-cancels: 2004-01-01 00:59Z
cancels: HYDROPAC 1659/03
authority: PATRECONNING ONE DET DIEGO GARCIA 180915Z SEP 03; CTF 74 301109Z SEP 03
sea: Indian Ocean
position: -4.500, 75.500 · r 60.0 nm
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER OPERATIONS:
   A. IN PROGRESS UNTIL 312359Z DEC
      IN AREA BETWEEN
      09-00S 13-00S AND 070-00E 073-00E.
   B. 020800Z TO 050800Z OCT
      WITHIN 60 MILES OF 04-30S 075-30E.
2. CANCEL HYDROPAC 1659/03.
3. CANCEL THIS MSG 010059Z JAN 04.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2003-10-02 08:00Z	2003-10-05 08:00Z	—	72 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

This area · survey operations

2 within 180 nm since 2003 · 0 in the last 12 months · 0 in force now

Underwater operations 010001Z oct to 312359Z dec: a. in area between 09-00S 13-00S and 070-00E 073-00E2003-09-26

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Underwater operations 010001Z oct to 312359Z dec: a. in area between 09-00S 13-00S and 070-00E 073-00Ecancels · 2003-09-26
Underwater operations 010001Z oct to 312359Z dec: a. in area between 09-00S 13-00S and 070-00E 073-00Ereplaced · 2003-09-26

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

84 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.