Surveys

Survey operations in progress until 280259Z dec in area between 21-11S 21-23S and 039-53W 040-07W

HYDROLANT 2051/04

issued: 2004-12-25 05:47Z
status: cancelled 2004-12-28 03:59Z (archive)
self-cancels: 2004-12-28 03:59Z
authority: NAVAREA V 991/04 250402Z DEC 04.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. SURVEY OPERATIONS IN PROGRESS UNTIL 280259Z DEC IN AREA
   BETWEEN 21-11S 21-23S AND 039-53W 040-07W. FOUR MILE 
   BERTH REQUESTED.
2. CANCEL THIS MSG 280359Z DEC.

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.