Surveys

Salvage operations in progress until further notice vicinity cape sierra leone

HYDROLANT 2988/01

issued: 2001-11-22 16:15Z
status: cancelled 2001-11-30 12:40Z (archive)
authority: NAVAREA II 415/01 221220Z NOV
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

CHART 51621 (9TH ED).
SALVAGE OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE
VICINITY CAPE SIERRA LEONE. WIDE BERTH REQUESTED.

Timeline

HYDROLANT messages in force 301200Z nov 2001cancelled by · 2001-11-30

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

73 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.