Surveys

Survey operations 15 thru 18 nov by M/V sw diamond towing nine 225 meter long cables in area bound by…

Western South Atlantic · HYDROLANT 2923/22

issued: 2022-11-14 23:32Z
status: cancelled 2022-11-19 00:01Z (archive)
self-cancels: 2022-11-19 00:01Z
cancels: HYDROLANT 2902/22
authority: NAVAREA V 586/22 142221Z NOV 22.
sea: South Atlantic Ocean
position: -25.572, -42.858
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
DNC 01.
1. SURVEY OPERATIONS 15 THRU 18 NOV BY
   M/V SW DIAMOND TOWING NINE 225 METER
   LONG CABLES IN AREA BOUND BY
   25-39.84S 042-39.88W, 25-28.24S 043-02.89W,
   25-28.86S 043-02.96W, 25-40.37S 042-40.12W.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 2902/22.
3. CANCEL THIS MSG 190001Z NOV 22.

This area · survey operations

571 within 180 nm since 2000 · 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 14 nov by M/V sw diamond towing nine 225 meter long cables in area bound by 25-39.84S…cancels · 2022-11-13
Survey operations 14 nov by M/V sw diamond towing nine 225 meter long cables in area bound by 25-39.84S…replaced · 2022-11-13

Nearby now · within 120 nm

Hazardous operations in progress until 060400Z jun 27 in area bound by 24-39.87S 042-29.30W, 24-39.78S…Exercises · 58.6 nm
Hazardous operations 0800Z to 2100Z daily 18 thru 20 aug in area within ten miles of 25-06.00S 041-13.00WExercises · 93.5 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.