Surveys

Survey operations 10 mar thru 17 mar by M/V hai yang shi you 720 and M/V hai yang shi you 771 each towing…

Western South Atlantic · Brazil-southeast Coast · HYDROLANT 898/20

issued: 2020-03-09 00:24Z
status: cancelled 2020-03-17 03:57Z (archive)
authority: NAVAREA V 105/20 091217Z MAR 20.
sea: South Atlantic Ocean
position: -29.974, -41.728
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-SOUTHEAST COAST.
DNC 01.
1. SURVEY OPERATIONS 10 MAR THRU 17 MAR BY
   M/V HAI YANG SHI YOU 720 AND
   M/V HAI YANG SHI YOU 771 EACH TOWING TEN 12000
   METER LONG CABLES IN AREA BOUND BY
   27-35S 044-25W, 32-31S 044-29W,
   31-20S 036-44W, 26-40S 042-45W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 18 MAR 20.

This area · survey operations

13 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 in progress until 23 mar by M/V hai yang shi you 720, M/V agil I and M/V yang shi you 771…cancelled by · 2020-03-17

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.