Surveys

Survey operations in progress until 30 oct by M/V ramform tethys in area bound by 27-14.59S 047-06.48W,…

Western South Atlantic · Brazil · HYDROLANT 2388/23

issued: 2023-10-20 21:36Z
status: cancelled 2023-10-31 00:01Z (archive)
self-cancels: 2023-10-31 00:01Z
authority: NAVAREA V 467/23 202132Z OCT 23.
sea: South Atlantic Ocean
position: -27.529, -46.058
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL.
DNC 01.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 30 OCT
   BY M/V RAMFORM TETHYS IN AREA BOUND BY
   27-14.59S 047-06.48W, 26-49.19S 046-41.07W,
   26-44.55S 046-40.34W, 26-45.04S 044-58.45W,
   28-14.39S 044-58.26W, 28-14.34S 047-16.30W,
   27-28.07S 047-16.30W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 310001Z OCT 23.

This area · survey operations

215 within 180 nm since 1999 · 2 in the last 12 months · 2 in force now

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Survey operations in progress until 30 oct by M/V ramform tethys in area bound by 26-59.56S 046-39.27W,…cancelled by · 2023-10-23

Nearby now · within 120 nm

Scientific bouy, yellow, fl y 20 sec established in 27-24.38S 047-15.92WSurveys · 64.7 nm
Survey operations 10 thru 17 aug by M/V ramform titan towing 12 9000 meter long cables in area bound by…Surveys · 103.7 nm

Worldwide now

86 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.