Surveys

Underwater operations 0900Z to 2100Z daily 14 thru 19 aug by M/V proboat, M/V sion and M/V aquitania g in…

Brazil-southeast Coast · HYDROLANT 2056/16

issued: 2016-08-13 09:40Z
status: cancelled 2016-08-19 22:00Z (archive)
self-cancels: 2016-08-19 22:00Z
cancels: HYDROLANT 2002/16 HYDROLANT 2038/16
authority: NAVAREA V E 655/16 130128Z AUG 16 - NAVAREA V SAR 116/16 130148Z AUG 16 - NAVAREA V SAR 117/16 130148Z AUG 16.
sea: South Atlantic Ocean
position: -20.313, -40.210
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

BRAZIL-SOUTHEAST COAST.
DNC 01.
1. UNDERWATER OPERATIONS 0900Z TO 2100Z DAILY
   14 THRU 19 AUG BY M/V PROBOAT, M/V SION AND
   M/V AQUITANIA G IN 20-18.80S 040-12.62W.
2. CANCEL HYDROLANT 2002/16, 2038/16.
3. CANCEL THIS MSG 192200Z AUG 16.

Activity windows · 6 in this warning

opens (UTC)	closes (UTC)	local	length
2016-08-14 09:00Z	2016-08-14 21:00Z	—	12 h
2016-08-15 09:00Z	2016-08-15 21:00Z	—	12 h
2016-08-16 09:00Z	2016-08-16 21:00Z	—	12 h
2016-08-17 09:00Z	2016-08-17 21:00Z	—	12 h
2016-08-18 09:00Z	2016-08-18 21:00Z	—	12 h
2016-08-19 09:00Z	2016-08-19 21:00Z	—	12 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

This area · survey operations

554 within 180 nm since 2000 · 24 in the last 12 months · 15 in force now

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Man overboard from vessel in 23-00S 043-44Wcancels · 2016-08-08
Vessel beira mar XXV, three persons on board, taking on water in 24-48.10S 042-42.22W on 11 augcancels · 2016-08-11
Man overboard from vessel in 23-00S 043-44Wreplaced · 2016-08-08
Vessel beira mar XXV, three persons on board, taking on water in 24-48.10S 042-42.22W on 11 augreplaced · 2016-08-11

Nearby now · within 120 nm

Underwater operations 1100Z to 2100Z daily 15 thru 29 aug by M/V comando b and M/V rosco banyan in 20-23.37S…Surveys · 4.9 nm
Underwater operations 0800Z to 1800Z daily 02 thru 16 aug by M/V comando b and M/V royal topaz in 20-21.62S…Surveys · 5.2 nm
Underwater operations in progress until 27 aug by M/V navios felix and M/V comando b in 20-22.12S 040-08.38WSurveys · 5.2 nm
Underwater operations 0800Z to 1800Z daily 11 thru 25 aug by M/V comando b and M/V faneromeni in 20-23.00S…Surveys · 5.4 nm
Underwater operations 1100Z to 2100Z daily 12 thru 21 aug by M/V comando b and M/V faneromeni in 20-23.67S…Surveys · 5.7 nm
Underwater operations 1100Z to 2100Z daily 13 thru 22 aug by M/V comando b and M/V am kirti in 20-23.90S…Surveys · 5.8 nm
Underwater operations 0800Z to 1800Z daily 08 thru 22 aug by M/V marsanne and M/V comando b in 20-23.57S…Surveys · 5.9 nm
Foul ground until 06 dec 27 in area bound by 19-53.87S 039-59.68W, 19-54.15S 039-59.27W, 19-53.08S…Wrecks · 28.4 nm
Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 73.5 nm
Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 80.8 nm
Survey operations in progress until 312200Z aug in area bound by 21-36.17S 041-00.00W, 21-36.05S 040-37.59W,…Surveys · 97.5 nm
Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 100.8 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.