Surveys

Trinidad and tobago

North Atlantic Ocean · NAVAREA IV 1247/23

What this record establishes

Archived notice · 2023-11-16 00:01Z

This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.

Source and dates: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · TRINIDAD AND TOBAGO 138/23 271930Z OCT 23.. Issued 2023-10-27 21:38Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered: North Atlantic Ocean. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.

Current notices and reporting history in the North Atlantic Ocean →

issued: 2023-10-27 21:38Z
status: Archived notice
self-cancels: 2023-11-16 00:01Z
authority: TRINIDAD AND TOBAGO 138/23 271930Z OCT 23.
NAVAREA: NAVAREA IV
issued by: TRINIDAD AND TOBAGO
sea: North Atlantic Ocean
position: 11.420, -60.007
vessel: M/V PROTEUS · 17 messages
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN CARIBBEAN SEA.
WESTERN NORTH ATLANTIC.
TRINIDAD AND TOBAGO.
1. SURVEY OPERATIONS 01 THRU 15 NOV
   BY M/V PROTEUS ALONG TRACKLINE JOINING
   10-59.80N 060-25.11W, 11-09.36N 060-29.77W,
   11-10.11N 060-28.57W, 11-10.75N 060-27.76W,
   11-11.54N 060-27.04W, 11-12.96N 060-26.06W,
   11-13.84N 060-25.62W, 11-14.79N 060-25.34W,
   11-15.66N 060-25.22W, 11-17.28N 060-25.01W,
   11-22.67N 060-18.32W, 11-37.65N 059-31.54W,
   11-37.59N 059-26.24W, 11-33.33N 059-21.25W,
   11-32.05N 059-21.38W.
   500 METER BERTH REQUESTED.
2. CANCEL THIS MSG 160001Z NOV 23.

Reading this warning

Survey operations: A research or survey vessel is mapping the seabed or water column, often while towing equipment.
Track line joining: Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
Position (degrees and minutes): How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
Wide berth requested: Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
CANCEL THIS MSG: The warning's own expiry: a line telling the reader when the message cancels itself.
Date-time group (DTG): A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.

All warning terms →

Collected reports in this area · survey operations

181 within 180 nm since 2002 · 8 in the last 12 months · 1 listed in force now

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Month of issue in the collected archive

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

Trinidad and tobagoNav aids · 52 nm
Trinidad and tobagoSurveys · 81 nm
Trinidad and tobagoNav aids · 83.8 nm
Trinidad and tobagoCable ops · 94.3 nm
Trinidad and tobagoNav aids · 96.4 nm
Trinidad and tobagoWrecks · 108 nm
GrenadinesWrecks · 108.4 nm
Trinidad and tobagoNav aids · 111.8 nm

Worldwide in the collected sources

54 survey operations listed in force · see all

Record snapshot 2026-10-02 12:43Z; source collection times vary.

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.