Surveys

Survey operations 12 thru 14 jul by M/V delta skipper in area bound by 10-06.03N 061-00.42W, 10-05.55N…

Caribbean Sea · NAVAREA IV 770/23

What this record establishes

Archived notice · 2023-07-15 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) · RONALD ALFRED 84/23 071900Z JUL 23.. Issued 2023-07-07 19:43Z. 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: Caribbean Sea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.

Current notices and reporting history in the Caribbean Sea →

issued: 2023-07-07 19:43Z
status: Archived notice
self-cancels: 2023-07-15 00:01Z
authority: RONALD ALFRED 84/23 071900Z JUL 23.
NAVAREA: NAVAREA IV
issued by: RONALD ALFRED
sea: Caribbean Sea
position: 10.097, -61.013
vessel: M/V DELTA SKIPPER · 10 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.
DNC 14.
1. SURVEY OPERATIONS 12 THRU 14 JUL BY
   M/V DELTA SKIPPER IN AREA BOUND BY
   10-06.03N 061-00.42W, 10-05.55N 061-00.43W,
   10-05.55N 061-00.98W, 10-06.04N 061-01.22W.
   500 METER BERTH REQUESTED.
2. CANCEL THIS MSG 150001Z JUL 23.

Reading this warning

DNC (Digital Nautical Chart): A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
Survey operations: A research or survey vessel is mapping the seabed or water column, often while towing equipment.
Area bound by: Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
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

171 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 · 2.8 nm
Trinidad and tobagoNav aids · 24.1 nm
Trinidad and tobagoCable ops · 27.5 nm
Trinidad and tobagoNav aids · 36.3 nm
Trinidad and tobagoWrecks · 39.6 nm
Trinidad and tobagoSurveys · 42.6 nm
Trinidad and tobagoNav aids · 56.7 nm
Trinidad and tobagoNav aids · 63.9 nm
Faro punta mejillones light 10-42.20N 062-08.40W discontinuedNav aids · 75.9 nm

Worldwide in the collected sources

55 survey operations listed in force · see all

Record snapshot 2026-09-27 07:55Z; 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.