Surveys

Survey operations in progress until 30 jan by M/V ridley thomas along trackline joining 16-46.25N…

Caribbean Sea · NAVAREA IV 33/20

What this record establishes

Archived notice · 2020-01-31 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) · MONTSERRAT 092253Z JAN 20.. Issued 2020-01-10 00:16Z. 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 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 Caribbean Sea →

issued: 2020-01-10 00:16Z
status: Archived notice
authority: MONTSERRAT 092253Z JAN 20.
NAVAREA: NAVAREA IV
issued by: MONTSERRAT
sea: Caribbean Sea
position: 16.847, -62.178
vessel: M/V RIDLEY THOMAS · 28 messages
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN CARIBBEAN SEA.
MONTSERRAT.
1. SURVEY OPERATIONS IN PROGRESS UNTIL 30 JAN
   BY M/V RIDLEY THOMAS ALONG TRACKLINE JOINING
   16-46.25N 062-13.25W, 16-46.26N 062-13.25W,
   16-46.42N 062-13.52W, 16-46.44N 062-13.56W,
   16-46.54N 062-13.66W, 16-46.91N 062-13.89W,
   16-48.05N 062-13.79W, 16-50.32N 062-12.78W,
   16-50.63N 062-12.53W, 16-51.72N 062-10.16W,
   16-51.96N 062-09.70W, 16-54.04N 062-05.35W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 31 JAN 20.

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.

All warning terms →

Collected reports in this area · survey operations

11 within 180 nm since 1999 · 0 in the last 12 months · 0 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

Ilet du gosier light 16-11.90N 061-29.44W at reduced intensityOther · 55.5 nm
Pointe du vieux fort light 15-56.90N 061-42.46WNav aids · 60.4 nm
Kitts and nevisSpills · 83.6 nm
Anchoring prohibited until further notice in area bound by 18-13.60N 063-04.15W, 18-13.60N 063-04.70W,…Other · 97.3 nm

Worldwide in the collected sources

56 survey operations listed in force · see all

Record snapshot 2026-09-28 09:08Z; 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.