Surveys

Underwater operations by vessels Atlantis and Alvin near Cayman Islands from August 2 to August 18, within 100 miles of 18°23'N 081°47'W, wide berth requested.

Caribbean Sea · Cayman Islands · NAVAREA IV 743/26

issued: 2026-07-31 19:22Z
status: in force
self-cancels: 2026-08-18 09:00Z
position: 18.383, -81.783 · r 100.0 nm
source: nga_inforce · first seen 2026-08-17 13:41Z

Original warning text

CARIBBEAN SEA.
CAYMAN ISLANDS.
1. UNDERWATER OPERATIONS 020800Z THRU
   180800Z AUG BY M/V ATLANTIS AND
   SUBMERSIBLE ALVIN IN AREA WITHIN
   100 MILES OF 18-23.00N 081-47.00W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 180900Z AUG 26.

Conditions at the position · now

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Open-Meteo Marine / Open-Meteo · GEBCO 2020 · model data at the centroid, not an observation

This area · survey operations

2 within 180 nm since 2022 · 1 in the last 12 months · 1 in force now

Underwater operations 052000Z to 172000Z aug by submersible alvin and vessel atlantis in area within 60…2022-08-02

Season · when survey operations happen here

month of issue, all years in the archive

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

73 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.