Surveys

Survey operations 110400Z to 180500Z nov by M/V atlantis with submersible alvin in area within 110 miles of…

Western North Atlantic · Puerto Rico · NAVAREA IV 1020/21

issued: 2021-11-09 13:24Z
status: cancelled 2021-11-18 06:00Z (archive)
self-cancels: 2021-11-18 06:00Z
cancels: NAVAREA IV 990/21
authority: NATIONAL DEEP SUBMERGENCE FACILITY 091318Z NOV 21.
sea: North Atlantic Ocean
position: 19.633, -66.050 · r 110.0 nm
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

WESTERN NORTH ATLANTIC.
PUERTO RICO.
1. SURVEY OPERATIONS 110400Z TO 180500Z NOV
   BY M/V ATLANTIS WITH SUBMERSIBLE ALVIN
   IN AREA WITHIN 110 MILES OF 19-38N 066-03W.
   WIDE BERTH REQUESTED.
2. CANCEL NAVAREA IV 990/21.
3. CANCEL THIS MSG 180600Z NOV 21.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2021-11-11 04:00Z	2021-11-18 05:00Z	—	169 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

6 within 180 nm since 2015 · 0 in the last 12 months · 0 in force now

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Survey operations 050400Z thru 170500Z nov by M/V atlantis with submersible alvin in areas within: a. 60…cancels · 2021-10-30
Survey operations 050400Z thru 170500Z nov by M/V atlantis with submersible alvin in areas within: a. 60…replaced · 2021-10-30

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

86 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.