Surveys
Underwater operations 240001Z to 310001Z may by M/V zvezdochka in areas between: a. 25-39.5N 25-42.5N and…
North Atlantic · HYDROLANT 860/11
- issued
- 2011-05-21 22:04Z
- status
- cancelled 2011-05-31 01:01Z (archive)
- self-cancels
- 2011-05-31 01:01Z
- authority
- NAVAREA II 153/11 212005Z MAY 11.
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
NORTH ATLANTIC. 1. UNDERWATER OPERATIONS 240001Z TO 310001Z MAY BY M/V ZVEZDOCHKA IN AREAS BETWEEN: A. 25-39.5N 25-42.5N AND 034-31.0W 034-34.5W. B. 23-39.0N 23-42.0N AND 034-20.0W 034-23.5W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 310101Z MAY.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2011-05-24 00:01Z | 2011-05-31 00:01Z | — | 168 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
Nearby now · within 120 nm
Nothing else in force within 120 nm.
Worldwide now
84 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.