Surveys
Underwater operations 0630Z to 1830Z daily 08 thru 15 sep by 5.5 meter submersible in area between 50-16N…
English Channel · England-south Coast · HYDROLANT 2756/17
- issued
- 2017-09-08 08:08Z
- status
- cancelled 2017-09-15 19:30Z (archive)
- self-cancels
- 2017-09-15 19:30Z
- authority
- WZ 1104/17 080630Z SEP 17.
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
ENGLISH CHANNEL. ENGLAND-SOUTH COAST. DNC 20. 1. UNDERWATER OPERATIONS 0630Z TO 1830Z DAILY 08 THRU 15 SEP BY 5.5 METER SUBMERSIBLE IN AREA BETWEEN 50-16N 50-15N AND 004-24W 004-22W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 151930Z SEP 17.
Activity windows · 8 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2017-09-08 06:30Z | 2017-09-08 18:30Z | — | 12 h |
| 2017-09-09 06:30Z | 2017-09-09 18:30Z | — | 12 h |
| 2017-09-10 06:30Z | 2017-09-10 18:30Z | — | 12 h |
| 2017-09-11 06:30Z | 2017-09-11 18:30Z | — | 12 h |
| 2017-09-12 06:30Z | 2017-09-12 18:30Z | — | 12 h |
| 2017-09-13 06:30Z | 2017-09-13 18:30Z | — | 12 h |
| 2017-09-14 06:30Z | 2017-09-14 18:30Z | — | 12 h |
| 2017-09-15 06:30Z | 2017-09-15 18:30Z | — | 12 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.