Surveys
Underwater operations 300600Z to 301800Z mar within 1000 yards of 44-02-30N 009-48-00E
HYDROLANT 611/99
- issued
- 1999-03-29 22:48Z
- status
- cancelled 1999-03-30 00:00Z (archive)
- self-cancels
- 1999-03-30 19:00Z
- sea
- Ligurian Sea
- position
- 44.042, 9.800 · r 0.5 nm
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER OPERATIONS 300600Z TO 301800Z MAR WITHIN 1000 YARDS OF 44-02-30N 009-48-00E. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 301900Z MAR.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 1999-03-30 06:00Z | 1999-03-30 18:00Z | — | 12 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
173 within 180 nm since 1998 · 0 in the last 12 months · 0 in force now
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23
- Survey operations 22 jul thru 13 aug by M/V tethys II, M/V l`europe, and M/V sagitta III in area bound by…2023-07-20
- Survey operations in progress until 19 jul by M/V five in area bound by 43-49.26N 009-54.46E, 44-09.71N…2023-07-18
- Survey operations in progress until 30 mar by M/V ocean link along trackling joining 43-14.09N 007-46.66E,…2023-03-17
- Survey operations 02 thru 17 feb by M/V tethys II, M/V l europe and M/V sagitta III in area bound by…2023-01-30
- Survey operations 07 thru 15 jul by M/V thetys II, M/V l'europe and M/V saggitta III in area bound by…2022-07-05
- Survey operations 27 may thru 06 jun by M/V thetys II, M/V l`europe and M/V saggitta III in area bound by…2022-05-26
Season · when survey operations happen here
J
F
M
A
M
J
J
A
S
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N
D
month of issue, all years in the archive
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.