Surveys

Underwater operations during daylight hours in progress until 28 jan by M/V provence within one mile of…

HYDROLANT 253/00

issued
2000-01-24 10:05Z
status
cancelled 2000-01-29 06:00Z (archive)
cancels
HYDROLANT 252/00
authority
1. NAVAREA III 38/00 240936Z JAN 00; 2. MRCC ETEL 240918Z JAN 00
sea
Mediterranean Sea - Western Basin
position
42.982, 5.283 · r 1.0 nm
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER OPERATIONS DURING DAYLIGHT HOURS IN PROGRESS
   UNTIL 28 JAN BY M/V PROVENCE WITHIN ONE MILE OF
   42-58.9N 005-17.0E. WIDE BERTH REQUESTED.
2. CANCEL HYDROLANT 252/00(24,57,61), FALSE ALERT.
3. CANCEL THIS MSG 29 JAN.

This area · survey operations

132 within 180 nm since 1998 · 0 in the last 12 months · 0 in force now

98
00
05
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23

Season · when survey operations happen here

J
F
M
A
M
J
J
A
S
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N
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month of issue, all years in the archive

Timeline

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

83 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.