Surveys

Underwater operations 040001Z to 062059Z sep by M/V georges petit and M/V thetys II in area bound by 42-47N…

HYDROLANT 1873/99

issued
1999-09-03 09:40Z
status
cancelled 1999-09-06 21:59Z (archive)
self-cancels
1999-09-06 21:59Z
authority
NAVAREA III 377/99 030736Z SEP 99
sea
Mediterranean Sea - Western Basin
position
42.605, 5.953
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER OPERATIONS 040001Z TO 062059Z SEP BY
   M/V GEORGES PETIT AND M/V THETYS II IN AREA BOUND
   BY 42-47N 005-50E, 42-47N 006-04E, 42-25N 006-04E,
   42-25N 005-54E, 42-30N 005-50E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 062159Z SEP.

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
1999-09-04 00:01Z1999-09-06 20:59Z68 h 58

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

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

98
00
05
10
15
20
23

Season · when survey operations happen here

J
F
M
A
M
J
J
A
S
O
N
D

month of issue, all years in the archive

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.