Surveys

Oceanographic operations 18 may thru 12 jun by M/V hesperides towing magenetometer along trackline between…

HYDROLANT 996/99

issued
1999-05-17 14:52Z
status
cancelled 1999-06-13 06:00Z (archive)
authority
NAVAREA II 133/99 171400Z MAY 99
sea
North Atlantic Ocean
position
28.307, -16.667
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. OCEANOGRAPHIC OPERATIONS 18 MAY THRU 12 JUN BY M/V HESPERIDES
   TOWING MAGENETOMETER ALONG TRACKLINE BETWEEN 29-12.4N 014-00W AND
   27-24.4N 019-20W. WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 13 JUN.

This area · survey operations

43 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now

99
00
05
10
15
20
24

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

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.