Surveys

Survey operations by M/V certamen towing equipment: a. in progress until 142000Z may along trackline between…

HYDROLANT 827/04

issued
2004-05-14 10:20Z
status
cancelled 2004-05-21 21:00Z (archive)
self-cancels
2004-05-21 21:00Z
authority
MARISICILIA 171/04 131533B MAY 04
sea
Mediterranean Sea - Western Basin
position
38.065, 10.027
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. SURVEY OPERATIONS BY M/V CERTAMEN TOWING EQUIPMENT:
   A. IN PROGRESS UNTIL 142000Z MAY ALONG TRACKLINE BETWEEN
      37-53.00N 011-49.00E AND 37-52.85N 011-25.75E.
   B. 142200Z TO 162200Z MAY ALONG TRACKLINE BETWEEN
      37-53.00N 011-49.00E AND 38-08.66N 011-56.44E.
   C. 170400Z TO 212000Z MAY ALONG TRACKLINE BETWEEN
      38-03.00N 010-25.00E AND 38-10.12N 008-27.61E.
   ONE MILE BERTH REQUESTED.
2. CANCEL THIS MSG 212100Z MAY.

Activity windows · 2 in this warning

opens (UTC)closes (UTC)locallength
2004-05-14 22:00Z2004-05-16 22:00Z48 h
2004-05-17 04:00Z2004-05-21 20:00Z112 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

195 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

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.