Cable ops

Underwater cable operations by M/V wave alert towing 1500 meter long cable: a. 180500Z to 191700Z apr in…

HYDROLANT 1178/01

issued: 2001-04-17 07:14Z
status: cancelled 2001-04-21 18:00Z (archive)
self-cancels: 2001-04-21 18:00Z
cancels: HYDROLANT 1054/01
authority: NAVAREA V 688/01 AOR-E EGC #794 170616Z APR 01; NAVCEN ALEXANDRIA 162318Z APR 01; NAVAREA V 687/01 170616Z APR; NAVAREA II 151/01 170635Z APR 01
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER CABLE OPERATIONS BY M/V WAVE ALERT TOWING 1500 METER
   LONG CABLE:
   A. 180500Z TO 191700Z APR IN AREA BETWEEN 08-18.0S 08-22.0S
      AND 034-47.8W 034-45.8W.
   B. 200500Z TO 211700Z APR IN AREA BETWEEN 08-18.5S 08-22.5S
      AND 034-38.5W 034-36.4W.
2. CANCEL HYDROLANT 1054/01(GEN), 1102/01 AND 1147/01(51).
3. CANCEL THIS MSG 211800Z APR.

Activity windows · 2 in this warning

opens (UTC)	closes (UTC)	local	length
2001-04-18 05:00Z	2001-04-19 17:00Z	—	36 h
2001-04-20 05:00Z	2001-04-21 17:00Z	—	36 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

Timeline

Prn 17 unusable 061800Z to 201800Z aprcancels · 2001-04-03
Prn 17 unusable 061800Z to 201800Z aprreplaced · 2001-04-03
Survey operations in progress until 26 apr by M/V l'espoir along trackline joining 32-12S 051-58W, 31-53S…replaced · 2001-04-09
Cable operations in progress until further notice by cableship leon thevenin along trackline joining…replaced · 2001-04-13

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

40 cable & pipeline work in force · see all

Cable ops

Cable laying, pipeline and seismic operations. All current cable & pipeline work →

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.