index

HYDROPAC messages in force 280800Z may 99

HYDROPAC 470/99

issued: 1999-05-28 09:30Z
status: cancelled 1999-06-04 08:50Z (archive)
cancels: HYDROPAC 286/99 HYDROPAC 388/99 HYDROPAC 394/99 HYDROPAC 444/99 HYDROPAC 461/99
authority: GIMM, MHQAUST-280615Z MAY 99 & NAVAREA XIV-242330Z MAY 99
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROPAC MESSAGES IN FORCE 280800Z MAY 99. ONLY THOSE
   MESSAGES ISSUED DURING THE LAST SIX WEEKS ARE LISTED HEREIN.
   1999 SERIES: 324(62), 332(93), 334(74), 341(GEN), 350(74),
   354(93), 357(81), 375(62), 383(94), 393(22), 401(71),
   412(93), 428(74), 436(19,97), 437(62), 441(97), 442(74),
   448(81), 451(61), 454(81), 455(61), 464(94), 465(94),
   466(74), 467(94), 468(29), 469(71).
2. THE SUMMARY OF ALL HYDROPAC MESSAGES IN FORCE AS OF 11 DEC 98
   IS GIVEN IN SEC III OF NM 52/98. WARNINGS ISSUED DURING THE
   SUBSEQUENT QUARTERS ARE SUMMARIZED IN NM 13/99.
3. CANCEL HYDROPAC 286/99, 388/99, 394/99, 444/99, 461/99.

Timeline

Distress signal received in vicinity 26-57N 165-10E at 120530Z aprreplaced · 1999-04-12
Seismic survey in progress until further notice by M/V ramform towing three mile long cables in area bound…replaced · 1999-05-08
Underwater cable operations in progress until further notice by cableship pacific guardian in area between…replaced · 1999-05-10
HYDROPAC messages in force 210800Z may 99replaced · 1999-05-21
HYDROPAC messages in force 040800Z jun 99cancelled by · 1999-06-04

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

8 index warnings in force

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.