Surveys

Nga chart 803 (1ST ed)

Arctic · Beaufort Sea · HYDROARC 128/11

issued: 2011-08-14 12:44Z
status: cancelled 2012-09-23 09:20Z (archive)
cancels: HYDROARC 9/10
authority: NAVAREA XVII 79/11 141131Z AUG 11.
position: 75.666, -146.647
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

ARCTIC.
BEAUFORT SEA.
NGA CHART 803 (1ST ED).
1. BOTTOM SCIENTIFIC MOORINGS, TOP FLOAT
   30 METERS, ESTABLISHED:
   A. BGOS-A IN 74-59.82N 149-58.95W.
   B. BGOS-B IN 78-00.40N 149-58.47W.
   C. BGOS-D IN 73-59.65N 139-59.04W.
2. CANCEL HYDROARC 9/10.

This area · survey operations

10 within 180 nm since 2006 · 0 in the last 12 months · 0 in force now

Scientific mooring TU-1 76-00.00N 160-10.00W removed2016-09-04
B. bgos-d 73-59.64N 139-58.95W, at depth 3504 meters2012-09-06
Scientific mooring, top float 50 meters, established in 77-59.58N 149-57.87W2010-07-03
Nga chart 803 (1ST ed)2010-07-02
Nga chart 801 (1ST ed)2010-07-02
Scientific mooring, top float 50 meters established in 75-00.198N 149-52.295W2006-10-21

Season · when survey operations happen here

month of issue, all years in the archive

Timeline

Nga chart 801 (1ST ed)cancels · 2010-07-02
Nga chart 801 (1ST ed)replaced · 2010-07-02
HYDROARC warnings in force 231000Z sep 12cancelled by · 2012-09-23

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

73 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.