Surveys

Nga chart 16003 (16TH ed)

Alaska-north Coast · Chukchi Sea · HYDROARC 203/11

issued
2011-10-11 09:04Z
status
cancelled 2012-10-02 00:00Z (archive)
authority
USCGC HEALY 110758Z OCT 11.
sea
Arctic Ocean
position
72.799, -158.399
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

ALASKA-NORTH COAST.
CHUKCHI SEA.
NGA CHART 16003 (16TH ED).
1. SCIENTIFIC MOORING, HARP-C,
   TOP FLOAT 323 METERS,
   ESTABLISHED UNTIL 01 OCT 12
   IN 72-47.944N 158-23.928W.
2. CANCEL THIS MSG 02 OCT 2012.

This area · survey operations

64 within 180 nm since 2004 · 0 in the last 12 months · 1 in force now

04
05
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24

Season · when survey operations happen here

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A
M
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month of issue, all years in the archive

Nearby now · 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.