Surveys

Underwater operations in progress by M/V siem TOPAZ/LAYN7 in area bound by 19-56.00S 113-13.20E, 19-53.5S…

Eastern Indian Ocean · Australia · HYDROPAC 76/26

issued
2026-01-10 00:05Z
status
cancelled 2026-04-17 16:00Z (dropped from snapshot)
sea
Indian Ocean
position
-19.913, 113.257
source
nga_wayback · first seen 2026-01-16 18:00Z

Original warning text

EASTERN INDIAN OCEAN.
AUSTRALIA.
DNC 04.
UNDERWATER OPERATIONS IN PROGRESS
BY M/V SIEM TOPAZ/LAYN7 IN AREA BOUND BY
19-56.00S 113-13.20E, 19-53.5S 113-13.20E,
19-53.50S 113-17.70E, 19-56.0S 113-17.70E.
TWO MILE BERTH REQUESTED.

This area · survey operations

185 within 180 nm since 2002 · 19 in the last 12 months · 5 in force now

02
05
10
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20
25
26

Season · when survey operations happen here

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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.