Surveys

Underwater operations are underway in the eastern Indian Ocean by M/V Seven Sisters; a one-mile berth is requested.

Eastern Indian Ocean · HYDROPAC 123/26

issued
2026-01-16 04:12Z
status
cancelled 2026-08-17 00:00Z (dropped from snapshot)
sea
Indian Ocean
position
-19.851, 113.174
source
nga_wayback · first seen 2026-01-16 18:00Z

Original warning text

EASTERN INDIAN OCEAN.
DNC 04.
UNDERWATER OPERATIONS IN PROGRESS
UNTIL FURTHER NOTICE BY
M/V SEVEN SISTERS IN AREA BOUND BY
19-44.30S 113-04.05E, 19-57.83S 113-04.05E,
19-57.83S 113-16.78E, 19-44.30S 113-16.78E.
ONE MILE BERTH REQUESTED.

This area · survey operations

178 within 180 nm since 2002 · 17 in the last 12 months · 3 in force now

02
05
10
15
20
25
26

Season · when survey operations happen here

J
F
M
A
M
J
J
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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.