Surveys

Survey operations in progress until further notice in areas bound by: a. 25-09.89N 052-52.36E, 25-09.81N…

Persian Gulf · HYDROPAC 3576/23

What this record establishes

Archived notice · 2023-12-19 16:30Z

This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.

Source and dates
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · NAVAREA IX 427/23 131559Z NOV 23.. Issued 2023-11-13 17:17Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
Persian Gulf. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Persian Gulf →

issued
2023-11-13 17:17Z
status
Archived notice
authority
NAVAREA IX 427/23 131559Z NOV 23.
NAVAREA
NAVAREA IX · named as the source of this relay
sea
Persian Gulf
position
25.164, 52.871
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

PERSIAN GULF.
U.A.E.
DNC 10.
SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE
IN AREAS BOUND BY:
A. 25-09.89N 052-52.36E, 25-09.81N 052-52.30E,
   25-09.90N 052-51.92E.
B. 25-07.98N 052-51.55E, 25-07.60N 052-51.52E,
   25-09.60N 052-51.47E.
WIDE BERTH REQUESTED.

Reading this warning

DNC (Digital Nautical Chart)
A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
Survey operations
A research or survey vessel is mapping the seabed or water column, often while towing equipment.
Until further notice
The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
Area bound by
Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
Position (degrees and minutes)
How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
Wide berth requested
Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.

All warning terms →

Collected reports in this area · survey operations

458 within 180 nm since 1999 · 6 in the last 12 months · 3 listed in force now

99
00
05
10
15
20
25
26

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Month of issue in the collected archive

J
F
M
A
M
J
J
A
S
O
N
D

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

Worldwide in the collected sources

54 survey operations listed in force · see all

Record snapshot 2026-09-29 23:50Z; source collection times vary.

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.