Wrecks

20 meter shoal in area within seven miles of 11-18-38N 139-21-16E

Philippine Sea · HYDROPAC 415/19

What this record establishes

Archived notice · 2020-01-17 13:12Z

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) · NAVOCEANO 020625Z FEB 19.. Issued 2019-02-04 22:37Z. 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: Philippine Sea. The parsed report position is 11.311, 139.354 with a 7.0 nm radius. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Current notices and reporting history in the Philippine Sea →

issued: 2019-02-04 22:37Z
status: Archived notice
authority: NAVOCEANO 020625Z FEB 19.
issued by: NAVOCEANO
sea: Philippine Sea
position: 11.311, 139.354 · r 7.0 nm
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

PHILIPPINE SEA.
DNC 12.
CHART 81002.
20 METER SHOAL IN AREA WITHIN SEVEN MILES
OF 11-18-38N 139-21-16E.

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.
Chart reference: The number of the nautical chart on which the reported position lies.
Shoal / reported depth: Water shallower than the chart shows — a newly found shoal, a reported depth, or less water than charted.
Within a radius of: A circular area — every position within a stated distance of a point.
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.

All warning terms →

Collected reports in this area · wrecks & obstructions

2 within 180 nm since 2010 · 0 in the last 12 months · 0 listed in force now

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.

Nga chart 81002 (6TH ed)2010-11-29

Month of issue in the collected archive

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

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

38 wrecks & obstructions listed in force · see all

Record snapshot 2026-10-03 19:50Z; source collection times vary.

Wrecks

Dangerous wrecks, shoals and submerged obstructions. All current wrecks & obstructions →

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.