Nga chart 36025(1ST ed)
Irish Sea and St. George's Channel · HYDROLANT 17/11
What this record establishes
Archived notice · 2011-01-18 14:50Z
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) · WZ 10/11 041246Z JAN 11; - WZ 14/11 041547Z JAN 11 - WZ 11/11 041404Z JAN 11.. Issued 2011-01-04 20:08Z. 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
- Irish Sea and St. George's Channel. The parsed report position is 54.025, -3.197. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Nga chart 36049 (1ST ed)cancelled by this notice
- Nga chart 37015 (1ST ed)cancelled by this notice
- Cancel HYDROLANT 17/11 and this msg, aid restoredlater cancellation notice
Current notices and reporting history in the Irish Sea and St. George's Channel →
- issued
- 2011-01-04 20:08Z
- status
- Archived notice
- authority
- WZ 10/11 041246Z JAN 11; - WZ 14/11 041547Z JAN 11 - WZ 11/11 041404Z JAN 11.
- issued by
- WZ
- sea
- Irish Sea and St. George's Channel
- position
- 54.025, -3.197
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
ENGLAND-WEST COAST. NGA CHART 36025(1ST ED). 1. HALFWAY SHOAL LIGHT 54-01.5N 003-11.8W UNLIT. 2. CANCEL HYDROLANT 2512/10(36,37), 9/11(37).
Reading this warning
- 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.
- 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.
- Unlit / extinguished
- A light, buoy or structure that is not showing its charted light.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROLANT
- The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
Collected reports in this area · wrecks & obstructions
109 within 180 nm since 1998 · 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.
- Dangerous wreck in 54-12.68N 004-16.44W2024-05-02
- Dangerous wreck in 54-12.68N 004-16.44W2024-03-21
- Dangerous wreck in 54-12.68N 004-16.44W2024-03-21
- Dangerous wreck in 54-12.70N 004-16.40W2024-02-08
- Sheringham shoal wind farm turbines unlit in: a. 53-10.40N 001-04.80E2023-03-02
- Dangerous wreck, least depth 19.3 meters, in 56-38.80N 002-26.20W2022-06-10
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 2026-10-02 13:10Z; 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.