Trwyn du point light 53-18.8N 004-02.5W unreliable
Irish Sea and St. George's Channel · HYDROLANT 1/16
What this record establishes
Archived notice · 2016-01-03 22:29Z
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 1524/15 312040Z DEC 15 - NAVAREA V SAR 171/15 010014Z JAN 16.. Issued 2016-01-01 01:50Z. 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 53.313, -4.042. 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
- M/V keila, four persons on board, disabled and adrift in 26-45.87S 048-38.00Wcancelled by this notice
- Cancel HYDROLANT 1/16 and this msg, aid restoredlater cancellation notice
Current notices and reporting history in the Irish Sea and St. George's Channel →
- issued
- 2016-01-01 01:50Z
- status
- Archived notice
- authority
- WZ 1524/15 312040Z DEC 15 - NAVAREA V SAR 171/15 010014Z JAN 16.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- WZ
- sea
- Irish Sea and St. George's Channel
- position
- 53.313, -4.042
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WALES-NORTHWEST COAST. DNC 20. CHART 36025. 1. TRWYN DU POINT LIGHT 53-18.8N 004-02.5W UNRELIABLE. 2. CANCEL HYDROLANT 3216/15(24).
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.
- 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.
- Inoperative / unreliable / off air
- An aid or radio service is not working as charted or published.
- 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 · aids-to-navigation notices
1738 within 180 nm since 1997 · 4 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.
- Bull point light in 51-12.00N 004-12.10W unreliable2026-09-24
- Roker pier light 54-55.30N 001-21.20W unreliable2026-09-05
- Mew island light 54-41.90N 005-30.80W unreliable2026-08-11
- Mf dsc and r/t services off air at: a. bawdsey 51-59.60N 001-24.50E2026-08-01
- NAVTEX station portpatrick (o) 54-50.63N 005-07.46W off air 020800Z to 031600Z oct2024-10-01
- Balbriggan island light 53-36.80N 006-10.80W unreliable2024-09-25
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
147 aids-to-navigation notices listed in force · see all
Record snapshot 2026-09-24 17:20Z; source collection times vary.
Nav aids
Lights extinguished, buoys off station, RACON/NAVTEX outages. All current aids-to-navigation notices →
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.