Isle of man
Bristol Channel · HYDROLANT 757/15
What this record establishes
Archived notice · 2015-03-31 13:21Z
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 401/15 310140Z MAR 15.. Issued 2015-03-31 09:46Z. 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
- Bristol Channel. 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
- Isle of manlater cancellation notice
Current notices and reporting history in the Bristol Channel →
- issued
- 2015-03-31 09:46Z
- status
- Archived notice
- authority
- WZ 401/15 310140Z MAR 15.
- issued by
- WZ
- sea
- Bristol Channel
- position
- 51.644, -3.572
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
ENGLAND-SOUTH COAST. ENGLAND-WEST COAST. ISLE OF MAN. RADIO SERVICES. DNC 19, DNC 20. MF DSC SERVICES UNRELIABLE IN AREA BOUND BY 50-46N 000-02E, 49-55N 006-18W, 54-15N 004-27W.
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.
- DSC (Digital Selective Calling)
- The digital radio alert built into modern marine radios — one button sends a distress alert with the vessel's identity and position.
- Inoperative / unreliable / off air
- An aid or radio service is not working as charted or published.
- 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.
Collected reports in this area · aids-to-navigation notices
1739 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
- Newhaven breakwater, head light 50-46.50N 000-03.50E unlit2026-09-06
- Fog signal at dungeness light 50-54.80N 000-58.60E inoperative2026-08-27
- Fowey light 50-19.60N 004-38.90W unreliable2026-07-27
- Balbriggan island light 53-36.80N 006-10.80W unreliable2024-09-25
- Mf r/t and dsc services at scillies site 49-55.70N 006-18.20W off air2024-09-05
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
136 aids-to-navigation notices listed in force · see all
Record snapshot 2026-10-02 13:32Z; 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.