Nga chart 55047(8TH ed)
Sea of Marmara · HYDROLANT 431/08
What this record establishes
Archived notice · 2008-05-03 09:06Z
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 III 143/08 040800 MAR 08; PVWA BEASLEY 12 MAR 08.. Issued 2008-03-12 12:28Z. 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
- Sea of Marmara. 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
- Lowestoft light 52-29.2N 001-45.5E missingcancelled by this notice
Current notices and reporting history in the Sea of Marmara →
- issued
- 2008-03-12 12:28Z
- status
- Archived notice
- authority
- NAVAREA III 143/08 040800 MAR 08; PVWA BEASLEY 12 MAR 08.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Sea of Marmara
- position
- 41.027, 29.013
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
NGA CHART 55047(8TH ED). 1. NAVIGATION PROHIBITED UNTIL FURTHER NOTICE IN AREA BOUND BY 41-01.63N 029-00.72E, 41-01.65N 029-00.82E, 41-01.62N 029-00.83E, 41-01.60N 029-00.73E. 2. CANCEL HYDROLANT 425/08(37).
Reading this warning
- Chart reference
- The number of the nautical chart on which the reported position lies.
- Navigation prohibited
- Ships may not enter or pass through the area, or a port is closed to traffic.
- 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.
- 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 · restricted areas & port closures
3 within 180 nm since 2007 · 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.
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
- Drilling operations by fatih platform (imo 9503770Surveys · 86.4 nm
Worldwide in the collected sources
2 restricted areas & port closures listed in force · see all
Record snapshot 2026-10-03 02:05Z; source collection times vary.
Restricted
Navigation prohibited, exclusion and security zones, ports closed to traffic. All current restricted areas & port closures →
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.