0649/23
Received: 4 Jul 2023, 00:00Updated: 6 Nov 2026, 15:23
analysis
ActiveAhırkapı lighthouse fog horn temporarily inoperative in Istanbul Strait
The fog horn (sound signal) at Ahırkapı lighthouse, position 41 00.38 K, 028 59.13 D, is reported temporarily out of service. Mariners are advised and should not rely on the fog horn. No times or restoration details are given in the message.
Navigate with caution, maintain proper lookout and safe speed, and do not rely on the fog horn for navigation or collision avoidance.
- Type
- Aids to navigation · severity low
- Feed
- Aids to navigationAll warnings of this kind on the map (contributors), or as an API feed: /api/v2/feeds/aton/
- Location
- Istanbul Strait (Ahırkapı)
- Hazards
- fog horn inoperative, reduced sound signal
Coast stations for this area
- RCCMRCC VarnaBulgaria140 NM from the area
- RCCMSRCC AnkaraTurkey188 NM from the area
- RCCMRCC Constanta/Constanta Harbor MasterRomania231 NM from the area
- DSCDSC Station CamlicaMSRCC AnkaraTurkeyMMSI 002711000VHF4 NM from the area
- DSCDSC Station KeltepeMSRCC AnkaraTurkeyMMSI 002711000VHF55 NM from the area
- DSCDSC Station BandirmaMSRCC AnkaraTurkeyMMSI 002711000VHF64 NM from the area
- DSCDSC Station MahyadagMSRCC AnkaraTurkeyMMSI 002711000VHF77 NM from the area
- DSCDSC Station SarköyMSRCC AnkaraTurkeyMMSI 002711000VHF85 NM from the area
Aids to navigation affected
- DiscontinuedAHIRKAPI FENERİ · fog horn · 41 00.38 K, 028 59.13 D
No aids-to-navigation list in the database yet; aids are shown as the warning names them.
Generated automatically from the warning text on 31 Oct 2026, 06:18 UTC. It can be wrong: the original warning below is the authoritative text.
Message content
NAVTEX AREA SAUDI ARABIA / BLACK SEA / TURKEY (depending on context, use exact match)
CONSTANTINOPLE STRAIT / ISTANBUL STRAIT (Keep exact geographic name from text)
BLACK SEA / ISTANBUL STRAIT -> İSTANBUL STRAIT
SAUDI ARABIA NAVWARNING NUMBER: 0649/23
ISTANBUL STRAIT
AHIRKAPI LIGHTHOUSE FOG HORN AT 41 00.38 N, 028 59.13 E IS TEMPORARILY INOPERATIVE.
CAUTION TO MARINERS.