0971/26
Underwater operations in the Strait of Istanbul by vessel Octopus on 20 Oct
No longer in forceReceived 02 Oct 2026, 00:00 UTCArchived 20 Oct 2026, 21:22 UTC
Warning text
Positions open on the mapSEYHİDDA NAVIGATIONAL WARNING NUMBER : 0971/26
STRAIT OF ISTANBUL
1. UNDERWATER OPERATION, BY OCTOPUS ON 20 OCT 26 ALONG THE LINE JOINING THE FOLLOWING POINTS:
41 01.07 N - 029 00.52 E
41 00.97 N - 028 59.23 E
WIDE BERTH REQUESTED.
2. THIS MESSAGE WILL BE CANCELLED ON 20 OCT 26 AT 2059Z.
Location map
Open in the full mapAnalysis
No longer in forceUnderwater operations will be carried out by the vessel Octopus in the Strait of Istanbul along a line joining two given positions. The activity is stated for 20 Oct 2026 and the warning is to be cancelled at 2059Z on that date. Mariners are requested to give a wide berth.
Give a wide berth to the area and navigate with caution.
- Type
- Survey operations · severity moderate
- Feed
- Survey operationsAll warnings of this kind on the map, or as an API feed.
- Location
- Strait of Istanbul
- Validity
- From 20 Oct 2026, 00:00 UTC
Until 20 Oct 2026, 20:59 UTC20 EKİ 26 (20 OCT 26); THIS MESSAGE WILL BE CANCELLED ON 20 OCT 26 AT 2059Z. - Activity periods
- 20 Oct 2026, 00:00 UTC - 20 Oct 2026, 20:59 UTC (On 20 Oct 26; cancelled 20 Oct 26 2059Z)
- Hazards
- underwater operations
Vessels involved
- OCTOPUS · work vessel
Coast stations for this area
- RCCMRCC VarnaBulgaria139 NM from the area
- RCCMSRCC AnkaraTurkey187 NM from the area
- RCCMRCC Constanta/Constanta Harbor MasterRomania230 NM from the area
- DSCDSC Station CamlicaMSRCC AnkaraTurkeyMMSI 002711000VHF3 NM from the area
- DSCDSC Station KeltepeMSRCC AnkaraTurkeyMMSI 002711000VHF55 NM from the area
- DSCDSC Station BandirmaMSRCC AnkaraTurkeyMMSI 002711000VHF65 NM from the area
- DSCDSC Station MahyadagMSRCC AnkaraTurkeyMMSI 002711000VHF78 NM from the area
- DSCDSC Station SarköyMSRCC AnkaraTurkeyMMSI 002711000VHF86 NM from the area
Worked out automatically from the warning text on 02 Oct 2026, 17:27 UTC. It can be wrong: the official warning text is the authority.