1103/26
Received: 6 Nov 2026, 00:00Updated: 6 Nov 2026, 13:03
analysis
Scheduledstarts 07 Nov 2026, 00:00 UTC (in 10 h)Scientific survey operations in the Sea of Marmara, 07 Nov 2026 to 01 May 2027
Scientific surveys will be conducted by vessels DENAR SURVEYOR, DENAR EXPLORER and SALVOR in two areas of the Sea of Marmara. Activity is planned from 07 Nov 2026 until 01 May 2027. Mariners are instructed to pass clear of the working vessel. The listed coordinates define Area-1 and Area-2.
Pass clear of the working vessel and navigate with caution in the listed areas.
- Type
- Survey operations · severity moderate
- Feed
- Survey operationsAll warnings of this kind on the map (contributors), or as an API feed: /api/v2/feeds/survey/
- Location
- Sea of Marmara (two survey areas listed)
- Validity
- From 07 Nov 2026, 00:00 UTC
Until 01 May 2027, 20:59 UTC07 KAS 26 - 01 MAY 27; BU BİLDİRİ 01 MAY 27 SAAT 2059Z’DA YÜRÜRLÜKTEN KALDIRILACAKTIR. - Activity periods
- 07 Nov 2026, 00:00 UTC - 01 May 2027, 20:59 UTC (Scientific surveys by DENAR SURVEYOR, DENAR EXPLORER and SALVOR (07 Nov 26 to 01 May 27, end 2059Z))
- Hazards
- scientific survey operations, working vessels in area
Vessels involved
- DENAR SURVEYOR · survey vessel
- DENAR EXPLORER · survey vessel
- SALVOR · survey vessel
Coast stations for this area
- RCCMRCC VarnaBulgaria158 NM from the area
- RCCMSRCC AnkaraTurkey217 NM from the area
- RCCMRCC Constanta/Constanta Harbor MasterRomania260 NM from the area
- DSCDSC Station BandirmaMSRCC AnkaraTurkeyMMSI 002711000VHF18 NM from the area
- DSCDSC Station SarköyMSRCC AnkaraTurkeyMMSI 002711000VHF46 NM from the area
- DSCDSC Station CamlicaMSRCC AnkaraTurkeyMMSI 002711000VHF49 NM from the area
- DSCDSC Station MahyadagMSRCC AnkaraTurkeyMMSI 002711000VHF78 NM from the area
- DSCDSC Station KayalidagMSRCC AnkaraTurkeyMMSI 002711000VHF79 NM from the area
Generated automatically from the warning text on 06 Nov 2026, 13:08 UTC. It can be wrong: the original warning below is the authoritative text.
Message content
ONHO NAVIGATIONAL WARNING NO : 1103/26
SEA OF MARMARA
1. SCIENTIFIC SURVEYS, BY VESSELS DENAR SURVEYOR, DENAR EXPLORER AND SALVOR FROM 07 NOV 26 TO 01 MAY 27 IN THE FOLLOWING AREAS.
AREA-1
40 33.58