507/26

Military submarine operations in Northern Ionian Sea (Gulf of Taranto), 26-27 Oct

No longer in forceReceived 24 Oct 2026, 11:52 UTCArchived 27 Oct 2026, 20:29 UTC

Warning text

COASTAL WARNING 507/26 OCT 23 NORTHERN IONIAN SEA TARANTO GULF FROM 260000Z OCT 26 TO 260959Z OCT 26 IN: ZONE BOUNDED BY THE FOLLOWING POINTS: 40 180N 016 510E 40 240N 016 540E 40 265N 016 570E 40 290N 017 025E 40 242N 017 120E 40 230N 017 120E 40 225N 017 115E 40 220N 017 120E 40 180N 017 120E FROM 260000Z OCT 26 TO 260959Z OCT 26 IN: ZONE SIERRA 731, ZONE SIERRA 733 ALFABRAVO, FROM 260000Z OCT 26 TO 270800Z OCT 26 IN: ZONE SIERRA 733 DELTA, FROM 252200Z OCT 26 TO 270800Z OCT 26 IN: ZONE BOUNDED BY THE FOLLOWING POINTS: 39 340N 017 000E 39 340N 017 380E 39 200N 017 380E 39 155N 017 250E 39 155N 017 110E 39 245N 017 110E WILL BE CARRIED OUT MILITARY ACTIVITIES WITH SUBMARINE OPS ANCORAGE, FISHING AND OTHER UNDERWATER ACTIVITIES ARE PROHIBITED (BROADCAST VALID 24 OCT 2026 1130 TO 27 OCT 2026 2330 ITALIAN TIME.)

Analysis

No longer in force

Military activities including submarine operations will take place in areas of the Northern Ionian Sea (Gulf of Taranto). Anchorage, fishing and other underwater activities are prohibited in the named zones. Activity applies in specified polygonal areas and named sea zones between 25/26 Oct and 27 Oct as stated. Broadcast validity phrase is given in Italian time.

Do not anchor, fish or conduct underwater activities in the named zones; avoid the areas and navigate with caution while keeping a lookout for military vessels and submarines.

Type: Military exercise · severity high
Feed: Military exercises and firingAll warnings of this kind on the map, or as an API feed.
Location: Northern Ionian Sea, Gulf of Taranto (named polygonal zones and Zone Sierra 731/733/733 DELTA)
Validity: From 25 Oct 2026, 22:00 UTC
Until 27 Oct 2026, 08:00 UTCFROM 260000Z OCT 26 TO 260959Z OCT 26; FROM 260000Z OCT 26 TO 270800Z OCT 26; FROM 252200Z OCT 26 TO 270800Z OCT 26 (BROADCAST VALID 24 OCT 2026 1130 TO 27 OCT 2026 2330 ITALIAN TIME.)
Activity periods: 26 Oct 2026, 00:00 UTC - 26 Oct 2026, 09:59 UTC (Zone bounded by listed points (first polygon) and Zones Sierra 731 and Sierra 733 ALFABRAVO)
26 Oct 2026, 00:00 UTC - 27 Oct 2026, 08:00 UTC (Zone Sierra 733 DELTA)
25 Oct 2026, 22:00 UTC - 27 Oct 2026, 08:00 UTC (Second polygonal zone (starts listed as 252200Z OCT 26 in text))
Hazards: military activities, submarine operations, prohibited anchorage, prohibited fishing, prohibited underwater activities

Coast stations for this area

RCCMRCC VarnaBulgaria150 NM from the area
RCCMRCC Constanta/Constanta Harbor MasterRomania219 NM from the area
RCCMRCC BarMontenegro (Republic of)246 NM from the area
DSCDSC Station ThasosJRCC PiraeusGreeceMMSI 002371000VHF 90range 90 NM133 NM from the area
DSCDSC Station IneboluMSRCC AnkaraTurkeyMMSI 002712000VHF135 NM from the area
DSCDSC Station IstanbulMSRCC AnkaraTurkeyMMSI 002711000VHF, MF, HF135 NM from the area
DSCDSC Station BourgasMRCC VarnaBulgariaMMSI 002070816VHF 23range 23 NM135 NM from the area
DSCDSC Station EmineMRCC VarnaBulgariaMMSI 002070815VHF 48range 48 NM150 NM from the area

Worked out automatically from the warning text on 26 Oct 2026, 14:18 UTC. It can be wrong: the official warning text is the authority.

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