The search continues to trace a missing diver in the Pentland Firth.
HM Coastguard is coordinating the rescue mission after the alarm was raised around 6pm on Tuesday, south east of Swona in the Orkney Islands..
The strait, in the north of Scotland, separates the Orkney Islands from Caithness.
Helicopters from Sumburgh and Inverness have also been sent to help in the search along with RNLI lifeboats.
A Coastguard spokesperson said: “HM Coastguard is coordinating the ongoing search for a diver in Pentland Firth.
“The alarm was raised Tuesday at about 6pm, south-east of the Isle of Swona.
“The Coastguard helicopters from Sumburgh and Inverness have been sent to assist, along with RNLI all-weather lifeboats from Longhope, Wick, Thurso and Stromness, and Coastguard Rescue Teams from Kirkwall and St Margaret’s Hope.
“Four other private vessels have also supported the search since it began.”