I’m not entirely sure if they went for a dive that afternoon (as they returned relatively quickly), but these two RIBs belonged to a group of divers who had set up camp in Kilchiaran Bay (I believe they are regular visitors to Islay)
Islay Pictures Photoblog
Pictures from the Isle of Islay, Scotland
Armin Grewe mentioned this Image on islay.org.uk.
Armin Grewe mentioned this Image on new.islayblog.com.