A day of messing about at Stoney. a DPV or diver propulsion vehicle is a motorised method for a diver to get around - ideal on large wrecks. Great vis but 6 deg c temp so painful fingers!
There is a couple of nice maps and hand drawn diagrams with bearings but I can find a way to post pics. Join this fb group. They are on there. facebook.com/groups/305806390539159/?ref=share