Tony Howell

I have been a scuba instructor since 1975 and in that time I have encouraged everyone capable of breathing to become a scuba diver.

Scapa Flow in the Orkney Islands was a major British naval base during WW1. At war's end, it was agreed to intern the German High Seas Fleet here.

There's lots of CCRs (closed circuit rebreathers) on offer, many intended for the recreational market. Some have limits that are vital to understand.