A tour through the tunnels at 57m in Dorothea quarry with a slow swim to burn off 30mins of deco. Diving on AP XPD rebreathers. Terry Simpson and Mike Smith. BSAC Advanced Mix Gas MOD3 qualified divers. Cold water diving i9n North Wales - 6 deg c demands a drysuit and a thick Undersuit.
Негізгі бет Dorothea Rebreather diving 21 5
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