Imagine living in a box at the bottom of the sea for a month at a time. Locked away in a saturation chamber, plumbed to depths of more than 500 feet, this has been David Beckett's love, life, and work for all his adult life. Destined to become a pig farmer in the late 1960s, a twist of fate saw David become an air diver, and within a short space of time, he progressed to saturation diving. He would brush with death on more than one occasion - not least when helping to recover 47 bodies of the victims of the Sumburgh chinook disaster in Scotland's Shetland Islands - and when called in to assist with the deadliest peacetime shipwreck in Europe, as the MSi Estonia isank in the Baltic Sea in 1994 and claimed 852 lives. Amongst the depths of despair, there are many lighter moments, including treasure hunting in the Philippines, almost clinching a contract to salvage the bursar's safe from thei Titanic, iand surviving a 24-hour typhoon that brought 80-foot waves crashing down on his boat. iT