Before we leave "Buster"...

The LIFE magazine story of May 28, 1956, provides a detailed account of the days before and after Commander Crabb's disappearance.  Many think this last dive was done at the behest of  the foreign arm of  British Secret Intelligence, a belief  bolstered by the publication of  Peter Wright's SPYCATCHER. Wright claimed that Crabb was sent down to observe the hull and propeller design of the Ordzhonikidze, the radically fast new Russian cruiser that brought Premier Krushchev to Great Britain on a diplomatic call.