For luck or knowledge, sleight of hand or a fair gamble, there be untold reasons why men locked in a sea-going vessel might have cause to call on the bones. Caution, though, is needed too, for 'tis rightly said the sea will brook no other mistress on 'er bounding main, and Luck is the ultimate woman, if nary a lady. A man may dice with or for most anythin', and the voyage be long enough.