The term 'clear of the sea bottom' can be broken down into three crossword solutions: AWEIGH (6 letters), ATRIP (5 letters), and BED (3 letters). Aweigh is a nautical term meaning to lift or raise an anchor from the sea floor. Atrip is another nautical term meaning that the anchor has been lifted and is ready to be used. Finally, BED is a nautical term referring to the bottom of the sea where the anchor is placed. Together, these three terms describe the process of lifting an anchor from the sea floor and being clear of the sea bottom.