Captain

A captain is a naval military rank, equivalent to the rank of colonel. The rank of captain in the army, however, is two ranks below that of colonel. By naval custom, any commander of a vessel is normally addressed as "Captain" while aboard that ship – even if their commissioned rank is lower.

Captain Ahab is a character in the book Moby Dick.

Captain Mike McDonald led the Operation Reach Out mission to Europa.

Captain Tripps was a spokesperson for the BioMerge protestors.