"Vipers Ahoy"----Ahoy - This was once the dreaded war-cry of the Vikings.
"Goldbricking" - Military slang for avoiding work or duty.
"Captain's Gig" A gig was originally a long, light ship's boat propelled by oars and designed for speed rather than work. Thus it would not likely to be used for hauling ship's stores, transferring cargo, and the like, and would thus be more available for simply transporting people. The captain's gig is such a craft reserved exclusively for his use.
"Viper Clipper"---Clipper Comes from the old English word 'clip', meaning to run, or fly swiftly.
"Flogging the Clock" Killing time or simply doing tasks in a slow and leisurely fashion. Originally derived from "Flogging the Glass", a practice from the early days of sail when time on deck was marked by an hour-glass. Young midshipmen entrusted with turning the glass over to mark the passing of an hour would tap on the side to make the sand fall through faster.