first rule: forget estibot or any automated tool to get domain values (use them for other useful metrics).
commercially very hard to use keyword combined with a hard to sell extension.
all extensions (except .com) parked, for sale, etc. , also captain.ca
only usage which comes to my mind is something related to boats, yachts, etc.
maybe a site where you can hire "captains"
but really i think as a pure domain its very hard to sell.
my appraisal: reg fee