Equestrian Ship Mage

"She is darn good at her job; she can wear whatever she wants."
                                           -North Star, captain of the Surf Dancer

More navy ponies!
In my opinion an Equestrian navy would be mostly cosairs, hence there a boundless possibilities for sea-themed swag.
Now, what to do for a captain's outfit...

Oh, and if you haven't already, play Shovel Knight.