Naughty Nautical with Jim Hawkins, Black Dog and Long John Silver doing all that keelhauling, birching, baning and whiping with a Cat o' nine tails - is of course, nautical! This should help.
Captains of cruise ships, An Officer and a Gentleman, striped French style top and a boating hat. Red, white and navy with an anchor would be simple but effective. Finish of with some white leather gloves.
Sew a lobster to a wig or wear it on a headband. Add this anchor around you neck or let it swing from a belt.
Add a starfish with a piece of fishing net for an interesting accessory. Or just wear the net with high heels. Add a couple of sea shells and a crab (in obvious places).
Go for the yachtsman look and get a navy striped top from Matalan or a proper Breton shirt and wear it with your leathers. Add a cap to finish the look. Cheap and cheerful option. Get some sailors tattooed arms without the pain!
Hello Sailor! Great top with bib detail on Ebay. Add a sailor hat, or Marine hat and some white trousers. Failing that your leather or PVC trousers. How about the Dixie Cup style hat?
Put a bit of camp into it. Lets have a bit of a carry on!