I haven't tried my hand at a horror RP before, but I'd very much like to. 

How much do we have to know about Call of Cthulhu? All I know is that Cthulhu is some big squid-headed monster that people across the internet universally fear. 

Not that that'd be a bad thing mind, as I imagine my character wouldn't be a professor in ancient beings from a time long forgotten, and would be shouting "WTF!!!!!" at every turn.

I'd play to play as a local successful business owner, plump around the mid-section, with a thick moustache and a monocle. Someone who thinks it's all nonsense, and who has been relatively untouched by the dark nightmares (thanks to a nightly excess of brandy), but whose wife has been terribly effected by it all. Therefore, he goes to the ship so that he can put her mind at rest by assuring nothing is there. 

Or maybe there's a financial reason behind it; maybe there's something on the ship he wants, like some hidden cargo, hmmm?

I'm not sure, but I'll hash out some concepts and see what you think :)