Domain for a pirate themed campaign

I'm trying to decide between War, Trickery, Life and Grave domains.  Leaning towards Trickery.  Any comments\suggestiin?

War would give me a couple of things I want, but Trickery could be fun with 1 level as Fighter

Grave or Life would make sense for what amounts to the ship's doctor.

Tempest Domain is thematically very appropriate for a nautical adventure.

DM implied that we might be on the sea that much.  Otherwise I would agree.

I played a tempest cleric in a campaign that was almost entirely land based, and it worked great. 

But the question is, what do you want to be able to do?