I know it seems obvious - I live in New England and work in the marine science field - of course I like all things nautical. Not surprisingly, there are far too many rocks and shells and marine life elements in our home. Nick made me do a purge of some beach detritus a while back. I got rid of tons of dust-collecting shells and urchin tests. But nautical style doesn't have to be blatantly beachy. Or come with the faint odor of dead echinoderm.
I prefer the "haunted sea captain's house" interpretation of nautical style.