Fontspace is a great resource for themed fonts, including nautical and ocean-styled font designs available to download. Sailor's Fat Tattoo Script is a classic nautical Sailor-Jerry-style font, and JLR Waves is a more playful nautical font.
During a search for nautical-inspired fonts on Fontspace, a range of related categories appears to the left of the search results. Use these keywords to refine the search for the appropriate style of nautical font for the application. A child's nautical birthday party invitation requires a more playful, cartoon-style nautical font, whereas a formal on-board reception requires a more sophisticated nautical font. The keyword "treasure" results include "Black Sam's Gold," a classic pirate-style font.