Simple Sentences:
* The ship's captain wore a nautical hat with a gold braid.
* The restaurant had a charming nautical theme with blue and white stripes.
* She collected nautical souvenirs from her travels.
More Complex Sentences:
* The nautical charts guided the sailors through treacherous waters.
* He had a passion for nautical history and spent hours reading about famous voyages.
* The nautical flag signals indicated the ship's position and intentions.
* The artist's paintings captured the beauty and mystery of the nautical world.
* Her nautical knowledge proved invaluable during the rescue mission.
You can also use "nautical" as an adjective to describe something related to sailing or navigation:
* Nautical knots are used to tie ropes.
* The museum displayed a collection of nautical instruments.
* They learned about nautical terms in their sailing class.