Nautical is a term used to describe activities related to the SEA, such as sailing, navigation, and fishing. OCEANIC (7 letters) is an adjective that refers to the ocean, NAVIGATIONAL (12 letters) is an adjective that describes the act of navigating, PELAGIC (7 letters) is an adjective that describes the open ocean, SEAFARING (9 letters) is an adjective that describes the activity of sailing, THALASSIC (9 letters) is an adjective that refers to the SEA, AQUATIC (7 letters) is an adjective that describes water-related activities, SEA (3 letters) is a noun that refers to a large body of salt water, MARITIME (8 letters) is an adjective that describes activities related to the SEA, NAVAL (5 letters) is an adjective that describes activities related to the navy, and MARINE (6 letters) is an adjective that describes activities related to the ocean.