rowboat, small boat
艇 centers on a small, light watercraft, especially a rowboat or similar small boat.
艇 combines 舟 (boat) with 廷, which likely contributes the sound テイ. The character originally referred to a small, light boat.
The left side 舟 is a boat, and the right side 廷 looks like a person standing in a small craft. Picture a single person rowing a tiny boat.
For テイ, imagine a small boat shaped like the letter T, floating on a calm lake: T -> テイ, and the boat is a tiny rowboat.
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(small) boat
kyōtei; boat race; hydroplane racing event and gambling sport in Japan
naval vessels; warships
launch
missile boat
landing craft
half a boat length
patrol boat
military patrol boat
patrol boat
minesweeping ship; minesweeper
landing ship
lifeboat; rescue boat
lifeboat
mine warfare vessel
torpedo boat
(steam) launch
fireboat
rowing; boating
rowing course; rowing centre (center)