L1I1G2H4T1S1H4I1P3
18 points
LIGHTSHIP is validvalid
a ship with a beacon light stationed in a fixed location to serve as a navigational warning [n LIGHTSHIPS]
a ship intended to function as a lighthouse [n -S]
a ship with a beacon light stationed in a fixed location to serve as a navigational warning [n LIGHTSHIPS]
a ship intended to function as a lighthouse [n -S]