Linked from
The 6 pages that link to Hull (watercraft), each with the reason it gives.
Sailing shipBroader topic: Hull shape affects a sailing ship’s speed, stability, and handling.
CatamaranNarrower topic: A catamaran’s defining structure consists of two hulls rather than one.
SailboatRelated: The hull carries the crew and equipment while displacing water.
YachtRelated: Hull shape affects a yacht’s speed, stability, and suitability for different waters.