Why racing sailing boats do not translate directly into warships

Could 30-knot America’s Cup-style boats be useful for coast guards or navies?

Their performance is impressive, but turning one into a useful naval craft means accepting the much harder requirements of weapons, boats, payload, and rough-sea endurance.

A 30-knot racing yacht resembles an Olympic runner, exceptional within one narrowly optimized role. A naval or coast-guard craft has a different burden, needing space and stability for weapons, small boats, endurance, and rough-water operations. Adding those loads changes the hull, rig, and performance assumptions that make the racing boat so fast. Pure speed therefore gives way to the broader demands of an operational vessel.