Assertion: keel | /r/CapableOf | serve two purposes
Facets:
value: in sailboats
type: LOCATION
value: as an underwater foil
type: PURPOSE
Source sentences:
text: In sailboats, keels serve two purposes: 1) as an underwater foil to minimize the lateral motion of the vessel under sail (leeway) and 2) as a counterweight to the lateral force of the wind on the sail(s) that causes rolling to the side (heeling).