Assertion: keel | /r/CapableOf | act as ballast
Facets:
value: for the boat
type: PURPOSE
value: in sailing craft
type: LOCATION
Source sentences:
text: In sailing craft, keels can act as ballast and may be movable to counter balance the sideways tipping effect of the wind pushing on the sail.
text: In the case of a sailing yacht, this same keel must also act to provide ballast and righting moment.
text: The keel weighs three quarters of a ton and serves as all of the ballast for the boat, giving these models a modern ballast ratio of 36%.