Assertion: canting keel | /r/HasProperty | combined with retractable centerboard
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Tilting the keel, however, greatly reduces its lift, so canting keels are usually combined with a retractable centerboard or daggerboard that is deployed when the keel is tilted, and retracted (to reduce drag) when the keel is returned to the vertical.