Assertion: centerboard | /r/CapableOf | drop keel
Facets:
Source sentences:
text: centerboard; centreboard; drop keel; sliding keel
text: Centerboards are usually not too hard to operate but drop keels because of their weight take a fair amount of cranking to pull up and down.
text: centerboard; centreboard; drop keel; sliding keel
text: centerboard; centreboard; drop keel; sliding keel