Assertion: keel | /r/HasProperty | fitted on hull
Facets:
value: to insure
type: PURPOSE
value: to increase the transverse stability
type: PURPOSE
Source sentences:
text: A keel may be fitted on a hull to increase the transverse stability, directional stability or to create lift.
text: The lead was added before the keels were fitted to the hull to insure that it filled the outside of the wing.