Assertion: rower's oar | /r/HasProperty | effective
Facets:
value: highly
type: DEGREE
value: for the trireme
type: TRANSITIVE-OBJECT
Source sentences:
text: For a ship to travel at high speeds would require a high oar-gearing, which is the ratio between the outboard length of an oar and the inboard length; it is this arrangement of the oars which is unique and highly effective for the trireme.