Assertion: stern mounted rudder | /r/ObjectUse | used in ancient han dynasty china
Facets:
value: as a true rudder
type: MANNER
Source sentences:
text: Although some[a] classify a steering oar as a rudder, others[b] argue that the steering oar used in ancient Egypt and Rome was not a true rudder and define only the stern-mounted rudder used in ancient Han dynasty China as a true rudder.