Assertion: rudder | /r/ObjectUse | used in merchant ships
Facets:
value: from one-fortieth
type: TEMPORAL
value: for steamships
type: PURPOSE
Source sentences:
text: White states that "for steamships...the extreme breadth of the rudder (is often) from one-fortieth to one-sixtieth of the length...in merchant ships much smaller rudders are used, and values as low as one-hundredth have been met with".