Yaw checking ability
A ship's ability to check and reverse a turn when counter-rudder is applied, measured in the zig-zag test under the IMO manoeuvring standards. IMO-grounded
Yaw, yawing
The rotational motion of a ship about its vertical axis, causing its heading to swing from side to side.
Yoke arm
An arm forming part of a linkage, for example in a steering or mooring connection.