Ship Motions Flashcards
1
Q
Roll
A
The most significant stability criterion - capsize. Caused by waves, wind and can be induced by yaw.
2
Q
Pitch
A
A rocking motion between bow and stern. Mostly wave induced.
3
Q
Yaw
A
This is what the rudder is supposed to do. Rudder corrections for course keeping illustrate that wind and waves can cause yawing motions.
4
Q
Surge
A
Lengthwise. Propulsion and drag act along this axis. Surfing is an example of surge caused by a wave.
5
Q
Sway
A
Sideways. Generally a minor movement in a large vessel. Wave and wind loads could contribute to this motion.
6
Q
Heave
A
Up and down. Wave motion causing the whole ship to rise and fall.
