- is the linear vertical (up/down) motion
- is the linear lateral (side-to-side) motion
- is the linear longitudinal (front/back) motion
Rotation axes 
Vertical axis 
Vertical axis, or yaw axis — an axis drawn from top to bottom, and perpendicular to the other two axes. Parallel to the fuselage station.
The yaw axis is defined to be perpendicular to the body of the wings with its origin at the center of gravity and directed towards the bottom of the aircraft. A yaw motion is a movement of the nose of the aircraft from side to side. The pitch axis is perpendicular to the yaw axis and is parallel to the body of the wings with its origin at the center of gravity and directed towards the right wing tip. A pitch motion is an up or down movement of the nose of the aircraft. The roll axis is perpendicular to the other two axes with its origin at the center of gravity.
Lateral axis 
Lateral axis, transverse axis, or pitch axis — an axis running from the pilot's left to right The lateral axis passes through the plane from side to side. Rotation about this axis is called pitch. Pitch changes the vertical direction the aircraft's nose is pointing. The elevators are the primary control of pitch. Also called Transverse axis.
Longitudinal axis 
The longitudinal axis passes through the plane from nose to tail. Rotation about this axis is called bank or roll. Bank changes the orientation of the aircraft's wings with respect to the downward force of gravity. The pilot changes bank angle by increasing the lift on one wing and decreasing it on the other. This differential lift causes bank rotation around the longitudinal axis. The ailerons are the primary control of bank. The rudder also has a secondary effect on bank.
Rotation motions 
There are three special axes in any ship, called vertical, lateral and longitudinal axes. The movements around them are known as roll, pitch and yaw.
- is the rotation of a vessel about its longitudinal (front/back) axis
- is the rotation of a vessel about its transverse (side-to-side) axis
- is the rotation of a vessel about its vertical axis
There are methods for both passive and active motion stabilization used in some designs. They can include static hull features such as skegs and bilge keels, or active mechanical devices like counterweights, Antiroll Tanks, and stabilizers.
See also 
- translation (physics)
- Naval architecture
- Stern suction
- Ship stability
- Ship motion test
- Flight dynamics
- Society of Naval Architects and Marine Engineers (SNAME), "Principles of Naval Architecture", 1989, Vol. III, Pg.41, Section 3 - Ship Responses to Regular Waves