Ship motions

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Ship motions are defined by the six degrees of freedom that a ship or boat can experience.

Contents 1 Translation 2 Rotation 3 See also 4 References

[edit] Translation

Heave : is the linear vertical (up/down) motion

Sway : is the linear lateral (side-to-side) motion

Surge : is the lenear longitudinal (front/back) motion

[edit] Rotation

Roll : is when the vessel rotates about the longitudinal (front/back) axis.

Pitch : is when the vessel rotates about the transverse (side-to-side) axis.

Yaw : is when the vessel rotates about the vertical (up-down) axis.

[edit] See also

• Hull (watercraft)
• Naval architecture

[edit] References

1) Society of Naval Architects and Marine Engineers (SNAME), "Principles of Naval Architecture", 1989, Vol. III, Pg.41, Section 3 - Ship Responses to Regular Waves.