Six Degrees of freedom (6DoF) refers to the freedom of movement of a rigid body in three-dimensional space. Specifically, the body is free to change position as forward/backward (surge), up/down (heave), left/right (sway) translation in three perpendicular axes, combined with changes in orientation through rotation about three perpendicular axes, often termed yaw (normal axis), pitch (transverse axis), and roll (longitudinal axis).

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In Nautical terms it means: 

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A ship at sea moves in Six Degrees of motion: heave, sway, surge, roll, pitch and yaw. The first three are linear motions. Heaving is the linear motion along the vertical Z-axis, swaying is the motion along the transverse Y-axis, and surging is the motion along the longitudinal X-axis. Rolling is a rotation around a longitudinal axis, pitching is a rotation around the transverse axis and yawing is a rotation around the vertical axis.​​​

 

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​In Thailand, it means:​

 

Cruising at 6 Degrees North or just 360 miles north of the equator in the most perfectly sublime conditions and most beautiful islands known to man!

 

 

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