Video - Six Degrees of Freedom. 6dof.
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Video - Six Degrees of Freedom.

The Six degrees of freedom (6DoF) refers to the freedom of movement of a rigid body in three-dimensional space. To be specific the body is free to move both forward and backward, left and right as well as up and down in three perpendicular axes combined with rotational axes termed pitch, yaw, and roll.

The six degrees of freedom continued.

On a Dynamic Positioned Vessel only three of the six degrees are controlled by the DP system they are surge sway and yaw. The other three degrees of freedom are heave pitch and roll are not controlled by the DP system however the are monitored by the motion reference units (MRU) which send information to the DP control which is used in the modeling process.
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The Six Degrees of Freedom