This is in Continuation to my previous post about DYNAMIC POSITIONING SYSTEMS & DYNAMIC POSITIONING VESSEL found at :
http://www.jahajee.com/dynamic-positioning-systems-amp-dynamic-positioning-vessel/180/0.html
Dynamic Positioning is a system by which a Marine Ship maintains her position & heading. Similarly Dynamic Tracking enables a DP vessel to maintain a particular track and heading. To maintain this position, head or precision manoeuvrings of the DP vessel sophisticated Computer systems are used. These Dynamic Positioning Systems control the propeller and the thruster of the DP Vessel. These operations occur at sea where mooring or anchoring is not possible due to deep water, pipelines at the bottom or other technical problems and specialized ships in the form of DP Vessel are required.
How Dynamic Positioning System works ?
We are not going into technical jargon but in simple terms the Dynamic Positioning Systems consists mainly of 3 systems :
1. REFERENCE SYSTEMS
As the name suggests these system are used for reference of the vessel e.g. Position reference, heading reference, motion reference, magnitude and direction of environmental forces (wind, current etc.), depth and other reference depending on the DP Class and DP Vessel's Operation.
2. CONTROL SYSTEMS
These are controllers and they use mathematical model of the ship, based on a hydrodynamic and aerodynamic description of DP Vessel characteristics. These use the data from the Reference system, does its own complex calculations as per the required DP Operation and controls the Power and Propulsion System of the DP Vessel.
3. POWER AND PROPULSION SYSTEMS
Power units and the Propulsion unit of the Dynamic Positioning System consists of the Bow and stern thrusters, water jets, rudders and propellers. These control the Positioning or heading or even precision manoeuvrings of the DP Vessel. Most of the commands are controlled by the Control Systems. On DP Class 1 vessel the setup is simple but Class 2 and 3 DP ships, all computers and reference systems should be powered through a UPS.
http://www.jahajee.com/dynamic-positioning-systems-amp-dynamic-positioning-vessel/180/0.html
Dynamic Positioning is a system by which a Marine Ship maintains her position & heading. Similarly Dynamic Tracking enables a DP vessel to maintain a particular track and heading. To maintain this position, head or precision manoeuvrings of the DP vessel sophisticated Computer systems are used. These Dynamic Positioning Systems control the propeller and the thruster of the DP Vessel. These operations occur at sea where mooring or anchoring is not possible due to deep water, pipelines at the bottom or other technical problems and specialized ships in the form of DP Vessel are required.
How Dynamic Positioning System works ?
We are not going into technical jargon but in simple terms the Dynamic Positioning Systems consists mainly of 3 systems :
1. REFERENCE SYSTEMS
As the name suggests these system are used for reference of the vessel e.g. Position reference, heading reference, motion reference, magnitude and direction of environmental forces (wind, current etc.), depth and other reference depending on the DP Class and DP Vessel's Operation.
2. CONTROL SYSTEMS
These are controllers and they use mathematical model of the ship, based on a hydrodynamic and aerodynamic description of DP Vessel characteristics. These use the data from the Reference system, does its own complex calculations as per the required DP Operation and controls the Power and Propulsion System of the DP Vessel.
3. POWER AND PROPULSION SYSTEMS
Power units and the Propulsion unit of the Dynamic Positioning System consists of the Bow and stern thrusters, water jets, rudders and propellers. These control the Positioning or heading or even precision manoeuvrings of the DP Vessel. Most of the commands are controlled by the Control Systems. On DP Class 1 vessel the setup is simple but Class 2 and 3 DP ships, all computers and reference systems should be powered through a UPS.