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Check Vessel Classification


TO CHECK THE DP CLASS of a vessel provide the name OR IMO number of the vessel.

If vessel is not found, please send the DP class certificate of the vessel issued by a Classification Society to the DP team and the vessel will be added into the list. If information about the classification of the vessel is incorrect, please contact The Nautical Institute.


Class Requirements


Based on IMO (International Maritime Organization) publication 645 (IMO MSC/Circ.645, Guidelines for vessels with dynamic positioning systems) the Classification Societies have issued rules for Dynamic Positioned Ships described as Class 1, Class 2 and Class 3.

Equipment Class 1 has no redundancy: loss of position may occur in the event of a single fault.

Equipment Class 2 has redundancy so that no single fault in an active system will cause the system to fail. Loss of position should not occur from a single fault of an active component or system such as generators, thruster, switchboards, remote controlled valves etc. But may occur after failure of a static component such as cables, pipes, manual valves etc.

Equipment Class 3 which also has to withstand fire or flood in any one compartment without the system failing. Loss of position should not occur from any single failure including a completely burnt fire sub division or flooded watertight compartment.

Classification societies have their own notations, please download DP Class Chart in this regard.

Ship Name   
IMO Number
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