Dynamic Positioning systems consist of components and systems acting together to achieve
reliable position keeping capability. The DP system includes the power system (power generation and power management),
thruster system and DP control system.
Dynamic positioning systems have been installed on vessels used worldwide. Typical DP vessels include survey vessels,
drilling ships, work boats, semi-submersible floating rigs, diving support vessels, cable layers, pipe-laying vessels, shuttle
tankers, trenching and dredging vessels, supply vessels, and floating, production, storage and offloading vessels (FPSOs).
Based on International Maritime Organization (IMO) publication 645 the Classification Societies have issued rules
for dynamically positioned ships described as Class 1, Class 2 and Class 3.