Class notation for Dynamic Positioning using a single dynamic positioning system, position reference back-up, and an independent joystick system back-up.
The dynamic position system is regarded as the complete installation necessary for dynamically positioning of vessel, and includes a power system, thrusters, DP-control system and the independent joystick system. The class notation correlates to IMO equipment class 1 for vessels with Dynamic Positioning System.
The notation ensures that the vessel has a system which is sufficient to meet class requirements and IMO guidelines for Dynamic Positioning systems. This notation enables the customer to offer services in operations requiring a Dynamic Positioning equipment class 1.
The following documentation is applicable:
Instrumentation and automation; dynamic positioning control and monitoring system, independent joystick system, thrusters, mode control selection, position reference systems and sensors
DP-control centre arrangement and layout documentation
Programs for tests and trials
Electric power system documentation; for instance electrical load calculation during dynamic positioning operation
Calculation of the environmental regularity numbers evaluation, ie, the ability keep in position relative to weather conditions
The scope related to the DP notation covers certification of the DP systems, verification/review of the related machinery systems and comprehensive testing of the DP functionality.