Reliable and robust methods of positioning are vital for safe vessel operations at offshore installations. Dynamic positioning (DP) has played an increasingly important role over the past 35 years, with various manufacturers’ systems available around the world. It is important to members of the International Marine Contractors Association (IMCA) that they keep in touch with all DP systems and associated developments to ensure ever safer and more efficient operations. To this end, IMCA has published RadaScan Microwave Radar Sensor for Dynamic Positioning Operations prepared by Guidance Navigation Ltd, who manufacture the RadaScan sensors, with additional material provided by IMCA members.

“The growth in the use of DP has been accompanied by the development of internationally recognised rules and standards against which DP vessels are designed, constructed and operated,” explains Jane Bugler, IMCA’s Technical Director. “These include IMO MSC Circ 645 – Guidelines for vessels with dynamic positioning systems, DP rules of the main classification societies and IMCA M 103 - Guidelines for the design and operation of dynamically positioned vessels, and guidelines for DP capable OSVs IMCA M 182 - International guidelines for the safe operation of dynamically positioned offshore supply vessels.

“The growth and development of DP systems has stimulated the development of DP positon measurement sensors, which have become more sophisticated as technology has allowed. The DP market is familiar with the use of laser range and bearing sensors as described in A review of marine laser positioning systems (IMCA M 170), which deals with the Fanbeam and CyScan laser systems. An equivalent document describes the use of the microwave-based Artemis system – A review of the Artemis Mark V positioning system (IMCA M 174). Now it is time to introduce members to the RadaScan microwave system with our latest publication – IMCA M 209.”

In addition to a useful glossary, the slim volume contains an overview; a detailed look at the RadaScan components; sensor design; operation; servicing and maintenance; applications; technical specification; operational experience and – in the appendix – a list of 16 frequently asked questions.

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