This paper describes the development of lifting arrangements and in particular of lifting structures for daughter craft. Following a brief summary of the various types of daughter craft, the requirements for launch and recovery systems are identified. The various design issues to be addressed when designing a lifting arrangement for a daughter craft are then discussed, followed by a review of the typical design and testing process for a lifting structure. The role of finite element analysis to support this process is also described. The various types of lifting arrangements for larger daughter craft are then illustrated, with particular emphasis on the design of a single point lifting arrangement of a 13 tonne Pacific 38 Rescue Craft built for service in the North Sea. This is followed by a review of the development of lifting arrangements for small RIBs and especially of single point lift structures that have been developed for three generations of Royal Navy seaboat RIBs.
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