Rolls-Royce developing cradle and rail-based boat transfer method
25 June, 2018
Rolls-Royce Marine are developing a cradle and rail-based method for launching and recovering daughter craft, called the boat transfer system (BTS), Riviera Maritime Media learned at a press event in Alesund, Norway.
The system utilises a cradle that a daughter craft simply manoeuvres into before being raised up to deck level on rails. Daughter craft can then either be taken on board or simply held alongside to allow for transfer of people and equipment at deck level. The modular cradle will be fitted with two dampeners to keep daughter craft stable during the process.
Deployment is either via a knuckle boom or an overhead crane and the system is available in ‘heavy-duty’ and ‘light’ versions.
Rolls-Royce Marine sees a number of advantages of the BTS over traditional davit and wire-based methods of deployment, including no pendulum effect from long wire lengths, no painter-handling hazards, no dual-lift complications, no hazards from free-swinging hooks and no hazards from misplaced cargo.
As well as heavy-duty and light versions for use in recovering and launching varying boat sizes, Rolls-Royce announced a frequent-use version for work in areas such as around offshore oil and gas installations, windfarms, commercial exploration vessels and naval vessels is in development alongside an occasional-use version for standby rescue vessels. The cradle can be fitted with a net to assist in recovering people from the water.
The BTS is still in the development stage but has left the concept stage. It has not yet been fitted to any vessels under construction and Rolls-Royce said it is possible the system may be capable of being retrofitted on older vessels. The product is targeted to compete with high-end davit systems for vessels of 60 m plus, and will take up slightly more space than a single-point davit system.