ELECTRIC GES FREE-FALL LIFEBOAT
Norsafe has developed the E-GES free-fall lifeboat in close co-operation with DNV-GL and NMA (Norwegian Maritime Authority). The purpose of the project was to assess the feasibility of an electrically powered free-fall lifeboat concept with the goal of minimising the operation and maintenance costs associated with lifeboats. Norsafe’s GES 45 free-fall lifeboat, which is already built in compliance with DNVGL-ST-E406, was the basis of the study. All diesel related propulsion equipment was removed and replaced with an electrically driven system.
The study involved a full design and testing programme as DNVGL-ST-E406 and included CFD simulations, scale model and prototype testing. It has been demonstrated that electrical propulsion is a realistic alternative for free-fall lifeboats.
BENEFITS OF THE E-GES FREE-FALL LIFEBOAT:
- Significant reduction in OPEX cost
- Remote monitoring of equipment from bridge and onshore locations
- The driveline can be remotely started and stopped, and performance recorded, without personnel entering the lifeboat
- Environmentally friendly with no emissions or fluid spills
- Reduced requirement for on-board checks and inspections
- 90% reduction in air bottle capacity, saving weight and maintenance
- No need for diesel fuel reducing problems of supply and contamination
- Redundancy is given by a battery management system (BMS) meaning that, in case of failure or damage, the lifeboat is still functional even with one battery - so there is full redundancy
- Increased safety during sail away because of higher top speed
- High level of personnel comfort when at sea due to climate controlled environment as well as reduced noise and vibration
- Electric installation has been designed as DNV-GL and NMA requirements
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