Sea Technology

JUL 2017

The industry's recognized authority for design, engineering and application of equipment and services in the global ocean community

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Page 23 of 68 July 2017 / st 23 W hile today's day and age is driven by instant gratifi- cation and continually enhanced digitalization—and the marine industry is no stranger to adapting to Industry 4.0 and addressing the needs of connectivity driven by the Internet of Things (IoT)—environmental friendliness, cost efficiency and safety are timeless requirements for marine battery manufacturers. With Saft's proven track record and commitment to these industry requirements, Rolls-Royce selected Saft to provide the lithium-ion (Li-ion) battery technology to integrate into its environmentally friendly hybrid propulsion system for the RRS Sir David Attenborough polar research vessel. Proven Technology, Enhanced In order to meet the demands of its exploration expedi- tions and transit through some of the world's most frigid wa- ters, the new polar research vessel requires precise battery system specifications to ensure reliability. Saft created a cus- tomized battery solution developed distinctly to meet the high power needs of the polar research vessel. The battery system is based on Saft's proven Seanergy 48P high-power module, with higher voltage, power capability and cooling efficiency to accommodate the unique needs of the vessel. Two of Saft's specialized Seanergy marine Li-ion battery systems, within 21 cabinets, will help power Rolls-Royce's diesel electric propulsion system, coupled with the new Bergen B33:45 engines. Together, the battery systems will provide 1,450 kWh of capacity with a maximum voltage of 1,011 V and will be assembled into the vessel's control and automation system. The power provided by the cutting-edge technology will assist the vessel with peak power, especially within dynamic positioning mode. For this vessel, superior dynamic positioning will help with successful scientific in- strument deployment. With Saft's customization capabilities, these battery systems are sized so the vessel can run on voyages up to 19,000 nautical miles while maintaining self-sufficiency in fuel. Moreover, the Li-ion battery systems will empower the vessel to push through ice up to 1-m thick. Also, the Li-ion technologies will help the vessel tow equipment over the side with minimal underwater radiated noise to minimize disruption to marine life and obstruction of survey equip- ment. Saft's Li-ion Super-Iron Phosphate (SLFP) technology, which has certifications from Bureau Veritas, Lloyd's Regis- ter and DNV GL, will be embedded in Rolls-Royce's over- all system. With its modular design, this technology allows for custom-builds to accommodate myriad applications' power and voltage requirements. It is adaptable to various types of usages and operations, and provides high power in a compact size. Saft's technology makes it possible to avoid oversizing a battery system, resulting in weight sav- ings that translate into environmental and cost efficiencies. With SLFP's high efficiency and power output, fast-charge capability and long calendar and cycling life, it is an ideal battery solution for civil marine purposes. Crews can rest easy with the knowledge that the batteries on board provide reliability, even across wide temperature ranges, as well as paramount safety and security. Furthermore, the architec- ture of SLFP has extreme resilience to electrical and me- chanical abuse. Advanced Polar RV The RRS Sir David Attenborough polar research vessel will be one of the most advanced of its kind when it sets sail in 2019 to carry out oceanographic and various scientific work in the Antarctic and Arctic regions. It will also haul supplies to Antarctic research stations. With its technologi- cally innovative design, the ship will be able to travel for 60 days unsupported. This equates to 35,000 km, or the ability to completely circle Antarctica twice. Sailing throughout the entire year, the vessel will assist with Arctic research cruises during the northern summer, then support research pro- grams and complete transportation tasks amid Antarctica's austral summer. Equipped with a helideck and hangar, the vessel will accommodate up to two helicopters, allowing for tasks with airborne scientific instruments and supporting teamwork with other polar research initiatives. Currently the biggest commercial shipbuilding contract in Britain, the vessel will be operated by the British Antarctic Survey (BAS), commissioned by the United Kingdom's Natu- ral Environment Research Council (NERC). Li-Ion Batteries Power Polar RV Through Ice Seanergy Meets High Power Needs of Sir David Attenborough By Annie Sennet

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