b'MEMBER NEWSAll American Marine to Construct MEMBER NEWSBattery-Electric Vessels for San FranciscoA llAmericanMarine(AAM)sionsvesselswillreducegreenhousefrictional resistance of the shape was recentlyannounceditspart- gas emissions and improve air qualityoptimizedtoensureminimumdrag nership with fellow PVA mem- in the region. The vessels also will fea- and power requirements.berSanFranciscoBayFerrytobuildture dual 625-kilowatt electric motors their150-passengerbattery-electriccoupled to steerable propulsion pods. Construction of the vessels will take vessels. This project will contribute toplace at AAMs facility in Bellingham, advancing sustainable passenger trans- Theproposedseatingdesignincor- Wash.,afterwhichthevesselswill port in the San Francisco Bay Area. porates an open lounge-style interiorundergo sea trials. The zero-emission with fixed seats and bar stools as wellvesselsarecurrentlyplannedtoop-The concept vessel was initially devel- as exterior bicycle racks for up to 26erate on routes that will connect and oped by another PVA associate mem- bikes on the bow arranged in a mannerservetwoofSanFranciscosfastest ber, Aurora Marine Design, based inthatdoesnotimpedeembarkation.growingneighborhoods,Treasure San Diego, as part of SF Bay FerrysItalsoincludesdefinedwheelchairIsland and Mission Bay. The contract Rapid Electric Emission-Free (REEF)locationsandwheelchairaccessibil- awardedincludesanoptionfora Ferry Program . The vessels will featureity throughout the vessel, as per thefourth 150-passenger vessel.abattery-electricpropulsionsystemspecifications.Thevesselwillcarry designedtoprovideefficient,emis- upto150passengersandfourcrewOver their projected service life, these sion-free operations in the Bay Area.members at a cruising speed up to 24vessels will play a pivotal role in sup-Each 100 x 26 aluminum catamaranknots. In designing the hull form, sev- porting SF Bay Ferrys mission to alle-will integrate a comprehensive hull de- eral important criteria were taken intoviate traffic congestion, reduce carbon sign technology, offering an extendedconsideration.Thehighestpriorityemissions,andprovideasustainable waterline that reduces drag, improveswastoensurethatthepressureandalternative for Bay Area commuters.performanceefficiency,andoffersa smooth ride for passengers. Designed to operate at speeds of 24 knots, the vessels will offer rapid, quiet, and en-vironmentally conscious ferry services.The battery-electric vessels integrated propulsion system will be provided by Wrtsil. The power provided to the vessels system will come from a shore connection and be accumulated in the battery energy storage system (BESS). The BESS is comprised of lithium ti-tanium oxide (LTO) battery modules. Thebatteryarchitecture,coupled with the AAM proposed hull, allows for two BESSs, one in each hull. Each BESS is made of a total combined en-ergy storage of 437 kWh (218.5 kWh per hull or system). These zero-emis-49 DECEMBER 2024'