The battery pack is type approved by China Classification Society (CCS), with protection level of IP67, and supports liquid cooling and air cooling (the cooling method can be selected according to different charging and discharging multiples). The battery pack adopts the mainstream 280Ah cell, which has the advantages of large capacity, high energy density, high assembly simplicity, and high flexibility to match the power demand of different new energy vessels and the DC voltage demand of DC-bus system.