Figure F20. Schematic diagram of the seawater battery (SWB) system. The SWB system consists of four SWB-1200 cells, a canister containing the 24-V DC/DC converter and the power control system (PCS), and the canister of the accumulator and the data logger (DL). The DL is connected to the PCS using an underwater mateable connector (UMC). The PCS can be accessed using a remotely operated vehicle (ROV) when the DL is disconnected. CF = compact flash, Rx = receiving line, Tx = transmitting line.