The containerized solution provides a safe, compact, and space-efficient solution for housing batteries on board a ship, either on the deck or below deck. Multiple containers can be combined to create larger energy storage capacities, providing scalability based on the ship's. Essentially, a shipping container energy storage system is a portable, self-contained unit that provides secure and robust storage for electricity generated from renewable sources such as solar and wind. The batteries and all control, interface, and auxiliar equipment are deliv-ered in a single shipping container for simple instal-lation on board any vessel. It is far more than just batteries in a box; it is a sophisticated, pre-engineered system that includes battery modules, a Battery Management System (BMS), a Power. The electrification of marine applications 1, including marine vehicles such as ships or other transportation methods, as well as newer innovations like submerged data centers and offshore battery energy storage 2, will make high performance batteries anything from a valuable asset to an essential. The Corvus BOB (Battery On Board) is a standardized, class-approved, modular battery room solution available in 10-foot and 20-foot ISO high-cube container sizes. The complete energy storage system (ESS) comes with battery, battery monitoring system (BMS), HVAC, TR exhaust, and firefighting and. Together with our partner Lehmann Marine, a leading supplier of safe and compact maritime battery systems, we have jointly developed the eCap Battery PowerPac for the maritime industry. This containerised and mobile Battery Energy Storage System (BESS) serves as a flexible and scalable power supply.