Abstract: According to embodiments of the present disclosure, various methods, apparatuses, and computer program products for cryptographic authentication of components in an electric vessel are described herein. In some aspects, a first device of a plurality of vessel powertrain components receives a first authentication message from a second device of the plurality of vessel powertrain components via a control area network. The first device identifies, based on the first authentication message, an encryption key, a cleartext message, and an encrypted message. The first device authenticates, using the first encryption key, the second device based on the first cleartext message and the first encrypted message.

Abstract: Embodiments for a battery pack for an electric marine vessel are described herein. In a particular embodiment, a battery pack for an electric marine vessel comprises a waterproof chassis, a high voltage battery comprising a plurality of battery cells disposed within the chassis, positive and negative high voltage connectors disposed on a front flange of the chassis, a manual disconnect connector disposed on the front flange of the chassis, and a signals connector disposed on the front flange of the chassis, the signals connector configured for signal communication with at least a power distribution unit and a vessel control unit. A battery management system disposed within the chassis and coupled to the signals connector comprises a battery management controller, a plurality of relays operable by the battery management controller, and a plurality of sensors electrically coupled to the battery management controller.