Abstract: A modular configuration of a workboat including a main deck. The workboat includes an engine operators station including one or more variable frequency drives and one or more switchboards to manage propulsion of the workboat. The workboat also includes one or more battery sets, wherein each of the one or more battery sets includes a plurality of batteries contained in a battery set container, wherein at least one of the one or more battery sets is coupled to one or more systems of the workboat that require energy. The battery set containers may be moved using a rail structure of the workboat below the main deck. The one or more battery set containers may be moved back and forth below the main deck for transfer in and out of the workboat.

Abstract: There is disclosed a dual rudder system and method of improving the maneuvering ability and versatility of marine vehicles in navigable waters. A dual rudder steering assembly may be utilized in conjunction with a propeller of a marine vehicle. Moreover, multiple dual rudder steering assemblies may be utilized in conjunction with multiple propellers. A system for retrofitting existing marine vehicles with the disclosed devices is also disclosed, as well as a method of retrofitting existing marine vehicles with the steering system. Therefore, the disclosed steering system is compatible with pre-existing steering controls.

Abstract: There is disclosed a dual rudder system and method of improving the maneuvering ability and versatility of marine vehicles in navigable waters. A dual rudder steering assembly may be utilized in conjunction with a propeller of a marine vehicle. Moreover, multiple dual rudder steering assemblies may be utilized in conjunction with multiple propellers. A system for retrofitting existing marine vehicles with the disclosed devices is also disclosed, as well as a method of retrofitting existing marine vehicles with the steering system. Therefore, the disclosed steering system is compatible with pre-existing steering controls.

Abstract: A spring-loaded flap rudder or flap stabilizer adapted to be mounted to the hull structure of a ship. In a geared version of the invention, the rudder or stabilizer includes a member and a gear including teeth. The rudder or stabilizer also includes a flap member pivotally connected to the member with a component, such as a spring, arranged to limit jamming between the gear and a movable flap gear. The flap gear includes a rod movably engaged in a socket of the flap member and gear teeth for engagement with the teeth of the gear.

Abstract: A spring-loaded flap rudder adapted to be mounted to the hull structure of a ship. In a geared version of the invention, the rudder includes a rudder member and a rudder gear including rudder teeth. The rudder also includes a flap member pivotally connected to the rudder member with a spring and a movable flap gear. The flap gear includes a rod movably engaged in a socket of the flap member and gear teeth for engagement with the rudder teeth of the rudder gear.