Abstract: A camera head for use in a marine environment having a cylindrical watertight housing, top and bottom plate members closing the cylindrical housing, and a plurality of ports through the vertical wall of the housing and positioned at a regular angular intervals. A transparent pane is sealed over each port, retained in place by compression against a gasket or O-ring by a compression member. A corresponding plurality of cameras are fixedly positioned behind the ports and the angular field of view of each camera is selected to be greater than the angular interval between the ports such that a continuous 360-degree view of the marine environment is always visible. Six 72-degree FOV cameras spaced at regular 60-degree intervals are preferred. The housing contains cooling/ventilation as well as power and image processing and control systems so as to be self contained.

Abstract: A switch is connected to a wagon for electrically powering the wagon. The wagon has a frame having at least one wheel for movement along a surface. The wagon further has a bar connected to the frame, the bar having a handle. The wagon further has a battery connected to a motor mounted on the wheel for powering the wheel. The switch has a wire shell having a first lead extending therefrom and adapted to be connected to the motor. A pipe member has an insulator ring mounted on the pipe member. The pipe member has a second lead extending therefrom and adapted to be connected to the battery. The wire shell is positioned over the pipe member and ring wherein the ring maintains a space between the wire shell and the pipe member to define an inactivated position. The wire shell is resiliently deflectable to a second position contacting the pipe member to define an activated position wherein an electrical connection is made powering the wheel of the wagon for movement along the surface.