A computer controlled robotic system that autonomously adjusts the location of a floating marine dock whenever water levels change in a body of water (e.g., a lake or reservoir) to maintain sufficient draft clearance for safe boat operation and ensure safe access to the dock. The system is comprised of an electric motor-driven tractor device attached to the shore-end of a walkway and a pair of electric-motor driven cable winch assemblies with a distributed control system to move the floating dock toward or away from the shore to maintain a relative desired water depth for safe boat operation and positioning in relation to the moving edge of the water shoreline. The tractor and winch motions are controlled by a combination of on-board (dockside) microprocessor and web-based computing that utilizes software to process location telemetry from distance measuring sensors such as Light Detection and Ranging (LIDAR) sensors, Global Positioning System (GPS) data, and a compass bearing to calculate the incremental actuations of the tractor and winch motors. FIG. depicts the system's main elements installed on a marine dock floating near the water's edge (shoreline).
A cable tray system including cable trays formed of a first side rail and a second side rail arranged substantially parallel to one another and transverse rungs extending between and connecting the first and second side rails. The first and second side rails each include a vertical web, a portion of which is inwardly protruding. The cable tray system further includes a splice plate for splicing or joining multiple cable trays. The splice plate includes a vertical web, a portion of which is inwardly protruding, wherein the inwardly protruding portion of the splice plate cooperates with the inwardly protruding portion of the first and second side rails. Holes in the first and second side rails can be aligned with holes in the splice plate through which fasteners may be inserted through to secure the splice plate to the side rails.