Here is a small selection of equipment I’ve previously built for the marine industry.
Although I built this equipment, the strategic & conceptual design rights belong to other parties.

Ship manual control panel

Ship DC control switchboard

Full main switchboard for a small ship

Portable solar control & satellite comms (unfinished)

Inside behind a synchroniser

Wiring I/O on a plc

Frequency Drive and ancillary controls

Sailing battery select & isolators

Connection of 2 x 200Ah lithiums

Solar, DC-DC & wind charger

Inverter connection

PA amp connections

Tinny charger & battery isolators