What is it?
Guys, Well it ain't a shore power connector, it's the cockpit view of a Whale gusher manual bilge pump. There should be a stainless steel handle with black knob aboard that will fit that hole in the center of the yellow ring. If the pump does not work, don't toss it. They're easy to disassemble and can in most cases be cleaned and put back together. The biggest problem aside from corrosion is that crud and slime collect under or near the hinge points of the flapper valves, thereby preventing them from closing. I also had one fail due to a sliver of plywood stuck in the flapper valve aperture. Clean it, repaint it and restore it to service. After that's done, go look for your shore power socket. On a more serious note, I have a friend who owns a mid 1970's E27 clearly equipped with an owner installed, industrial grade (not marine) shore power receptacle on the cabin side. This suggests to me that the boat did not come with shore power. Was it the case that such things were an option back then? Glyn Judson, E31 hull #55, Marin del Rey, CA