Do you have enough clearance to drop the oil pan without unmounting the engine? After two weeks, and with that problem, you might want a mechanic to pull the head and inspect the cylinders (that can be done with a borescope without pulling the head, but most mechanics pull the head) and deal with the rest.
If I had to guess, you could install a heat lamp to warm up the oil pan and perhaps add in some kerosene to help dissolve it, then pump the whole mess out. But if it has really congealed...that might only give you a bigger mess.
Odds are the oil pump is jammed with goo and needs to be rebuilt as well, and any wiring that was under salt water for ANY length of time, is probably rotting out as we speak, and needs to be replaced before it also fails. Including the alternator.