“So, for the Love of God, can we now switch back to Common Law and restore our Republic?”
I think you might be confusing Admiralty Law with Maritime Law....
Admiralty and Maritime laws have more in common with each other than either is to Common Law.
The 3 main divisions of law are law of the water, law of the land and law of the air (ecclesiastical law).
From the below link, "admiralty and maritime law are largely considered the same thing, and the terms are used interchangeably."