Never swim in a marina! BoatTest discussed an isolation transformer

Add an Isolation Transformer to Your Boat – BoatTest

First, if you just remember one thing from this article, remember – never swim in a marina.

Why? Because in a marina, you have people, water and electricity. When everything is working properly, that is a recipe for fun and great times. But, if just one wire chafes through its insulation and shorts to ground, there is the potential for tragedy.