Both pictures below are looking at the left side of the engine. What are these and what do they do?
In this pic the starter is on the right, and the black threaded pipe looking thing is stuck to the hull. It's filled with water right now, is that ok? It collected while I was cleaning the boat during my engine repair. And what is the line coming out of it for?

In this pic the starter is on the right, and the black threaded pipe looking thing is stuck to the hull. It's filled with water right now, is that ok? It collected while I was cleaning the boat during my engine repair. And what is the line coming out of it for?
