You have room to add more length to the port penninsula area.A Port needs room, not just for the water, but for the supporting structures. A small port yard is a good idea. A Big port should have a larger yard.For example, if you will have grain elevators the yard will be very large. Inbound Coal, Limestone, Etc will need to have a good sized area for stockpiles (these really flavor a port area and can add alot of operational value to boot.) Remember, if it a seaport you could have a couple levels to your piers to deal with tides.If its a great lakes port tides are not a factor.Consider usin the entire outside edge of the penninsula as water.This gives you 2 sides for differant businesses. An example of a port area surrounded on 3 sides would be Rices Point in Duluth,MN The NP had(and the BNSF has) A large yard here.Facing the yard throat there are several grain elevators and a wood products factory on the left with several bulk mineral dealers on the right, a cement plant and many years ago an Old dock for loading Ag products (new docks are at the top left beond the grain elevators.) Heres an aerial view of the area i'm talking about. Modeling a penninsula on a penninsula is a natural. Compressing this would be a must when you consider that at 1 time there were 7 large grain elevators in this area This is only to give an idea of how a penninsula could be done.