Hi
excellent idea.
Here's a model that you might be able to use as a base.
https://www.cgtrader.com/free-3d-models/watercraft/historic/titanic-dummy-1912-04829d6ebe10f840c4629732f8728f2c
Unless you're learning modelling at the same time, but... Modelling Tip #1 use every polygon you can get...