Cargo ship model

Respected members,

I have model a cargo ship in rhino please let me know the model is ok or not and what correction must be needed i also attach the file and if the model is not in proper shape or something error so please let me know what is the correct method and tool to model the ship step by step for 3d printing

thank you

cargo.3dm (3.0 MB)

There are a number of places that this could be better. Generally, create the surfaces then join them together to mke a closed poly surfaces.

Here is how to approach a hull:

And then After that here is how to make sure it is closed:

thanks for the reply