Model 68
Meant for underwater exploration.
Strong hull help it manage the massive pressure underwater in deep areas
Powerful engines are meant to work underwater and have no problem to blast thru seaweed and run away from dangerous sea creatures.
Its 4 powerful lights will make seeing underwater easy and its small size helps it to get to small places.
It is meant for one person
Now first i sculped it in sculptris that is a free sculpting program and then i imported the model into blender where i i made retopology to it and also made the water for the first picture and then added the materials for my submarine. Firts time i used sculpris but it wasnt hard to understand the program so far.