Floating submarine

This is a new version of my first submarine (https://www.thingiverse.com/thing:2774290) This submarine bigger and there is a bolt in its bottom. This bolt makes submarine more stable on the water. I used 30 mm bolt. The diameter is 4 mm.

Here is another version of a submarine: https://www.thingiverse.com/thing:2774290

You may also like balloon boat:https://www.thingiverse.com/thing:2800577
And a steamboat: https://www.thingiverse.com/thing:2800309

More information about this model - h