Hull Reinforcement

The Hull Reinforcement is an upgrade module that can be crafted in the Vehicle Upgrade Console.

It provides the Seamoth and the Prawn Suit a permanently hardened chassis before collision, eliminating damage under normal conditions.

Effect
Hull Reinforcement doesn't work exactly like the description says. My testing found that it reduces damage from ramming and bumping into things by half or 50%.

Untested on other ways to take damage as such from "aggressive fauna" (creatures) and heat damage.