An active deck suspension system for use in marine vessels having a hull and an operator deck. A custom chassis includes pneumatic cylinders which absorb impact forces acting upon the boat hull or suspension deck, and also includes auxiliary emergency jacks. The chassis includes an upper support member which is affixed to the suspension deck, and a lower base support which is complementary to, and mates with, the bottom of the hull. The suspension deck will deflect, in a controlled manner, upon the boat encountering impact forces created by rough seas, or the like. The system includes control circuitry and constantly monitors the suspension deck to automatically compensate for load forces, and thereby provides a substantially improved occupant ride.