The Tunnel Boat Design Program (TBDP©) is a PC-based computer program that makes the analysis and design of all types of tunnel hulls, power catamarans, modified tunnels, vee hulls and vee-pad hulls extraordinarily fast and simple. The TBDP© incorporates the same design approach as documented in the Secrets of Tunnel Boat Design book (©1982-2010), including detailed calculation methods that are the key to proper Tunnel hull design.  Great for recreational, commercial, high performance and racing tunnels, powercats and vee hulls.

Proven with full scale hull testing, wind tunnel testing, water channel testing.  Predictive results +/- 1% or better!

What can TBDP do?
Questions:  How fast will my boat go?  Will a center-pod help my performance?  What happens if I shift weight in my setup?  Will my boat porpoise?  At what speed does my hull experience the "hump zone"?  How much faster is my hull if I increase HP of my engine? What happens to my performance if I raise my engine by 1/2 inch?  Is my boat faster with....wider sponsons?  more trim?  less deadrise? smaller tunnel depth?  What is my acceleration time in 1000ft?

The User can quickly: predict maximum speed and hull performance for the complete hull velocity range; optimize hull design and setup for specific operating expectations; test hull modifications with the software for expected performance BEFORE changing the boat; design new hulls for optimum performance; analyze performance characteristics in detail, including dynamic balance, all hydrodynamic and aerodynamic Lifts & Drags, HP requirements, trim angles - even porpoising analysis; compare performance of old design with new design with on-screen graphics. TBDP© takes the dramatic costs and expensive time delays out of traditional "trial-and-error" design processes.