There is more details, but the evolution has been outstanding.
Throttles- Cleveland Construction 377 Talon
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Obsolete and proud of it
Todays Offshore cats are not very different from the early designs with two exceptions.
- They are MUCH lighter due to newer materials
- The tunnels tend to be wider
At the end of the day the increase in power and prop technology is the main reason the current cats are going so fast. When we built the original Shadow cat we felt like 115-120 was the absolute maximum speed potential. There's a guy in Louisiana I believe who has brought his up to over 150.... proving it's all about the power and propulsion.......
There's a lot of mumbo jumbo around the "design skills" of some of our current cat builders. Give me a builder with the most years of experience....because in high performance boats .....the top guys in the field learn a lot more from trial and error....then from computers.
Obsolete and proud of it
Tunnel hulls are distinguishable from other catamarans by the typical close hull spacing and solid deck in between the hulls.
After much real life testing and at the convention in Trondheim, Norway - 1989, ground effects in contained form became an applied science.
There is more about how Reynolds Numbers fall into this subject, but it's a long science. You are 100% correct, All the years of trial and error proved that it is a science and not art form.
It is actually a way to quantitatively compare, as a ratio, the two primary forces, inertial and viscous, in a specific flow condition. I remember lots of pages of discussion in my paper on transport phenomenon, regarding laminar flow, boundary layers, transition layers, and turbulence, all correlated to changes in the surfaces, expressed with Reynolds Numbers.
Very dull tedious stuff at the time...who knew...years latter...knowing this stuff makes you understand how we go so fast.
No question, there is allot of science in how we go fast.
Trial and error or science, they both get my vote.
2004 Stingray 230LX
Canon 7D | EF-S 18-200mm f/3.5-5.6 IS
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