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![Jack_Hudak-logos_transparent[1].png](https://static.wixstatic.com/media/660584_68e2f3df3cc549e2a04b0f25fa712477~mv2.png/v1/fill/w_80,h_80,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/Jack_Hudak-logos_transparent%5B1%5D.png)
CK-40
(Go-Fast Boat)
For this project I designed a boat of my choice. I chose to do a go-fast boat. Throughout class we touched on stepped hulls but didn't go into depth. I decided to do a stepped hull to learn how to design and how a stepped hull works.
My first task was to develop a hull and create lines plans. After dozens of designs and tweaks I decided on the hull above. I initially designed a hull and ran a CFD report to get a baseline. After the baseline I began cutting the steps into the hull. I ran several more CFD simulations on these hulls to get the optimum hull. Below I included a picture of the CFD report. This displays the waterplane area of the stepped hull at 90Knts.
After I selected a hull, I began laying out the structure of the boat and calculating laminate thickness. I elected to use ABS building standards on my boat. I calculated the hull thickness the boat as well as stringer/frame spacings. I began with placing the engines and drive units. The engine mounts determined the stringer spacing. The bulkheads were in specific locations. Starting at the front, the first bulkhead is a collision bulkhead. The second was calculated to be needed to support the span between bulkhead 1 and bulkhead 3. Bulkhead 3 was placed at the companion way. Bulkhead 4 was placed at the front of the engine room. This one is thicker to allow for fire protection and noise dampening.
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