Semielliptic Trimaran

grabcad

Semielliptic Trimaranan outsider entry, trying to apply aerospace design and a completely from scratch design approach to ship hulls to give a few at least interesting ideaswetted part:depth: 6400mmtotal beam: 93078mmtotal length: 120871mml/b ratio: 1.2986center body l/b ratio: 8.156side body l/b ratio: 7.767average body l/b ratio: 7,897wetted area: 5872,7m²total waterline: 708,63mcenter of lift: 58873mm ahead of the submerged parts rear 2384mm below watercenter of lift in file coordinate system: 0 -1791,86 58873,08estimated total water drag at 20knots design speed combined from several simulation techniques: 1000kNInnovations:Trimaran shape, allowing to combine long narrow shape with stability as well as practical needs and reusing parts of wave energy by catching waves at the next bodies tailSemielliptic body shape, each of the three main floaters follows an almost but not quite elliptic basic shape which is an ideal compromise between reducing energetic, pressure and wave loss and reducing viscous friction while keeping stability, including a ssomewhat blunt flattened nose following aerospace design wisdom to use a small high drag area to break up the front wave and reduce drag along the rest of the bodyWavedampener, a small wulst along but slightly below the waterline around each body which dampens wave creation and thus conserves energybrushed skin: it is difficult to keep a ship skin perfectly smooth but by slightly brushing it along the calcualted direction of flow / streamlines this problem can be reudced while it will create a little bit more viscous drag it vastly reduces the amount by which viscous drag increases over time and can be used to guide the stream of water along the hull