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Linking Hull Shape to Powering Ship science links the heritage of maritime design, and the potential of modern scientific knowledge. A refined hull shape epitomizes that link between tradition and science. A modern naval architect carefully designs the hull shape based on previous examples and the science of hydrodynamics. This article glimpses into the […]
Monohull, catamaran, trimaran . . . so many choices. Which hullform to pick? Can we draw upon any science to guide our choices, or we beg Lady Luck to guide us? This article provides a rational and design map for selecting hullforms applicable to any type of mission. This organized approach allows us to see past the limitations of historic examples and consider new alternatives.
How man tons in a pound? When ships weigh thousands of tons, you really need to know which type of ton. So take five minutes and get clarity on the esoteric measurements of ship design.
An experienced engineer doesn’t have some magic button to deliver great FEA. Masters of FEA trade-craft hoard many little tricks and nuggets of wisdom to deliver better FEA. These tricks yield better ways to detect human errors and ensure model reliability. Or methods to deliver faster results. Today we share six nuggets of wisdom for better FEA.
Axe bow, X-bow; slim size, thin size. We currently enjoy an explosion of variety in bow shapes, each suited to a different task. These may all look the same with a cursory glance, but don’t get fooled. Nearly the same bow shape, used on a different vessel may work for entirely different reasons. This time […]
Monohull, catamaran, trimaran . . . so many choices. Which hullform to pick? Can we draw upon any science to guide our choices, or shall we beg Lady Luck to guide us? Although hullform selection does involve some experience and artistic preference, naval architects definitely utilize a scientific framework when selecting hullforms. This achieves the […]
ZOOM!!! No better way to describe planing boats. They pack very fast speeds into a very small package. Many planing boats achieve speeds well beyond the limits of larger craft. How do they do it? And what are the penalties for this extreme speed? Discover if a planing hull fits your next design. 1.0 […]
Welcome to luxury cruising. Glide above the waves without any jerky motions. Walk about your accommodation deck, unhampered by nasty rolling motions. If this temps you, come realize the dream of the SWATH vessel. But it comes at a price. Discover if this unique vessel is right for you. 1.0 What is a […]
Three hulls are better than one! That would be the adage of the trimaran. It consists of one central hull with two smaller side hulls, called amas. The average person conceives of the trimaran as something even more extreme than catamarans. Lighter weight, higher speed, more specialized. The opposite is actually true; trimarans fill an […]
What distinguishes a yacht designer from a ship designer like myself? Practicality. Commercial ships only consider practicality; aesthetics never gets considered. Personally, I pine to see a little more beauty in commercial vessels. But this ruthless discipline of practicality provides unique insight into yacht design. Many yacht designers are equally qualified and use the same […]
Hull speed is bogus, but not because the math is wrong. This formula supposedly predicts the maximum speed of a yacht based solely on length. It gets discussed frequently in sailing yacht communities. Surprisingly, hull speed is partially correct, with a very simple and strong theoretical basis. But don’t sell yourself short; there are ways […]
Tips to Improve Your FEA Model No matter how much work you do in finite element analysis (FEA), there is always room for improvement. Masters of FEA trade-craft hoard many little tricks and nuggets of wisdom to deliver better FEA. These tricks yield better ways to detect human errors and ensure model reliability. Or methods […]
Why FEA Singularities Are Acceptable 1.0 Introduction You stare in dread at the FEA results, which show unbelievable stresses in small spots at the corners. Don’t panic; they are only stress singularities. Small regions where the FEA predictions are completely wrong and the math failed. What reason is there for concern? Stress singularities are very […]
FEA Errors from Mesh Size 1.0 Introduction When was the last time you actually tested your finite element analysis (FEA) results? Are you sure that every FEA analysis ever ordered is accurate? Will you trust your life to it? In truth, FEA results can be wrong. In most cases, the error originates with the […]
Get The Most From Your FEA Report 1.0 Introduction The engineer delivered a shiny new FEA report, but what does it mean to you? What details to look for? Are the results good or bad? An FEA report contains much more value when all those colorful graphs reveal their meaning. Today we unveil the secrets […]