Our first priority is to design the safest boats on the water. Within our designs, all structural components and spaces are filled with 100% composite closed-cell PVC foam for maximum buoyancy and flotation. Every BMD boats, from the smallest to the largest, are designed to exceed exceeded all industry standards for unsinkability, for your peace of mind.
Can a well-designed deep-vee powerboat be efficient?
Some people will tell you a flatter bottom is going to be more efficient. Well, there is no simple answer. There is a lot more to what makes an efficient boat than just the shape of the bottom. Also, when people say deep-vees are hard to push, they are really talking about a whole generation of boats that were, and are overweight to begin with, whether it be production or home built. These boats being heavy, overweight and using outboards not suited to the design, are not going to be efficient no matter what kind of bottom they have. We do a lot of our engineering & designing based on bottom loading, careful weights and moments analysis and more. And with a sharp entry point, the deep-V hull found on all BMD boats has a high entry angle that delivers a smooth dry ride by displacing water away from the boat ,while a wide bow flair keeps it from rolling back into the boat. Also, our hulls also feature a higher degree of deadrise at the transom for added stability in rougher seas.
Are BMD's deep-V hulls unstable at low speed or at rest ?
No. As BMD-designed hulls carry their chines lower than the waterline, the chines are still immersed during the transistion stage from displacement to planeing speeds. The large chines on BMD hulls deflect water down and under the hull, acting as two points on which it balances. These points provide a great deal of dynamic stability for a more solid ride while also increasing lift and reducing drag for a faster more efficient running hull. This does not adversely affect performance because, at the boat begins to plane, it rises slightly and the chine is less immersed. That is part of the process in planing boats of reducing surface area, one of the components in drag. At rest, immersing the chine makes the waterplane wider and the boat more stable. By careful detailing the weights and moments of all our designs, we ensure that the centre of gravity is kept low ensuring stability not only at rest but also whilst on the plane. In other words, we design boats, not simply just draw them
Is transom deadrise an overused - even misused - specification?
Deadrise at the transom tells you something; it is not a useless piece of data. But there is a huge amount of variation from there. A lot of boats, if they have 20 degrees at the transom, also have 20 degrees in the midbody. Along with a very fat bow to hold a lot of accommodations, they fail to get the benefits of that kind of hull because they are making compromises for the interior space. If one of our boats is 20 degrees at the transom, it'll have a 25- or 26-degree deadrise in the middle of the boat, with even more at the bow... where it counts. Also, we don't fatten the bows of our boats much, prefering to keep the bows sharp to slice thru the waves and not ride over them. We make the hull the way we want it.... and then put the interior in it.
Has the deep-vee changed much over the years?
If you look at some deep v hull forums, some are basically very good rough-water boats, however due to poor hull design, require a lot of power. They were known for rolling while you were trolling because they had small chines and the centre of gravity is too high. One of the benefits of deep v deadrise is if you fly through the air and land on the stern like a raceboat, you want all the deadrise you can get. But with 90 percent of the boats today, nobody does that except by accident, so we've evolved the geometry of the bottoms with radiused keel sections and carefully proportioned running strakes and chine flats to optimise performance and ride. Overall, you maintain the ride of the old deep-vees, but the boats are going to be drier, smoother in their ride, creating more lift and less drag resulting in less horsepower to operate.
What's wrong with today's powerboats?
There is a tendency today to put more "stuff" into a boat. Go to any boatshow and look around. The boats are crammed solid with what most of the time is useless "toys" not really suited or warrented for the design. Unfortunately, it's all these "shiny toys" that sell and the buyer unfortunately rarely looks at the hull. Overall, they make the boat more complicated, harder to take care of, expensive and maybe not very efficient because they are carrying all this extra weight. Also, people end up with boats they don't like, because they are not comfortable riding. They get on their boat thinking it should be capable of getting from A to B in certain kinds of weather, and really the boat is not suited for those conditions. In the end, people turn off boating because really, they had the wrong boat for the job they were looking for.
BMD set's a completely new standard for strength, power and versatility. Stylishly designed to turn heads, but thoughtfully engineered for function and comfort, our boats are designed for individuals who are serious about having fun on the water.
THE BMD ADVANTAGE - OUR DEEP V HULLS
With the best technical support: we will help you succeed!
@ WEB DESIGN BY BOWDIDGE MARINE DESIGNS
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Designed Boat Plans
Boat Designs with "Reel Flare"
We have boat plans (both yacht designs, catamaran designs and power designs) for all sizes for the amateur boat builder and Professional boatbuilder. From the 12ft Mushulu plywood stitch & glue power boat design to the Oceansky 57 strip plank composite multihull design. We design and build, plywood boats, strip plank boats and fibreglass composite boats to very modern styling for both yacht designs, multihull designs and power boat in round bilge, multi-chine or radius chine hull forms, including aluminum drift boats, aluminum landing craft, aluminum monohull boats, aluminum catamarans, aluminum special purpose boats, and aluminum RIBs
Bowdidge Marine Designs
Performance Boat Designs with "Flare"