The shape of the boat hull is one of the most critical factors in determining how the boat interacts with the water and how it responds to different conditions. However, designing a boat hull is a complex task, as it involves complex physics and engineering principles. This is where Computational Fluid Dynamics (CFD) steps in.
CFD is a branch of fluid mechanics that uses numerical methods and algorithms to simulate the flow of fluids around objects. CFD can be applied to boat design to show how fluids and air flow around the 3D model and how it affects the boat's resistance, drag, lift, and stability. Using CFD, I can optimize my hull shapes for specific applications and scenarios depending on our client's requirements.
CFD is ideal for quickly analyzing wave patterns and resistance of a prototype hull. Resistance is the force that opposes the boat's motion through the water. It consists of several components, such as frictional resistance, wave-making resistance, and form resistance. Frictional resistance is caused by the friction between the water and the hull surface. Wave-making resistance is caused by the energy lost in creating waves as the boat moves. Form resistance is caused by the hull's shape and appendages, such as keels, rudders, and propellers. The goal of boat design is to minimize resistance and maximize efficiency.
I use CFD to provide insight into the hydrodynamic behavior of the boat hulls and to compare different design alternatives without building physical prototypes. A flow on from this is to optimize the boat hull shape and geometry to achieve the desired performance goals, such as minimizing drag, maximizing speed, or improving fuel efficiency. CFD can also help identify and resolve potential problems with the boat hull design, such as cavitation, ventilation, flow separation, and chine spray.
CFD is a powerful tool for boat design, but it also has some limitations and challenges. CFD requires a lot of computational resources and time to run complex simulations with high accuracy and resolution. This becomes very costly for small-scale projects. CFD also relies on mathematical models and assumptions that may not capture all the physical phenomena or effects that occur in real-world scenarios. CFD results must also be validated and verified with experimental data or measured against existing boat hull data to ensure the program produces reliable and accurate results. Therefore, CFD is not a substitute for physical testing or experimentation but rather a complementary method to enhance and support the boat design process. By using CFD in conjunction with other tools and techniques, I am able to provide my customers with a better understanding of what to expect from their new custom-designed pre-cut aluminium kit boat.
Congratulations to Morey Marine Boat Builders in Indonesia for another successful NTD pre-cut aluminium kitset boat build. The NTD-1050-SB, AKA the "SURF BOAT", is designed explicitly for charter operations for Indonesian waters. The Montoon hull is very stable, and the deep V offers exceptional speed with the twin 300 Suzuki outboards, reaching over 44 knots with a full load of 12 passengers and two crew.
Morey Marine International is now expanding operations to accommodate the construction of larger resort, charter, and government boats from Noah Thompson Design in New Zealand. The pre-cut aluminium kitsets are supplied from NZ and shipped to Indonesia for assembly. This ensures all materials, CNC cutting, and marking are quality controlled for quick and easy assembly of the kits by the builder. For more information about pre-cut aluminium kitset boats, please visit www.noahthompsondesign.com. For more information on purchasing a new custom vessel for Indonesian waters, visit www.moreymarine.com
RESORT OWNERS - DIVE MASTERS - WHALE WATCHING - WATER TAXI
The NTD-900-Day Cat is a versatile vessel that can serve various purposes such as resort transportation, diving tours, whale watching, and water taxi service. It is designed with customer feedback in mind to achieve the optimal balance between size, performance, and profitability. Our track record of delivering high-quality vessels for the tourism industry worldwide shows that our kits are tailored to our customers' needs.
This new GEN4 cat hull shape has been refined through years of experience and the new computer software for computational fluid dynamics to ensure a dry, smooth, and comfortable ride for the passengers. The layout can accommodate 8 passengers and 2 crew. The layout features a full head height toilet in the PORT hull and seating options are customizable to suit your specific needs, either during the design stage or on-site during the construction.
Noah Thompson Design pre-cut aluminium kits are a convenient way to ship a vessel to any location in the world. The kits are easy to assemble with the appropriate welding skills and setup. We offer ongoing technical support during and after the kit assembly. We are proud to state that we build a long lasting and working relationship with our customers around the world. Some customers are now onto 7th generation of new kit boats from our design office.
Noah Thompson Design pre-cut aluminium kits contain all marine grade plate CNC cut parts, with names and fold marks, the full inventory of aluminium extrusions, fuel tanks, water tanks, waste tanks, and a printed set of assembly plans. The pre-cut aluminium kits are packed into a designated container for shipping to ensure product safety. If you require fittings such as windows and doors, welding wire, cleats, rubber seals, hinges, latches, winches and anchors, we can provide this as well. Anything extra to be included in the kit shipment must be cleared with your local customs office before purchase of items from us in NZ, as there are some restrictions on importing certain items.
If the vessel is operating under Flag State survey requirements, please check with us about stability reporting and plan submission for survey.
Noah Thompson Design is focused on the right design for the right application. If you have specific requirements, budget constraints, or technical needs, contact us to discuss all the options.
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We're excited to share the news of our partnership with Lee Shore Boats and the new 33'x11.5' Landing Craft Catamaran launch. This fantastic vessel offers the best of both worlds: It features a bow landing ramp for easy shore access, a walk-through cabin for comfort and convenience, a roomy cabin interior that can fit up to 10 passengers, a large aft deck fishing area, and an inflatable boat stored on the hardtop that can be used for emergencies or exploration. The catamaran has a sleek hull for stability and speed and is powered by twin 300-hp outboard engines that can reach speeds of up to 38 knots.
NTD and Lee Shore Boat have created a line of custom catamarans that combine our creative design skills with master craftsmanship and experience. Our catamaran range is tailored to our customer's specific needs and preferences; whether they are looking for speed, comfort, luxury, or adventure, we help design and build a unique and practical craft that will take them anywhere they want to go!
48' BLACKFISH SEDAN is currently under design for production manufacturing. The design features a large useable top deck to carry all the water toys, a large aft deck with a multifunction rigging station, a modern interior, and a spacious forward master cabin. Powered with twin V12 600 HP Mercury outboards, the vessel will impress with speed and manoeuvrability. The construction is a composite foam core structure with solid laminate hull bottoms manufactured in Vietnam by a highly skilled team of boat builders. New vessels will start construction in mid-2023. Contact me for bookings and delivery dates.
The following information is to help you start that journey.
The process of a new vessel design is considerable and very time-consuming. There are many decisions and compromises to be made along the way. 80% of the design decision will be made by the designer based around 20% of the customer’s initial decisions for specifications for the vessel. So let’s look at some decisions that make up that 20%.
Once a concept design is established, further refinements are made by the customer and designer. Finally, when everyone is happy with the concept, the designer will start the laborious process of turning the concept into a fully working 3D model with a 2D planset ready for construction.
Give me a call or drop your details in the contact form for a no obligation discussion.
Today we put the Aluka 823 WA through its paces in the first water test with excellent results. The Suzuki 350 outboard pushes the hull comfortably to 38.9 knots in the initial tests. The deep V hull cuts through the chop nicely while keeping the boat dry. The forward-facing windscreen increases the cabin's comfort and gives a clear, unobstructed view. Docking is made easy with the forward bow thruster. Layout features include sleeping for two adults and one child when the dining table folds down. The galley contains a cooktop, oven, sink, and fridge. Accessed from the aft deck is a full head-height shower and toilet compartment. The aft deck is comfortable for four people fishing and relaxing. A full spec of the Aluka 823 WA will be available soon.
Lee Shore Boats in Port Angeles Washington USA are busy with numerous designs from NTD. Currently under construction is a 36' Bowlander, a 36' Cabin Cruiser, and a 43' Dive Power Cat.
This is a big day.. the first 960 BLACKFISH power catamaran rolling out of the fabrication shop and over to the paint bay.
BLACKFISH boats are a new signature brand of Noah Thompson designs manufactured in the Bay of Plenty, New Zealand. Each vessel is tailored to meet my clients' expectations in budget, performance, and fitout. The range of aluminium BLACKFISH boats start at 7.5m and work up to 18m in size.
New models are now under designs and the workshop is gearing up for another hull on the jig. More to follow.....