The performance of three different shaped hulls was evaluated by experiments and computations to identify a hull form that provides low calm water resistance at cruise speed while remaining dynamically stable at high speed.
When new technical requirements are introduced, it often indicates that new design innovations are on the horizon. From January 1 2021, IMO Tier III emission requirements will come into effect for recreational vessels with a load line length of over 24 meters.
Yacht owners often view time as one of their most valuable assets. So when they plan on spending time onboard their vessel and the trip is cancelled due to equipment failure, it is a huge disappointment.
Stationed in the United States, DLBA Naval Architects & Marine Engineers (formerly Donald L. Blount & Associates, Inc.) is proud to have a long history of cooperation with yacht builders and applying our specialized skills to guide complex new construction projects.
Donald L. Blount and Associates, Inc. has design cognizance over four of the world’s fastest fifteen megayachts. Included in the list of the fastest yachts are the gas turbine Motor Yacht DESTRIERO and the gas turbine Motor Yacht FORTUNA. GTMY DESTRIERO, length overall of 67.7m (222 feet), holds the record for the fastest Eastbound trans-Atlantic crossing at 53.09 knots.
The turning characteristics and capabilities of displacement vessels are well understood and documented. Standards for the maneuvering capability of displacement vessels exist.
Due to reductions in materials costs and advances in fabrication technology, the marine industry has recently seen a proliferation of custom and semi-production aluminum boats. There always have been a number of large yacht builders who work exclusively in aluminum alloys, and they have been fairly price competitive alongside the well-known FRP custom yacht builders.
In this paper, the feasibility of experimentally testing 3D printed propellers was investigated at Reynolds numbers where scale effects were significant. Hama strips were printed on the leading edge of a B-series model propeller’s blades and open water tests were performed with both unstimulatedand stimulated propellers for ℝe=105to5×105.
This paper considers the initial feasibility of an unmanned surface vessel (USV) using a Series Hybrid Diesel Electric propulsion system.
Cavitation adds a dimension to propeller operation that necessitates rational design practice to approach a good balance of craft requirements. This paper discusses propeller characteristic format to reduce the computation time to make performance predictions and propeller selection for partially and fully cavitating conditions.
