Hydrodynamics theory establishes that wave making resistance of displacement hulls originate from their body shape, especially from shoulders, midbody, and rear quarter curvatures of their waterplane at the water-air interface. These curvatures create bow waves, midbody troughs, and stern waves, which set the “hull speed” limit when the distance between bow and stern wave equal the boat’s length (speed/length ratio 1.34). Above hull speed, resistance grows at a high exponential rate. Transonic Hull (TH) technology eliminates this problem by using a slender triangular waterplane with apex at the bow, and rectilinear sides, free of curvatures, extending from bow to a maximum beam at the stern. This shape also generates the sharpest possible entry angle at the bow.
Kadey-Krogen 52’ Hull Number One Scheduled for World Debut in Seattle Boats Afloat Show, Sept. 14-18. Hull number one of the new Krogen 52’ departed Asia Harbor Yacht Builders in Kaohsiung, Taiwan on August 22 and is set to make its international debut in the Seattle Boats Afloat Show on Lake Union from September 14-18. The premiere comes just 18 months after the announcement of the new model. Testimony to the Kadey-Krogen tagline “At Home on Any Sea
Lady Michelle is a semi-displacement hull design with 28 ft. (8.5m) beam and is capable of 19 knots and is powered by two Caterpillar 3512B main engines which develop 2,250 hp each. The shallow draft of 7.5 ft., enabling it to gain access to many ports uncommon for a yacht of this size. A 16,100 gallon (62,460 L) fuel tank will allow a large cruising range of approximately 4,200 nm at 10 knots (with 10% fuel reserved).
The Washington State Department of Transportation Ferries Division, operating as Washington State Ferries (WSF) issued this Request for Information (RFI) to determine the availability of a foreign flagged ferry for an international ferry route, as follows: WSF is the world’s largest ferry system based on the number of vehicles carried each year and the third largest in the world based on the 23,000,000 passengers served each year
Faster and far greener than any Megayacht in her class, a Carbon Neutral Emax Megayacht that maximizes ecology, energy, efficiency and economy to achieve a 50 to 100% reduction in fuel consumption and GHG emissions. The Ark Angel features the only compound engines other than the Curtiss Wright Cyclone to ever go into production, the Daimler Bluetec Turbo Compound DD 16 Employing the Daimler EPA “on road” turbo compound engines
Seattle - The pilot boat Connor Foss is currently under construction at the Foss Maritime Company's Shipyard in Rainier, Oregon, and will replace the Arrow 2 in June, 2012. The Arrow 2 will be taken out of service after fifty years transporting River and Bar pilots on the Columbia River at Astoria, Oregon. The Arrow 2 began service on the Columbia River in 1962. The steel hull launch boat with a single 700 horsepower engine has made thousands of pilot transfers in its long career.
Back at the dawn of maritime history, a coastal dweller first took a log and ventured out on the water. Over time his craft evolved from a rough log to one that had shape at the ends and was hollowed out. These changes to the basic log shape were the first example of modifying a hull form to increase carrying capacity, improve ride comfort, and to reduce resistance. Since then, shipbuilders, naval architects, and ship owners have experimented with hull shapes and the number of hulls to find
In October 2011, the new RAnger 2400 Class Fireboat, American United was delivered to the Massachusetts Port Authority by the builder A.F. Theriault & Son Ltd. The vessel, named in remembrance of September 11, 2001, was designed by Robert Allan Ltd. of Vancouver, B.C., who worked closely with the Owner to define the vessel's specific operational requirements. The American United will replace Massport's existing vessel Howard W. Fitzpatrick, built in 1971. Darren Hass, P.Eng
Fireboat to be Equipped with Six Fire Monitors and 26 Manifold Valves for High-Volume Water and/or Foam Firefighting. Jensen Maritime Consultants, Inc., a Crowley company, has been chosen to design a custom "super pumper" fireboat to enhance the City of San Francisco Fire Department's (SFFD) marine fire fighting and response capabilities on water. This high-volume water and foam pumping NFPA Type II fireboat will feature six fire monitors and 26 manifold
MetalCraft Marine announces the delivery of the new FireStorm 32 to the Stamford Fire Department. Model: FireStorm 32 Hull Number: 567 Customer: Stamford Fire Department, CT Delivered: August 2013 Specifications L.O.A.: 35’ 9” B.O.A.: 10’ 9” Displacement: 17,500 Engines: (2) Cummins 5.9@420HP Jets: (2) Hamilton 274 Fire Pump: Hale 1500 Discharges: 1 monitor
During the Italy-Russia Business Forum in Trieste, Italy, Fincantieri secured a contract to build a semi-submersible floating platform for the transportation of nuclear submarine reactor compartments. The company also signed an agreement to define plans for an advanced technology offshore energy
On Friday, December 6, 2013, the French Navy ship FS Siroco joined the EU Naval Force (EU NAVFOR) Somalia Operation Atalanta. FS Siroco will be the flagship of the European Union’s counter piracy operation off the coast of Somalia for the next four months
Naval design and engineering company BMT Defense Services Ltd. included a software package created by maritime software house NAPA during the design process for the new logistics and support vessel (LSV) ordered by the Norwegian Defense Logistics Organization (NDLO).
HydroComp NavCad is a software tool for the prediction and analysis of vessel speed and power performance. It also provides for the selection of suitable propulsion system components – engines, gears and propellers. A recent development effort has been undertaken to provide new submarine
MTU has been chosen by the Korean Coast Guard (KCG) to provide propulsion and onboard power for a new class of patrol vessels in its ever expanding and modernizing fleet. The new 5,000-ton displacement patrol vessel will be powered by four MTU 20V1163M94 engines in a Combined Diesel and Diesel
This October, the Danish offshore engineering specialist EIVA came one Factory Acceptance Test (FAT) closer to fulfilling the delivery of a complete jack-up positioning system solution for A2SEA. The system will be installed on a vessel designed to operate under demanding conditions and is part of
Jotun Hull Performance Solutions (HPS) has launched the HPS Newbuilding Solution at Kormarine in Busan, South Korea. The HPS Newbuilding solution is aimed at yards delivering vessels with eco-design and who want to maximize the energy efficiency at both speed trial and in operation.
Strainstall Marine, a part of James Fisher and Sons plc, has secured a five-figure order to supply stress monitoring systems for Hyundai Samho Heavy Industries (HSHI) to be fitted aboard a new 405m floating drydock. The floating drydock hull number S708 is owned by Qatar Petroleum
In connection with an order of a series of 10 new 13,800 TEU container vessels from the world’s largest shipbuilding company Hyundai Heavy Industries (HHI), the global container transportation company APL requested DNV Maritime Advisory to cooperate with the shipyard to ensure superior hull
PT-728, one of the few remaining examples of the torpedo-armed fast attack craft that helped America win WWII, is no ordinary boat. To help move the vessel carefully, HOSTAR Marine used a hydraulic yard trailer. Portraying various sister boats
The Honourable Gail Shea, Minister of Fisheries and Oceans, has announced the acceptance of the sixth of the Canadian Coast Guard’s new Hero Class vessels, the CCGS 'Corporal McLaren M.M.V.' “Our Government is proud to accept the CCGS Corporal McLaren M.M.V
The latest general purpose harbour tug built by Macduff Shipyards has been launched, powered by WaterMota supplied engines. Eileen McLoughlin, owned and operated by John McLoughlin and Son (Shipping) Ltd. of Larne and Belfast, is the sister ship to Sally McLoughlin which was built in 2009
Viking Welding & Response Marine, Inc. have recently completed a 36’ research vessel, which is being used in United States Coast Guard Academy coursework this fall. Christened the Michael J. Greeley Spirit of ’61, the vessel was largely funded by gifts from the Academy class of
Two new vessels for the Russian Navy will be laid down simultaneously at the Northern Shipyard in St.Petersburg: the warship is the fourth vessel in the Admiral Gorshkov-class of frigates, and the other is the second in a new class of intelligence vessels, reports Barents Observer.
CTruk has utilized the performance statistics and operational feedback gained during its composite SWATH workboat CWind Astute’s first year at sea to fine tune the design for the next build. The Brightlingsea yard has recently started work on a 20m SWATH OWSV for Dungeness-based Technical