Search results
Results from the WOW.Com Content Network
A ducted propeller, also known as a Kort nozzle, is a marine propeller fitted with a non-rotating nozzle. It is used to improve the efficiency of the propeller and is especially used on heavily loaded propellers or propellers with limited diameter. It was developed first by Luigi Stipa (1931) and later by Ludwig Kort (1934). The Kort nozzle is ...
The rim-driven thruster, also known as rim-driven propulsor/propeller (or RDP) is a novel type of electric propulsion unit for ships. The concept was proposed by Kort around 1940, but only became commercially practical in the early 21st century due to advances in DC motor controller technology. [ 1 ]
Backspring Pty Ltd, Hobart: Diesel-1986 Cape Forestier (Warang (1974) 1936: Cockatoo Docks & Engineering Company, Sydney: Waratah Tug & Salvage Company, Port Jackson [2] Diesel: 1968–1987 Cape Bruny (Wonga (1949) 1949: Cockatoo Docks & Engineering Company, Sydney: Adelaide Steamship Company [3] Tamar River, Launceston: Diesel: 1971–1988 ...
Ludwig Kort (1888 - 1958 [1]) was a German fluid dynamicist known for developing the ducted propeller, or Kort nozzle. In an attempt to reduce canal erosion, Kort discovered that directing the wake of a propeller through a short, stationary nozzle also increased thrust. [2] He submitted a U.S. patent for this technique, which was awarded in ...
Their kort-nozzle allows for a greater bollard pull however it loses its pull at anything over 10 knots (19 km/h; 12 mph) and loses speed in turns. [3] The Ville class are 13.71 m (45 ft 0 in) long with a beam of 4.72 m (15 ft 6 in) and a draught of 2.74 m (9 ft 0 in).
She was delivered to the Holyhead Towing Company Ltd in April 2005. She measures 25.5 metres (84 ft) long overall and has a beam of 9 metres (30 ft) and a working draft of 2.4 metres (7.9 ft). Afon Braint is equipped with two Cummins KTA 38M2 engines and a Kort KT-150 bow thruster. She is powered by two Cummins powered 50kVA generator sets.
Schottel is a manufacturer of propulsion and steering systems for ships and offshore applications. The company founder Josef Becker invented the rudderpropeller, a z-drive, in 1950. Today the company develops and manufactures azimuth propulsion, maneuvering and steering systems. In 2014 the subsidiary Schottel Hydro was founded to bundle up the ...
Sir Charles William Feilden Hamilton OBE (26 July 1899 – 30 March 1978) was a New Zealand engineer who developed the modern jetboat, and founded the water jet manufacturing company, CWF Hamilton Ltd. Hamilton never claimed to have invented the jet boat. He once said "I do not claim to have invented marine jet propulsion.