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Repair Tools News

25 Oct 2012

Virtual Towing Tank State-of-the-Art and Future Trends

Fig. 12: Determination of self-propulsion point by interpolation.

The use of computers to solve hydrodynamics problems in shipbuilding started in early days of scientific computing – as early as in aerodynamics and aerospace. Due to limited computing resources at that time, potential flow model was used in both aero- and hydrodynamics. However, while simulations based on Euler equations, Reynolds-averaged Navier-Stokes equations (RANSE) and most recently partially resolved Navier-Stokes equations (so-called “large-eddy” – LES – or “detached-eddy” – DES – simulations) have become established tools in aerodynamics…

25 Oct 2012

Virtual Towing Tank State-of-the-Art and Future Trends

 Fig. 5:Computational grid on the surface of a patrol boat.

The use of computers to solve hydrodynamics problems in shipbuilding started in early days of scientific computing – as early as in aerodynamics and aerospace. Due to limited computing resources at that time, potential flow model was used in both aero- and hydrodynamics. However, while simulations based on Euler equations, Reynolds-averaged Navier-Stokes equations (RANSE) and most recently partially resolved Navier-Stokes equations (so-called “large-eddy” – LES – or “detached-eddy” – DES – simulations) have become established tools in aerodynamics…

08 Nov 2011

Cummins Introduces QSB7 Marine Auxiliary Engine

Cummins Inc., a manufacturer of diesel engines for the commercial marine industry, is pleased to announce the latest addition to the Quantum Series product line and the company’s newest marine auxiliary engine, the QSB7-DM. The Quantum Series 6.7 liter engine was designed for industry-leading reliability, durability and the low cost of ownership marine operators have come to expect from Cummins. “Operators can feel confident knowing Cummins developed a marine engine based on an existing base engine that has proven successful in demanding industrial and power generation applications since production began in 2007,” says Cummins Chief Engineer – Commercial Marine, Mike Aufdermauer.

05 Apr 2010

Cummins QSK60 HPI Aux Engine Tier II Cert.

Cummins Inc. (NYSE: CMI) has received a statement of compliance from the American Bureau of Shipping (ABS) certifying the QSK60 HPI auxiliary engine to IMO Tier II emissions standards. The 60-liter, V-16 cylinder engine joins a full line-up of IMO Tier II compliant propulsion and auxiliary engines from 78 – 1925 kW (104 – 2547 HP) available from Cummins. The QSK60 features the proven Cummins High Pressure Injection (HPI) electronic fuel system and the same lubrication, cooling, air handling and exhaust systems as the IMO Tier I product. Further, the engine shares similar hardware with its predecessor including engine mounts, vessel connections and optional equipment, simplifying vessel installation and repowers.

03 Nov 2009

Cummins Expands IMO Tier II Product Line

In anticipation of customer requests for mechanical engines meeting stringent next-level global emissions regulations, Cummins Inc. (NYSE: CMI) has received a statement of compliance from the American Bureau of Shipping (ABS) certifying the KTA19-D(M1) to IMO Tier II emissions standards. The 19-liter, in-line six cylinder auxiliary engine features the proven Cummins PT fuel system making it one of the few high horsepower Tier II certified engines with a mechanically controlled fuel system. The KTA19-D(M1) fills a gap in the market for durable, reliable power without complex electronic controls. While major hardware remains unchanged from the current 19-liter mechanical product, timing adjustments allow for emissions reductions without significantly impacting fuel consumption.

10 Jan 2005

Propulsion Notes

Wärtsilä has decided to cooperate with MTS within the marine e-business market and has through the MTS infrastructure integrated its Spares Online service. Spares Online gives ship owners/operators full control of their parts ordering and delivery process directly in their existing purchasing system. Spares Online keeps track of all ship owners / operators installations and provides an updated view of the equipment installed in their plant. GE Transportation's marine gas turbine business has launched a program to obtain American Bureau of Shipping (ABS) certification, to the Steel Vessel and the new Naval Vessel Rules, for its LM6000 aeroderivative gas turbine. GE plans to certify the LM6000 at a power level greater than 36 MW based on U.S. Navy standard day conditions (100oF).

24 Apr 2007

Cummins Introduces K38-M Tier 2 Engine

Cummins Inc. has upgraded the popular KTA38-M0 to meet Tier 2 emissions levels. The new K38-M Tier 2 fills a gap in the market for durable, reliable power designed for use in areas covered under U.S. EPA Tier 2 and EU Stage IIIA emissions regulations. The K38-M Tier 2 is designed for demanding, high-hour, high-load markets such as offshore supply, inland waterways transportation, tugs and towing—applications where the current KTA38-M0 has already proven successful. The 38 liter, V-12 engine shares most hardware with its predecessor; by using a footprint, mount, ratings and optional equipment similar to the existing product, vessel installation has been simplified.