The Diesel Division of OY Wartsila A.B., Finland, comprises the Wartsila Vasa Factory in Finland and Nohab Diesel A.B. in Sweden. Its Nohab and Vasa engines are medium-speed, four-cycle diesels with an output range from 690 bhp to 8,250 bhp.
Wartsila has a long tradition in the design, development, and manufacturing of diesel engines. Due to the company's comprehensive product development, Wartsila engines already meet the requirements of the future in regard to burning low-grade fuel, good fuel consumption rates, and excellent service economy.
The Wartsila engine line includes the following:
The Vasa 32, with 12.60-inch bore and 13.78-inch stroke, is manufactured as in-line and V-type versions with outputs ranging from 1,790 to 8,250 bhp. The Vasa 22HF engine, with 8.66-inch bore and 9.45-inch stroke, is offered in 4-, 6-, and 8-cylinder in-line versions and in 12- and 16-cylinder V-type configurations, with outputs of 710 to 3,410 bhp. The Nohab F30 type engine, with 9.84-inch bore and 11.81-inch stroke, is manufactured in 12- and 16-cylinder V-type versions; output range is from 1,745 to 4,025 bhp. The Vasa 24 type engine with outputs from 690 to 1,460 bhp is also available.
The Vasa 32 and 22 type engines were designed and developed to operate on heavy fuel up to 380 cSt, whereas the Nohab F30 can accommodate fuel with a viscosity of 180 cSt.
Among the applications for Wartsila diesels are main engines in ships for both geared and diesel-electric propulsion, auxiliary engines for vessels, and generator systems for stationary power plants. The Vasa 32 provides an excellent combination as both main and auxiliary engine in the same ship, such as in car/passenger ferries. This provides simplified maintenance routines and the advantage that all the engines can be operated on bunker oil.
The Nohab F30 is widely used in offshore vessels, and more than one million bhp is presently in operation on such vessels and on oil rigs.
The Wartsila Diesel Division recently set up a completely new engine factory in Singapore, in partnership with Keppel Shipyard. To be known as Wartsila Power Singapore, its principal product will be the Vasa 22HF engine family. Wartsila Diesel also has a wide network of its own representatives, agents, and service stations all over the world. In the U.S., sales are handled by Wartsila Power, Inc., Marrero (New Orleans) and the West Coast branch, Wartsila Power Seattle, Inc. Wartsila Power, Inc. provides 24-hour parts and service from its workshop/office in Marrero.