Wärtsilä 46F

Best-in-class fuel economy & outstanding power-to-weight as well as power-to-space ratios

The technologically advanced Wärtsilä 46F can be run on either heavy fuel oil (HFO), marine diesel oil (MDO), or on light diesel when being operated within strict coastal or port emissions areas. This fuel switching can take place smoothly and without power interruption across all engine loads.

This flexibility enables the operator to select the fuel according to price, availability, and the need to meet local emissions regulations.

The Wärtsilä 46F engine is fully compliant with the IMO Tier II exhaust emissions regulations set out in Annex VI of the MARPOL 73/78 convention.

    Technical Data
    Wärtsilä 46F IMO Tier II or III
    Cylinder bore 460 mm Fuel specification:
    Piston stroke 580 mm Fuel oil 700 cSt/50oC
    Cylinder output 1200 kW/cyl 7200 sR1/1000 F
    Speed 600rpm ISO 8217, category ISO-F-RMK 700
    Mean effective pressure 24.9 bar L engine SFOC 171 g/kWhat ISO condition
    Piston speed 11.6m/s V engine SFOC 170 g/kWh at ISO condition
    Option:Lubricating oil module integrated on engine.

    Dimensions (mm) and weights (tonnes)
    Engine type A* A B C D F Weight
    6L46F 8430 8620 3500 2930 3750 1480 97
    7L46F 9260 9440 3800 2950 3750 1480 113
    8L46F 10080 10260 3800 2950 3750 1480 124
    9L46F 10900 11080 3800 2950 3750 1480 140
    12V46F 10080 10150 3770 4050 3800 1820 173
    14V46F 11650 11729 4243 4678 3800 1820 216
    16V46F 12700 12779 4243 4678 3800 1820 233


    Rated power
    Engine type kW
    6L46F 7 200
    7L46F 8 400
    8L46F 9 600
    9L46F 10 800
    12V46F 14 400
    14V46F 16 800
    16V46F 19 200

    Press releases

    Wärtsilä 46F engines for new Viking Line high-speed RoPax ferry

    by Wärtsilä Corporation | Dec 17, 2014

    Low operating costs and increased payload capacity will be gained by the choice of Wärtsilä main and auxiliary engines for a new high-speed RoPax ferry between Helsinki, Finland, and Tallinn, Estonia.

    Wärtsilä Corporation has been awarded a contract in March 2006 to deliver the power plant for the new ferry contracted by the Mariehamn, Finland, based shipping company Viking Line Abp at the Helsinki shipyard of Aker Yards. The ferry will be delivered in January 2008.

    For this ferry, Wärtsilä will deliver four eight-cylinder Wärtsilä 46F main engines, each of 10,000 kW output at 600 rpm, and three 8-cylinder in-line Wärtsilä Auxpac 20 generating sets, each of 1350 kWe output.

    The 2500-passenger ferry will have dimensions of 185 m length overall, 170 m length between perpendiculars, 27.70 m breadth and 6.55 m design draught. It will be built to Ice Class 1A Super for year-round navigation in the Baltic, and will have a service speed of 25 knots. The ferry is intended to provide fast comfortable trips with modern range of dining and shopping facilities for passengers, and to meet the increased need for transport capacity, especially for passenger vehicles.

    The Wärtsilä 46F engine features a high power concentration, enabling 40,000 kW to be delivered by four engines with a minimum number of cylinders while giving substantial benefits in minimum engine height and breadth. The low weight of these engines will enable the ferries to have an increased payload capacity compared with alternative engines. The engines will be equipped with catalysts to minimise NOx emissions in the exhaust gases.

    The main criterion for selection of the Wärtsilä 46F for the main engines, however, is that the engines’ fuel consumption can be optimized for the complex operating profile with frequent variations in engine power during the crossings between the ports of Helsinki and Tallinn. The fuel consumption of the engines will be optimised for both their constant -speed operation while entering and leaving ports, and their variable-speed operation during the passages across the Gulf of Finland.

    Media contact:
    Marit Holmlund-Sund
    Public Relations Manager
    Wärtsilä Corporation
    Direct tel: +358 10 709 1439
    Direct fax: +358 10 709 1425
    e-mail: marit.holmlund-sund@wartsila.com
    Internet: www.wartsila.com


    IMO Tier III and Beyond

    Some years ago, with the end of the Wärtsilä 46 product cycle in sight, Wärtsilä decided to upgrade the engine design.
    28 May 2012
    • Twentyfour7. article

    Related services

    Contact us – Wärtsilä 46F

    If you have an inquiry concerning an existing installation, spare parts, maintenance etc, please send us a service inquiry.

    Please fill in the form on the right if you have an inquiry related to MARINE ENGINES for newbuild applications. Fields indicated with an asterisk (*) are required.

    Find your local Wärtsilä office

    © 2019 Wärtsilä