Merchant Vessels

Our merchant design portfolio consist of innovative designs with a cost efficiency focus that are environmentally compliant with known and future rules and regulations, and revolves around our understanding of the ship owner’s business model. In addition we can ensure reduced risk, due to our vast knowledge about integration between the products and design.

Our focus on environment and efficiency, and our extensive experience with LNG as fuel is reflected in our portfolio, as all our merchant ship designs come in three versions; ‘conventional’ using HFO as fuel, ‘environmental’ using HFO with exhaust cleaning scrubber systems, and ‘clean’ with dual-fuel capability and running mainly on liquefied natural gas (LNG).

Key performance parameters that we incorporate in all our designs:

  • Fuel flexibility and efficiency
  • Cargo capacity
  • Redundancy in systems
  • Lowest possible emissions

    Download Ship Designs Datasheets

    Container Feeders

    Available in three versions: HFO, HFO with exhaust cleaning systems, dual-fuel engines

    Download datasheets

    GAS carriers/ bunkering vessels

    Fuel economy, performance guarantees, optional versions to meet specific needs

    Download datasheets


    Proven Wärtsilä SK 5054 ship design has been used for 60+ vessels already in operation

    Download datasheets


    • El Coquí and Taíno
      El Coquí and Taíno will be the very first LNG powered, American flagged, container RoRo ships. They will operate between Jacksonville, Florida and San Juan, Puerto Rico on a weekly rotational basis.

      El Coquí and Taíno

    • Bit Viking
      In 2011, the first ever marine conversion of Wärtsilä 46 engines to Wärtsilä 50DF dual-fuel engines was carried out on the product tanker Bit Viking, owned by Tarbit Shipping of Sweden. It also represented the first Wärtsilä 50DF dual-fuel marine installation with mechanical propulsion.

      Bit Viking

    • Bitflower
      Delivered in 2003, the tanker Bitflower features a complete Wärtsilä machinery installation incorporating a Wärtsilä 6L38 main engine. Bitflower belongs to Tarbit Shipping AB, a Swedish shipping company that has been shipping asphalt, petroleum products and chemicals since 1962.


    • Sten Idun
      Sten Idun is a 16400 dwt Chemical Tanker with a Wärtsilä equipment package of engines, gear and propulsors. Sten Idun vas commissioned 2003 and features a PTI booster and takes me home mode.

      Sten Idun

    Related press releases


    An innovative LNG fueled container RO-RO...

    Designed by Wärtsilä Ship Design (WSD) for Crowley Maritime (CM) and currently contracted with, and soon...
    21 May 2014
    • White paper

    Tanker trio streamlines the waterline

    Heading below the waterline allowed Wärtsilä engineers to redesign its Aframax hull, increasing flow to the propeller and improving efficiency. Several green-tech touches completed the makeover, which created a splash at the tanker launch at Posidonia.
    1 December 2014
    • Twentyfour7. article

    Contact us

    Lilli Chi
    Markku Miinala
    Markku Miinala

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