The new Wärtsilä 46DF engine has been specifically developed for the high-output market and is fuel flexible as well as power flexible with 1045 kW or 1145 kW cylinder power options.Compactness and reduced weight are the key attractions of the medium-speed engine, giving ship designers the option of increasing a new vessel’s revenue-earning capacity to get the most efficient propeller speed through mechanical (reduction gearing), or through diesel-electric transmissions. With the cruise ship, ferry, LNG carrier and offshore vessel markets for this type of engine in mind, the 46F engine design is based on the well proven Wärtsilä 46F engine, popular since the early 2000s, but with the advantage of being able to use natural gas, heavy fuel oil (HFO), or marine diesel oil (MDO) bunker fuel.
Engine detailsThe Wärtsilä 46DF extends Wärtsilä’s dual-fuel engine family by covering the power range from 6.2 MW to 18.3 MW at 6... [More]
Rolls-Royce said today in a press announcement that it will supply water jets for three wind farm support vessels, (one 24-meter and two 26-meter aluminum catamarans) to be built by South Boats IOW for the offshore wind transfer vessel operator Seacat Services.Rolls-Royce labeled the contract as “one of the biggest orders made for wind farm workboats,” and all three newbuilds will feature two Rolls-Royce 56A3 stainless steel water jets as well as Rolls-Royce’s new compact control system tailored to suit owners’ requirements and reduce build/installation times.The new wind farm workboats will include MTU 12V 2000 engines which will power the catamarans to speeds of up to 30 knots. Once in operation, the catamarans will be used for people and cargo transfers to the growing number of offshore wind farms around the coast of Europe.When factoring the water jets’ properties into the vessels’ overall design, the propulsion system contributes a safety elemen... [More]
Propulsion pod pioneers ABB have won an order worth around US$25-million to supply its marine propulsion system, Azipod, and complete electric power plants for two new rescue and salvage icebreakers that are under construction at Nordic Yards GmbH in Germany.
Azipod Propelled Russian Icebreaker: Image courtesy of ABB
The original idea for the Azipod (Azimuthing Podded Drive) system was conceived a couple of decades ago in response to the Finnish Maritime Administration’s quest for ways to improve its icebreaker operations. Icebreakers must be capable of manoeuvring in such a way that they can break out of an ice channel in any direction in order to assist merchant ships using that channel. Investigations showed that a propulsion motor which could direct the thrust in any direction would be the ideal solution to this problem. The Azipod drive system that was subsequently developed provided the answer with its podded electric propulsion unit, freely steerable through 360 degr... [More]
Polar King, constructed in Vigo on Spain’s Atlantic coast by century-old shipyard Constr. Nav. Paulino Freire S.A. recently entered service for Norwegian owners GC Rieber Shipping of Bergen. This week this hi-tech ship was already setting about the work she was built for; offshore rig and multi-purpose platform support services, as well as research (with ROV operating capability) in the North Sea hydrocarbon fields.
PropulsionThe DP equipped Polar King is fitted with a diesel-electric propulsion system powered by 6 x MAN 9L21/331 main generator diesel engines that each produce 1,980 kW at 900 rpm, while for manoeuvring purposes there are a pair of TT 2400 DP CP tunnel thrusters by Rolls-Royce Marine AS – Propulsion Ulsteinvik.
Engine Room Polar King: Photo courtesy of MAN Diesel & Turbo
DNV ‘Clean Design’ Classed by DNV with the notation ‘Clean Design’ the Polar King features measures that not only limit harmful air emissions and sea ... [More]
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