Super-Slow Steaming: VTI Turbocharger Retrofit Pay-Off

By George Backwell at November 01, 2013 23:20
Filed Under: Marine Diesel Engines
What to do when the tanker markets are depressed? Maersk Tankers has taken a hard look at bunker fuel consumption, which on their Very Large Crude Carriers (VLCC) makes up about 85% of the voyage costs. They found that the key to improve earnings is super slow steaming, which they’ve taken to a whole new low with giant VLCC’s ambling over the oceans at speeds as slow as 8.5 knots.Super slow steaming requires engine load to be decreased down to 10%, which is equivalent to 50% speed, but the company recently decided to further economise on fuel consumption (and not by reducing the speed of its ships yet more) with the retrofit of a Variable Turbine Inlet system (VTI) onboard the 318,000 dwt crude oil carrier Maersk Ingrid. Manufacturers, Mitsubishi Heavy Industries Marine Machinery & Engine (MHI-MME) say that their VTI turbocharger system has been been fitted to more than ten new buildings, but never before retrofitted to an existing unit, a job that took just four days d... [More]

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