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vessel designed for use on the Rhine. Additionally, approval has also been granted under the ADN, the Euro- pean Agreement concerning the In- ternational Carriage of Dangerous Goods by Inland Waterways. Accord- ing to van Voorn, the regulatory ap- proval process was no easy bar to clear. Also involved with the design and ap- proval process were the Dutch Gov- ernment, Lloyds Register and various other local authorities. The MTS Greenstream? LR ?classed as follows: LR+A1 i.W.W. Tanker Type C?, p.v. +50kPa, S.G. 1.00. SCANIA: A PURE GAS ENGINEScania, with its Dutch partner, Sand? rden Technics B.V., began to develop a pure gas engine at about the same time as Peters began to move its inland tanker concept forward. A series of special Scania gas generator sets for marine use, each with a power output at 285 kWe, runs on 100% natural gas. Classed by Lloyds Regis- ter of Shipping, these are among the very ? rst natural gas engines which have been marinized and classi? ed in this power range. They also have been designed according to the ESD regu- lation (ESD= emergency shut-down). The engines are based on Scanias diesel engine design. Modi? ed in close cooperation with Sand? rden the SGI-12 and SGI-16 gas engines feature single cylinder heads with 4-valve, heavy-duty industrial glow plugs. With an approximate durabil- ity of 2,000 operational hours, ensur-ing reliable service and lower mainte- nance costs, the mechanical output, available at the ? ywheel, is between 205 and 300 kW (COP) at 1,500 and 1,800 rpm. Producing lower gas con- sumption and, of course, less noise, these so-called lean-burn engines operate in an air-rich environment. MN 75www.marinelink.com MN Sept2013 Layout 66-81.indd 758/30/2013 1:11:06 PM