RN Diesel Engine Co. Ltd.

RN Diesel Engine Co. Ltd.

New Engines


The RN Diesel Engine Co. Ltd. currently builds marine diesel engines of the Russell Newbery® DM series.


New DM2 engine built by the RN Diesel Engine Co. Ltd.
New DM2 engine built by the RN Diesel Engine Co. Ltd.


Please contact us to discuss your requirements



For pleasure craft or work boat... there is only one traditional diesel engine.

Look out for our sales stand at the annual Saul Canal Festival.

RN Diesel Engine Co. Ltd. sales stand
The sales stand and engine trailer with a new DM2 on show.

Traditional engines are environment friendly

Like most traditional slow revving engines, RNs occasionally emit some black smoke. Usually this happens when the engine is 'opened up' after a period running on tickover. Do not be deceived by this! Most of the smoke consists of carbon soot, which will fall back to earth as an inert powder. The special design of the combustion chamber on the D (and DM) series RN engines ensures a very high combustion efficiency. A typical fuel consumption figure for a DM2 in a canal boat is 1 litre per hour at normal canal cruising speed.

Also remember, a well maintained RN engine will last much longer than modern lightweight high-revving engines. We know of RN engines that are over 60 years old, still in use on boats and auxiliary equipment. Just think of how much energy and pollution is saved by manufacturing one engine every 60 years rather than six engines!