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Man Diesel & Turbo engine passes Type Approval Test

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Dry Bulk,

MAN Diesel & Turbo’s dual-fuel MAN L23/30DF engine has successfully passed its Type Approval Test (TAT) on 2 November 2017 at CSSC Marine Power (CMP) in Zhenjiang in front of the industry’s main classification societies.

Man Diesel & Turbo engine passes Type Approval Test

The five-cylinder test engine in China had an output of 125 kW per cylinder at a nominal speed of 720/750 rpm.

Finn Fjeldhøj, Head of Small-Bore, Four-Stroke Engineering, MAN Diesel & Turbo, expressed the company’s high expectations for the engine and said: “The L23/30DF covers a power range of 625 – 1,200kW, which makes it particularly attractive for such ocean-going vessels as bulkers of most sizes, general cargo ships, chemical tankers, and smaller LNG-carriers, as well as ships operating in ports and near the coast. Encouragingly, shipowners around the world have already shown significant interest in the engine and we are very optimistic about its future prospects.”


The TAT included tests of the engine’s:

SaCoSone alarm and safety system

Dual-fuel safety concept, including a test of the pilot-fuel system.

Load-step performance.

A components inspection.


The MAN L23/30DF engine was also granted a certificate for compliance with IMO Tier III regulations in gas mode without any after-treatment equipment. In addition, the engine can provide up to 110% power output in both gas and fuel modes.

ESL Shipping, the leading carrier of dry bulk cargoes in the Baltic region, has already ordered the first six L23/30DF GenSets for two 25 000 DWT cargo carrier newbuildings, currently under construction at CSC Jinling ship yard in China.

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Dry bulk shipping market