Just six years after its introduction, MAN Diesel & Turbo has confirmed an order for the 1500th G-type engine. Greek ship operator, Almi Tankers, will
take delivery of the ultra-long-stroke 7G80ME-C9 type as prime movers for the two 317,000-dwt VLCC to be built by HHI (Hyundai Heavy Industries Group) in
Korea. Coincidentally, Almi Tankers also placed the order for the very first Gtype engine. The crude carriers are due for delivery in, respectively, February
and April, 2018. In both instances, the engine is Tier III-compatible.
Ole Grøne, Senior Vice President – Two-Stroke Promotion & Sales, MAN Diesel & Turbo, said: “The success of our ultra-long-stroke portfolio is a
fantastic story for us. That we have already clinched orders for 1500 G-type engines since the G-type’s launch just a few short years ago is remarkable;
the G-type is easily the fastest selling engine we have ever had.”
The new order resembles the order that Almi placed in 2012 when it ordered two 7G80MEC9 units for another two VLCCs. HHI reported that the engine, at
that time the world’s first MAN B&W 7G80MEC9 unit, passed its official shop test in January 2013.
The G-series of engines, together with the established S-series of engines, constitutes MAN Diesel & Turbo’s modern, two-stroke engine programme and
cover similar power ranges in different rpm brackets. Both series are
constantly maintained and upgraded to cater for the needs of both hull-lineoptimised
vessels and propeller-rpm-optimised vessels.
Rationale behind G-type introduction
MAN Diesel & Turbo’s G-type programme entered the market in October
2010. The ‘G’ prefix before an engine means it has a design that follows the
principles of the large-bore, Mark 9 engine series that MAN Diesel & Turbo
introduced in 2006 with an ultra-long stroke that reduces engine speed,
thereby paving the way for ship designs with unprecedented high-efficiency.
Following efficiency optimisation trends in the market, MAN Diesel & Turbo
thoroughly evaluated the possibility of using even larger propellers and
thereby engines with even lower speeds for the propulsion of tankers and bulk
Such vessels may be more compatible with propellers with larger diameters
than designs so far used, and therefore able to facilitate higher efficiencies
following adaptation of the aft-hull design to accommodate a larger propeller.
It is estimated that such updated aft-ship designs with the G-series of engines
offer potential fuel-consumption savings of some 4-7%, with a similar
reduction in CO2 emissions.
Simultaneously, the engine itself can achieve a high thermal efficiency using
the latest engine process parameters and design features.
Illustration of the G80ME-C9 engine from MAN Diesel & Turbo’s library
About MAN Diesel & Turbo
MAN Diesel & Turbo SE, based in Augsburg, Germany, is the world’s leading provider of large-bore diesel and gas engines
and turbomachinery. The company employs around 15,000 staff at more than 100 international sites, primarily in Germany,
Denmark, France, Switzerland, the Czech Republic, India and China. The company’s product portfolio includes two-stroke
and four-stroke engines for marine and stationary applications, turbochargers and propellers as well as gas and steam
turbines, compressors and chemical reactors. The range of services and supplies is rounded off by complete solutions like
ship propulsion systems, engine-based power plants and turbomachinery trains for the oil & gas as well as the process
industries. Customers receive worldwide after-sales services marketed under the MAN PrimeServ brand