Page 38: of Maritime Reporter Magazine (June 2025)

Tech Files

Latest Innovations & Technologies

World’s Most Powerful Methanol Engine

MAN ES will deliver the world's most powerful two-stroke methanol engine in June 2025. The engine, an MAN B&W 12G95ME-C10.5-LGIM (-Liquid

Gas Injection Methanol) type rated at 82,440 kW @ 80rpm, is currently being built by Chinese licensee, CSSC-MES Diesel Co., Ltd. (CMD). The engine is the ? rst of 12 bound for a series of 12 × 24,000 teu container vessels currently under construction: seven at Nantong COSCO KHI Ship Engineering Co., Ltd. (NACKS) for shipowner, Orient Overseas Container Line Ltd. (OOCL); and ? ve at Dalian COSCO KHI Ship Engineering Co., Ltd. for shipowner, COSCO

Shipping Lines Co., Ltd. Each engine will also feature MAN Energy Solutions’ proprietary EGRTC (Exhaust Gas Recirculation Turbocharger Cutout) emissions system, the largest two-string EGR system on a two-stroke engine to date.

clearance solution ? ts entirely below ? nearth's engine optimization technol- the main deck of most standard vessel ogy. Since an initial methane oxidation designs, ensuring that the prime real es- rate of 70% or higher has been veri? ed tate onboard can be fully utilized for the in the onshore engine test, the demon- ship’s main mission. stration testing will be conducted con- tinuously for one year.

MHI Group is making strategic efforts

Methane Oxidation

Catalyst System to strengthen its energy transition busi-

Mitsubishi Heavy Industries Ma- ness. MHI-MME and Mitsubishi Ship- rine Machinery & Equipment Co, Ltd. building are a part of this strategy, and

Steerprop: Largest (MHI-MME) have begun demonstration amid the increasing urgency for global

Retractable Thruster testing for a methane oxidation catalyst decarbonization, will continue to work

Steerprop expanded its range of re- tractable thrusters with its biggest unit system for LNG-fueled marine vessels, to reduce GHG emissions from marine to date. Designed for offshore vessels being jointly developed with Daihatsu vessels, and contribute to the improve- and workboats, the SP 45 R will be In? nearth Mfg. Co., Ltd. ment of the environmental performance

The catalyst system for the demonstra- of ships on a global scale.

introduced on several offshore, renew- tion test oxidizes slip methane (unburned ables and special purpose vessels.

Kongsberg's New

Working with vessel operators and methane) contained in the exhaust gas

Electric Towing Winch designers, Steerprop identi? ed that the of marine engines. Methane has a high greenhouse effect among GHGs, so the Kongsberg Maritime launched a new sealing and locking mechanisms are of- ability to suppress its emission is a sig- electric towing winch, powered by a ten a weak point for retractable designs. ni? cant advantage of this system. frequency converter-driven electric

The patent-pending seal design mini-

The methane oxidation catalyst sys- motor, delivering enhanced operational mizes downtime by actively managing tem was developed with MHI-MME's ef? ciency and reduced environmental water ingress, with low maintenance re- quirements that can be performed from catalyst design and manufacturing impact compared to traditional hydrau- technology at its core, combined with lic systems.

inside the vessel during normal opera- tion. A ? oating housing moves with the Mitsubishi Shipbuilding's shipboard in- Designed for harbor tug applications, stern tube to keep the seals in contact stallation technology, and Daihatsu In- the winch offers a pulling force of up to 35 tons and brake holding loads tailored even at high speeds and sea states, and to selected towing ropes. It features fre- a simple scraping solution reduces ma- quency converter technology for step- rine growth on the stern tube—a pri- less speed control during rope handling mary cause of seal damage. A hydraulic and is available in multiple drum con- locking and lifting mechanism ensures ? gurations, including single, double, maximum reliability and addresses an- and split drum options.

other common challenge for traditional

The robust design incorporates an retractable thruster designs—avail- electric motor, induction-hardened able deck space. The compact, zero- 38 Maritime Reporter & Engineering News • June 2025

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