Page 44: of Maritime Reporter Magazine (February 2024)

Tech Files

Latest Products & Technologies

MarineShaft Yanmar Hydrogen

MarineShaft specializes in urgent re-

Fuel Cell AIP pair/replacement of damaged rudder and

Yanmar Power Technology Co., Ltd. propeller equipment along with many (Yanmar PT), a subsidiary of Yanmar on-site repair services. MarineShaft has a unique repair technique for putting Holdings, has achieved a milestone as the ? rst company in Japan to receive bent shafts and rudder stocks straight the Approval in Principle (AiP) for its with full-class approval. Its repair his- "Maritime Hydrogen Fuel Cell Sys- tory includes putting a propeller shaft tem" from ClassNK. The primary ob- straight that was 1-meter out-of-center jective of this system is to advance line with full class approval. Heavy the use of zero-emission ships in the

Emission Monitors equipment with a tiny straightening tol- maritime sector, effectively eliminating

Green Instruments A/S and Danish erance of max 0.05 mm. emissions such as CO2, NOX, SOX, Technological Institute have developed

Cold straightening is carried out using

PM, and others. The design emphasizes a real-time ? ue gas sensor technol- the company's purpose-built hydraulic ease of installation, with a con? guration ogy – The Extinction-Minus-Scattering presses that can straighten shafts up to that seamlessly integrates key auxiliary (EMS) measurement method – to accu- 1,500 mm in diameter. The shaft will components like gas valve units into the rately measure black carbon emissions not suffer stress afterward and can be system housing. Additionally, the sys- from ships, a tech which could be instru- reinstalled and continue its journey for tem's capability for parallel connection mental in meeting increasing regulatory years. When repair is not an option Ma- of multiple units and ? exibility in ad- demands of the shipping industry for rineShaft stock raw materials for almost black carbon emission standards. The any emergency, whether a replacement

EMS method enables real-time in-situ for tail shaft, intermediate shaft, rudder measurement capabilities, traceability, stock, or a new hydraulic coupling is and lowered ownership costs, tackling needed. MarineShaft offers a wide range signi? cant hurdles of existing emission of on-site repairs services. Recently a monitoring techniques.

team carried out a job taking place in

Canada for a cargo ship. The task was greeninstruments.com on-site laser measurement of the rudder line and on-site machining of the rud-

GE Vernova der horn casting. MarineShaft delivered justing the number of installed modules GE Vernova will equip the new UK a new propeller shaft, rudder stock, and in its housing allow it to cater to diverse Fleet Solid Support (FSS) ships with rudder pintle. ship output requirements. hybrid-electric propulsion technology marineshaft.com

Both the system and its installed Under the contract, GE Vernova will modules have successfully met the pre- design and manufacture SeaPulse Ac- scribed requirements for fuel cell power tive Front-End (AFE) power convert- systems based on ClassNK's "Guide- ers and Power Take-Off/Power Take-In lines for Fuel Cell Ships (2nd Edition)." (PTI/PTO) hybrid electric induction

This con? rmation follows test results motor-generators with resilient shock conducted in accordance with relevant mounts and ? exible coupling and hos- standards. Yanmar PT proposed this in- ing. Delivery of GE Vernova’s electric novative system to a range of vessels, propulsion equipment for the ? rst FSS including passenger ships, workboats, ship is scheduled for 2025, with the sec- and cargo ships, that operate in coastal ond and third vessels planned for 2026 areas with access to hydrogen infra- and 2027. structure. This development marks a signi? cant step towards sustainable and environmentally friendly maritime solu- tions.

3D Scanning yanmar.com

GE Vernova 44 Maritime Reporter & Engineering News • February 2024

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