Shafts & Propellers
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NewsSteerprop increases Arctic exposure
Steerprop, the leading designer and manufacturer of propulsion systems for tough Arctic conditions, has appointed Tom Ekegren as Arctic Segment Director.
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KM propulsion package for Philippine Navy PSVs
Kongsberg Maritime will supply a propulsion package for a series of six 94-metre offshore patrol vessels to be built by Hyundai Heavy Industries for the Philippine navy.
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Onboard Comfort Pivotal To Propeller Series
A new propeller design series tailored to the needs of cruise vessels is being developed under a Dutch-led joint industry project (JIP).
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Small Propeller Defects Can Result In Increased URN
The slightest deviation in the machining, polishing, and finishing of ships’ propeller blades could result in underwater radiated noise and cavitation, even if defects are within the maximum tolerance allowed by classification societies and the ISO 484-1 standard.
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DMC to supply rudders for German frigates
DMC is to supply eight rudders for four F126 frigates currently under construction for the German navy
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Solvang orders propulsion upgrade to meet EEXI standards
MAN Energy Solutions’ PrimeServ after-service team is to provide a propulsion upgrade for a 2007/2008 gas carrier owned by Solvang ASA. The propulsion upgrade also includes the introduction of main-engine power limitation and optimisation of the existing CP propeller and aft-ship system to enable it to meet impending EEXI regulations.
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Propeller blade upgrade cuts fuel consumption
Berg Propulsion has secured a substantial reduction in fuel consumption and vibration for a long-serving Baltic ferry, after a propeller blade replacement.
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ABS grants AiP for hybrid LNG carrier
ABS has awarded approval in principle (AiP) to Daewoo Shipbuilding & Marine Engineering (DSME) for its hybrid power system, a configuration previously limited to smaller vessels, to aid large LNG carriers.
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Wärtsilä Refines its Hybrid FPP Concept For LNGCs
Treating the propeller design and electric motor as integrated components of the shaftline allows higher propulsive efficiency.
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New notation for enhanced tailshaft condition monitoring and performance
Class society DNV has introduced a new qualified propeller shaft and bearing condition monitoring notation.
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Hapag-Lloyd to upgrade 150 ships
Hapag-Lloyd has launched a comprehensive fleet upgrade program to technically modernise its existing fleet.
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Slow-running PM motors to become ‘widespread’
Low-speed permanent-magnet (PM) motors driving large propellers will become widespread “once electrification happens in segments that have traditionally been diesel engine driven”, believes Emil Cerdier, Product Director at Berg Propulsion.
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Report highlights vibration-induced failures
ABS has published a detailed analysis of ship vibration issues which presents the latest developments in vibration analysis, vibration criteria and mitigation measures.
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New SDARI design uses torsional damper to eliminate BSR
Dr. Chris Leontopoulos, Director of Global Ship Systems Center, ABS Athens discussed the benefits of a new sterntube design for a container feeder vessel design at Posidonia 2022.
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ABS Grants AIP for new stern tube design
ABS has granted Approval in Principle (AIP) to the Shanghai Merchant Ship Design and Research Institute (SDARI) for a vessel design with a novel aft layout which eliminates pollution and promotes efficient vessel operations.
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KM to propel new electric ferry
KM to supply propulsion package for world’s largest all-electric double-ended ferry
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New shaft seal has SRTP benefit
Thordon Bearings has released a new propeller shaft seal with a unique Safe Return to Port (SRTP) design.
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Reports of propeller shaft bearing damage increasing
DNV reports an increase in reported propeller shaft bearing damage on older vessels, typically above 10 years of age, operating with environmentally acceptable lubricants (EALs).
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Researchers show importance of dynamic engine behaviour when matching engine with propeller
A research paper published in the International Journal of Naval Architecture and Ocean Engineering in December 2021 has demonstrated the importance of considering dynamic engine behaviour when designing propulsion systems for 2-stroke engines.
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ABB expects PM shaft generators on Himalaya Shipping series to achieve 4% fuel savings
ABB is to provide innovative permanent magnet (PM) shaft generators for 12 of Newcastlemax bulkers ordered by Himalaya Shipping. The Bermuda-based shipowner will take delivery of the series of 210,000 dwt ships from New Times Shipbuilding in Jiangsu, China, starting from 2023.
