Sign up
Log in Sign up
Wed 8 Sep 2010, 09:54 GMT

Fuel-saving propeller a 'success'

UK firm Stone Marine Propulsion reports continued success and fuel cost benefits for its New Profile Type (NPT) propeller.

The NPT propeller, originating from Japan, incorporates cavitation friendly section profiles to reduce the blade surface area and increase propeller efficiency. Additional benefits include reduced propeller weight and inertia, which can lead to savings further up the propulsion train.

Recent notable contracts for the Stone Marine NPT propeller include DS Norden’s newbuildings at the Chinese yards Guangzhou Longxue and Jiangmen Nanyang. Overall fuel consumption in these vessels is expected to be reduced by approximately 11 percent as a result of the owner’s revision of the main engine specification and the adoption of NPT technology.

Stone Marine Propulsion is also working with DS Norden on the upgrading of existing units within their fleet.

A further more long standing reference is Guangzhou Shipbuilding International’s continuing supply of a series of 39k tankers to A.P. Moller, again fitted with NPT propellers.

The NPT propeller has also been endorsed by Danish Naval Architects Grontmij Carl Bro, who now specify it as standard for their innovative Seahorse class of 35k bulk carriers.

NYK Line and BHP Group sign MoU. NYK Line and BHP renew partnership for dry bulk decarbonisation  

Japanese shipping firm and Australian resources company extend collaboration on alternative fuels and vessel safety.
Kota Orkid vessel during its maiden call at Singapore. PIL's LNG-fuelled Kota Orkid makes maiden call at Singapore  

Pacific International Lines deploys 8,200 TEU vessel on South West Africa route.
WinGD and Panasia Frame Agreement Signing. WinGD and Panasia partner on emissions upgrades for dual-fuel LNG engines  

Swiss engine designer signs frame agreement with Korean firm to retrofit X-DF engines.
Baleària’s Cap de Barbaria vessel. Baleària to trial methanol-to-hydrogen system on electric ferry  

Spanish operator to test e-methanol reforming technology on Ibiza-Formentera route.
HMM Clover Naming Ceremony. HMM names second methanol-powered containership in 9,000 TEU series  

South Korean carrier adds HMM Clover to fleet of alternative fuel vessels.
Markus Virtasalo, ABB. Covering the distance to shipping’s nuclear opportunities | ABB  

The number of stakeholders engaging with nuclear ship propulsion in 2025 indicates that the maritime industry is eager to expand its options on net zero emissions.
Christian Vandvig Finnerup, Dan-Bunkering. Dan-Bunkering appoints Christian Vandvig Finnerup as US managing director  

Finnerup transitions from Singapore role to lead American operations.
Hai Gang Wei Lai vessel. SIPG orders Wärtsilä systems for new LNG bunker vessel  

Shanghai International Port Group orders integrated cargo handling and fuel systems from Wärtsilä.
Chris Seide, Integr8 Fuels and William Kanavan, Pentarch Offshore Solutions. Integr8 Fuels signs MOU with Pentarch for bunker services at Port of Edrom  

Integr8 Fuels and Pentarch Offshore Solutions have signed an agreement to develop bunker fuel services.
Eagle Vellore vessel. MISC orders two LNG dual-fuel Suezmax tankers as part of fleet renewal  

Malaysian shipowner expands dual-fuel fleet with newbuilds backed by long-term charters.




 Recommended