Search Results for: LNG

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Deltamarin and Aker Arctic develop Arctic Aframax design

The concept ship combines Deltamarin’s expertise in affordable, energy efficient cargo vessels with Aker Arctic’s arctic vessel expertise to deliver cost efficient and reliable tanker operation both in open water and in ice.

The Arctic Aframax tanker is intended for crude oil and oil product transports. It is strengthened to ice class PC5 level (equals approximately Russian Maritime Register of Shipping category ARC6) and is capable of continuously breaking thicker than one-meter level ice.

It can operate on the Northern Sea Route during the extended summer months, and with assistance even longer. During the winter months the vessel can operate in other sub-arctic sea areas such as the Baltic Sea or Sakhalin.
Deltamarin’s experience in designing cost efficient cargo vessels with track record of hundreds of contracted vessels is utilized in minimizing the newbuilding and operating costs.

According to Deltamarin’s Director of Ship Design, Markku Miinala, and Aker Arctic’s Project Manager, Riku Kiili, “the design integrates optimized ice breaking and open water performance as well as the latest energy efficiency features applied together with the Polar Code requirements. This unique combination results in an affordable building and improved transport economy by cost efficient operation. The design can be fine-tuned according to the customer’s wishes.”

The bow and hull shape of the vessel combine the optimum balance of open water performance with icebreaking capabilities. The specially designed hull strengthening improves safety in operations in the arctic waters. The hull is equipped with an Ice Load Monitoring System, which measures ice loads from the hull and provides online support to the officers ensuring safe operations. The system will also help the shipowner in the long term by analyzing the data and creating information for the optimal operations.  The emphasis has also been on winterization for cold climates in all aspects of the concept design.

The vessel is equipped with two CP-propellers and shaft lines directly coupled with slow speed diesel engines. The vessel can also be fitted to run on LNG with dual fuel engines. Further there is a possibility for two bow thrusters and shaft PTO/PTI (Power Take Off / Power Take In) systems.  A special focus has been on developing an improved command bridge, where the new Aker Arctic ARC Bridge Concept was used. The visibility from the bridge is excellent in all directions and good ergonomics including access and passages to command posts is created.

Arctic Aframax 118,000 DWT Crude Oil Carrier
Main Dimensions:

  • Loa                   266.0 m
  • Lbp                   258.1 m
  • Breadth             46.0 m
  • Depth                22.5 m
  • Draft, design      14.8 m

Hull and Performance:    

  • Ice class     PC5/RMRS Arc6 level
  • Ice breaking capability     1 meter continuous
  • Economical open water speed     13.5 knots
  • News

TOTE unifies maritime companies’ branding

SEPTEMBER 17, 2015 — Jones Act operator TOTE today announced that its  operating companies — Sea Star Line, which serves Puerto Rico and the Caribbean, and Totem Ocean Trailer Express, serving the

Five paths to greener coastal shipping

The program was launched by DNV GL and now also involves 25 partners from the Norwegian maritime industry and the Norwegian authorities.

The pilot projects include several different ship types, and infrastructure with an emphasis on alternative fuel concepts.

“When we launched the Green Coastal Shipping Programme, we said we wanted to make Norway a world showcase for green coastal shipping. With these five pioneering pilot projects we are well on our way,” says Program Director Narve Mjøs.

CargoFerry plug-in hybrid: Shipping company Nor Lines will lead the first pilot project, CargoFerry Plug-in Hybrid, which aims to develop a cost-effective and profitable short-sea containership powered by a plug-in hybrid LNG/battery propulsion system. It is a short-sea containership concept with a zero-emission solution during port sailing and operations. After developing the technical concept, the project partners will calculate the vessel’s environmental footprint and carry out a cost/benefit analysis.

Next-generation green shuttle tanker: Teekay Tankers will lead the second pilot project, which will investigate technical solutions for utilizing batteries and VOC (Volatile Organic Compounds) in a shuttle tanker. Battery technology has not been used on this vessel type yet and the project will explore how it could potentially help to optimize operations and reduce the need for installed power. The project partners will also look at the possible use of batteries as a “spinning reserve.”

After assessing the economic and regulatory feasibility of battery-powered shuttle tankers, the project will review new technological solutions for utilizing VOC (volatile organic compounds) produced on board by capturing and condensing the recoverable gases produced during offshore loading. Using the liquid VOC for onboard power generation could reduce total fuel consumption and the environmental impact of the vessel. As VOC are generated during offshore loading, using them as an energy source could offer an additional environmental benefit to reduction in total demand for fuel.

Hybrid ocean farming vessel: The third pilot project, by ABB and the Cargo Freighters’ Association, aims to define an optimized hybrid propulsion system for more energy efficient operations with greater redundancy.

Conversion of cargo carrier into battery-hybrid LNG carrier: This project aims to develop a cost-efficient LNG distribution concept with a hybrid LNG/battery propulsion solution and zero-emission port operations. Converting an existing vessel may provide a cost-effective option for small LNG carriers. The project owners Øytank Bunkerservice and the Norwegian Gas Association will lead the way in developing the technical concept, calculating the environmental footprint and carrying out a cost/benefit analysis.

Pioneering green port project: The fifth pilot project has the objective of developing a low-energy-consumption port with a minimal carbon footprint. Some of the technologies being employed to achieve this include electric heavy-duty vehicles and cranes. The green port will also be equipped with smart gates, offer cold ironing services and charging stations for plug-in hybrid ships.

Risavika Harbor in Stavanger will take the lead in the green port project, developing the technical concept, undertaking a cost/benefit analysis, calculating the environmental footprint and presenting a plan for further development of the concept.

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BV classes world’s first ethane fueled ship

The Dragon vessels were originally designed as dual-fuel LNG/diesel powered vessels, with two 1,000 cu m LNG tanks on deck powering two Wärtsilä 6L20 DF main engines with a total output of 2,112 kW and two shaft generators with a total  output of 3,600 kW power. As we reported in May (see earlier story), as the vessels will initially transport ethane from the U.S, to the U.K. Ineos refineries, the ability to also burn ethane was added to allow use of the cargo gas as fuel. 

“The ability to burn ethane as well as LNG to power these unique vessels is a major step forward in the use of clean fuels. It means the vessels can use cargo gas during transits to provide a clean and clear commercial and environmental advantage,” says Bureau Veritas Business Development Manager Martial Claudepierre. “We have worked with Evergas and the Danish Maritime Authority to verify and ensure that the use of ethane is at least as safe as required by the IGC and will not impair the engine compliance with MARPOL Annex VI.”  

According to Mr. Claudepierre, using ethane required extra engine room ventilation and additional gas detection, plus modifications to the main engines including a lower compression ratio, different turbocharger nozzles and de-rating of the engine to cope with the lower knocking resistance of ethane. “But,” he says, “the gains in not carrying an additional fuel and in environmental performance from being able to burn clean fuel throughout the voyage are significant.”

Wartsila wins regas module orders for two FSRUs

AUGUST 31, 2015 — South Korean shipbuilder Hyundai Heavy Industries (HHI) has placed contracts with Wärtsilä for seawater/propane based regasification modules. The systems are to be installed on FSRU (Floating Storage and

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New container feeder design from Deltamarin

AUGUST 14, 2015—Finnish naval architectural and marine engineering firm Deltamarin Ltd. has unveiled the A.Delta2300, the first in a series of container feeder vessel designs that offer “best-in-class” cargo capacity, flexibility and

Keppel Shipyard lands another FPSO contract

AUGUST 11, 2015—Keppel Offshore & Marine Ltd (Keppel O&M)’s wholly owned subsidiary Keppel Shipyard Ltd has secured a Floating Production Storage and Offloading (FPSO) conversion contract as well as three repair, upgrade