Green Dolphin a concept design for a new Handysize bulk carrier A - - PowerPoint PPT Presentation

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Green Dolphin a concept design for a new Handysize bulk carrier A - - PowerPoint PPT Presentation

Apr 11, 2024 695 likes •807 views

Green Dolphin a concept design for a new Handysize bulk carrier A joint development project Project phases Phase 1: SDARI, DNV and Wrtsil have worked closely together Phase 2: SDARI will independently prepare basic design

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SLIDE 1

– a concept design for a new Handysize bulk carrier

Green Dolphin

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SLIDE 2

A joint development project

  • Project phases

– Phase 1: SDARI, DNV and Wärtsilä have worked closely together – Phase 2: SDARI will independently prepare basic design – DNV will later carry out class approval in principle.

  • Challenging market situation

– Low freight rates – High fuel prices – New environmental standards

  • The project concentrates on existing technologies currently available for

commercial use

5 June 2012 By SDARI, DNV and Wärtsilä

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SLIDE 3

5 June 2012 By SDARI, DNV and Wärtsilä

Developed in cooperation with ship owners and shipyards

  • Objective

– Meet ship owner and shipyard needs as well as environmental regulations

  • Input

– Market and logistics study – Input also received from ship owners and shipyards

  • Focus areas

– Fuel efficiency – Operational flexibility

Input from ship owners

– Robust and reliable – Environment-friendly and prepared for future regulations

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SLIDE 4

Concept overview

Main particulars

  • Double hull bulk carrier designed to IACS Common Structural Rules
  • Five flush cargo holds with high cubic and deadweight capacity
  • Wide hatches with foldable double-skin hatch covers
  • Four electric deck cranes with variable frequency drive
  • Designed to carry a wide range of cargoes

5 June 2012 By SDARI, DNV and Wärtsilä

Length over all 180 m Draught, scantling 10.5 m Length between perpendiculars 177 m Draught, design 9.5 m Breadth 32 m Deadweight, scantling 38,800 mt Depth 15 m Deadweight, design 33,400 mt Cubic capacity (grain) 50,500 m3 Service speed at design draught 14.0 kn

FUEL AND ENERGY EFFICIENT OPERATIONAL FLEXIBILITY ROBUST AND RELIABLE ENVIRONMENT-FRIENDLY AND PREPARED FOR FUTURE REGULATIONS

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SLIDE 5

Fuel efficiency

Hull optimisation and propulsion – a SDARI and DNV combined effort

  • Hull form optimisation by use of Computational Fluid Dynamics
  • Large propeller, low rpm
  • Wake equalising duct, rudder transition bulb and rudder fins
  • Main engine with economical performance over the whole operating range

Low fuel consumption achieved at a range of service conditions

  • Daily main engine fuel consumption at 14 kn at 9.5 m draught: 17.7 t
  • Daily fuel consumption at 10 kn slow-steaming: 6.4 t
  • Energy Efficiency Design Index (EEDI) 25% below the IMO reference line for bulk carriers

5 June 2012 By SDARI, DNV and Wärtsilä

Wake distribution Wave pattern Propeller, rudder and propulsion-efficiency devices

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SLIDE 6

Operational flexibility

Focus on cargo handling and maintenance friendliness

  • Suitable to carry a wide range of cargoes, including deck cargoes
  • High tank top load capacity for steel coil loading
  • Electric variable frequency drive deck cranes
  • Wide hatch openings
  • Double-skin flush cargo holds without hopper or top side tanks in cargo holds 2, 3 and 4
  • Cargo hold recess for compressed air, power and wash water supply
  • Tanks for clean and dirty cargo hold wash water
  • Separated dirty and clean ballast water tanks

5 June 2012 By SDARI, DNV and Wärtsilä

Midship section, steel coil loading

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SLIDE 7

Robust and reliable

Safety and structural integrity at the center of the design

  • Double hull construction
  • IACS Common Structural Rules for Bulk Carriers
  • Continuous hatch coamings
  • Heavy ballast condition achieved without using cargo hold
  • All fuel oil tanks located in the engine room
  • A60 fire insulation of engine room bulkhead
  • Cargo hold CO2 fire fighting system
  • Safe access for crew and stevedores
  • Piracy protection with citadel

5 June 2012 By SDARI, DNV and Wärtsilä

Clearly marked ladders and handrails

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SLIDE 8

Environment-friendly

5 June 2012 By SDARI, DNV and Wärtsilä

Specific attention paid to performance and emission reduction

  • Wärtsilä 5 cylinders two-stroke low-speed RT-flex50, IMO Tier II compliant
  • Low fuel consumption level through the complete load range
  • Compliant with existing NOX or SOX regulations
  • Dual-fuel version available, utilizing low-pressure gas injection
  • Ballast water treatment system
  • Integrated bilge water treatment system
  • Water-lubricated stern tube bearings
  • Class notations CLEAN and RECYCLABLE

Existing and new environmental regulations

Illustration

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SLIDE 9

Prepared for future regulations

5 June 2012 By SDARI, DNV and Wärtsilä

Illustration

Different versions to comply with upcoming local and global regulations

  • Base case design runs on heavy fuel oil

Options exist to owners’ preference

  • Scrubber system
  • Selective Catalyst Reduction (SCR)
  • Dual-fuel operation with LNG

SCR and scrubber installation LNG tank installation

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SLIDE 10
  • Fuel efficiency
  • Operational flexibility
  • Robust and reliable
  • Environment-friendly and

prepared for future regulations