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02 GREEN DOLPHIN
The Green Dolphin Handysize bulk carrier concept design is the result of the first development phase of a joint project between Shanghai Merchant Ship Design & Research Institute (SDARI), Det Norske Veritas (DNV) and Wärtsilä. The objective was to design a vessel that meets both the expecta-tions of ship owners and ship yards as well as relevant environmental regula-
tions. Efforts have focused on fuel efficiency, environmental impact, main-tenance friendliness and operational flexibility. The project concentrates on existing technologies that are currently available for commercial use.
The project started with a market and logistics study of the Handysize bulk carrier segment. A large number of ship
A response to a complex and demanding market situation with low freight rates, high fuel costs and new environmental standards
GREEN DOLPHIN – a concept design
FUEL AND ENERGY EFFICIENT
ENVIRONMENT-FRIENDLYAND PREPARED FOR FUTURE REGULATIONS
SAFE, ROBUST AND RELIABLE
02 GREEN DOLPHIN GREEN DOLPHIN 03
owner and shipyard inputs have been utilized in order to map current and future needs and expectations.
Green Dolphin is a five-cargo hold CSR double hull bulk carrier with high cubic and deadweight capacity. Its large transport capacity in combination with its low fuel consumption and opera-tional strengths provides a significant advantage in today’s flexible market.
The hull is designed to achieve optimal fuel efficiency without compromising
on strength and operational flexibility. Specific attention has been given to engine configuration, performance and emission reduction technologies. The concept design is fitted with an efficient Wärtsilä two-stroke low-speed main engine, 5RT-flex50. Green Dolphin is designed for compliance with current and future expected local and global emission regulations, such as those relevant for IMO Tier III, Emission Control Areas (ECAs) and EU ports, through different alternatives; switch to low sulphur fuels, installation of
exhaust gas cleaning systems or dual-fuel operation with LNG.
The concept design is equipped with wide foldable double-skin steel hatch covers and four energy-efficieny fully electric deck cranes with variable fre-quency drive.
OPERATIONAL FLEXIBILITY AND MAINTENANCE FRIENDLINESS
0 1 2 3 4 5
Prepared for LNG operation
Low fuel consumption
Low newbuilding price
Low maintenance costs
Second-hand value of ship
Trading area flexibility
Crew comfort
Robust construction
Use of proven technology
Environment friendly
Dangerous bulk cargoes
Ice-class ICE-E, ICE-C, ICE-1C
Double skin cargo holds
Wash water holding tanks
Example of input from ship owners (1-Not important, 5-Very important)
04 GREEN DOLPHIN
■■ Hull lines optimised for a representative operating profile (draught and speed range, focusing on 10-14kn), including no bulb for improved overall performance
■■ Improved propulsion efficiency; wake equalising duct in front of a large diameter slow-rotating propeller, rudder with rudder transition bulb and rudder fins to reduce the hub vortex and recovery of rotational losses
■■ Low Energy Efficiency Design Index (EEDI)
■■ Main engine with economical fuel consumption over the whole operating range
■■ Faired funnel and superstructure corners for reduced wind resistance
■■ Prepared for shaft torque and fuel consumption monitoring systems to facilitate performance monitoring and support the implementation of SEEMP and EEOI
Optimal fuel efficiency without compromising on strength and operational flexibility
Fuel and energy efficient
Wave pattern from hull design optimisation process using CFD tools Wake distribution obtained by CFD and used during aftbody design
04 GREEN DOLPHIN GREEN DOLPHIN 05
Forebody design variations
0%
At sea laden normal
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Operational profile(Time in different states)
At sea ballast w/ballast pumps
Sailing
In port
At sea ballast
At sea manoeuvring At port loading/discharge At port anchor/waiting/idle
Wake distribution obtained by CFD and used during aftbody design
06 GREEN DOLPHIN
■■ Main engine with low emission levels, IMO Tier II compliant■■ Fuel tanks for different grades of fuel (HFO, MDO and low sulphur fuels/ distillates)
■■ Ballast water treatment system ■■ Sewage water treatment system■■ Integrated bilge water treatment system (IBTS)■■ Waste management system ■■ Water lubricated stern tube bearing■■ Energy efficient fully electric deck cranes with variable frequency drive, electric windlass and mooring winches
■■ Prepared for installation of SCR and scrubber systems for IMO Tier III and ECA compliance
■■ Prepared for dual-fuel operation with LNG for IMO Tier III and ECA compliance
■■ Class notations CLEAN and Recyclable
Concept design available in different versions to comply with current and future expected local and global emission regulations
Environment-friendly and prepared for future regulations
1.0% ECAsulphur limit
3.5% global sulphur limit
DMA or DMB <0.1%S in California
2010
HFO prohibited in Antarctica
2011
Entry into force of EEDI and SEEMP
2013
EU MBM fully implemented (?)
2017
BW treatment on all ships
2020
Entry into force of Recycling Convention (?)
2020
- BW Convention entry intro force (?) BW treatment (D2)
on some ships
2012
0.1% ECAsulphur limit
2015NOx tier III in ECAs for NBs
2016IMO LS fuel
availability review
20180.5% global sulphur(delay until 2025?)
2020
2012 2012
20122011NOx tier II for NBs North American ECA
2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
Prepared for scrubber installation
Timeline for existing and new environmental regulations
06 GREEN DOLPHIN GREEN DOLPHIN 07
1.0% ECAsulphur limit
3.5% global sulphur limit
DMA or DMB <0.1%S in California
2010
HFO prohibited in Antarctica
2011
Entry into force of EEDI and SEEMP
2013
EU MBM fully implemented (?)
2017
BW treatment on all ships
2020
Entry into force of Recycling Convention (?)
2020
- BW Convention entry intro force (?) BW treatment (D2)
on some ships
2012
0.1% ECAsulphur limit
2015NOx tier III in ECAs for NBs
2016IMO LS fuel
availability review
20180.5% global sulphur(delay until 2025?)
2020
2012 2012
20122011NOx tier II for NBs North American ECA
2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
Prepared for LNG tank installation
EMISSIONS REGULATIONS DESIGN SOLUTIONS
SOx 1 January 2015 – 0.1% S in ECA;1 January 2020 or 2025 – 0.5% S globally
Low sulphur fuels/ distillates or Scrubber system or LNG
NOx 1 January 2016 – NOx Tier III in ECA
Selective Catalytic Reduction (SCR) system or LNG
CO2 1 January 2013 – EEDI; Market Based Measures
Energy efficient design development
Prepared for LNG tank installation
Engine arrangement with SCR and scrubber installation
GREEN DOLPHIN design solutions for compliance with environmental regulations
08 GREEN DOLPHIN
■■ Main dimensions allow operation in the major Handysize bulk carrier ports
■■ High cubic and deadweight capacities ■■ No hopper or top wing tanks in cargo holds 2, 3 and 4 – easy stowage of project cargoes and steel coils
■■ Separated side and double bottom ballast tanks for dirty and clean ballast water, avoiding sediment build-up in the double bottom
■■ Easy cargo hold cleaning to allow decreased port turnaround time
■■ Cargo holds equipped with compressed air, power and wash water supply at tank top level for portable cleaning systems
■■ Permanent bilge and wash water supply and return lines■■ Fresh water storage tanks for cargo hold cleaning and wash water holding tanks
■■ Trunked ladders, shedder plates , steep hopper plates (in holds 1 and 5)
■■ Wide hatch openings fitted with foldable double-skin steel hatch covers
■■ Electric variable frequency drive deck cranes■■ GRP pipes for ballast and bilge main lines■■ High tank top load capacity, fitted for steel coil loading■■ Prepared for transportation of packaged dangerous goods■■ Prepared for container loading on hatch covers incl. lashing points
■■ Timber cargo on hatch covers ■■ Timber cargo on deck (optional)
Efficient cargo handling and easy cargo hold cleaning
Operational flexibility and maintenance friendliness
Midship section representative for cargo holds 2-4, steel coil loading
08 GREEN DOLPHIN GREEN DOLPHIN 09
■■ Double hull construction■■ Designed in accordance with IACS Common Structural Rules (CSR) for Bulk Carriers
■■ Continuous hatch coamings■■ Safe working environment for crew and stevedores ■■ Citadel for crew protection■■ A60 engine room bulkhead■■ Cargo hold CO2 firefighting system
■■ All fuel oil tanks located in the engine room■■ Temperature regulation of fuel oil tanks adjacent to cargo hold 5
■■ Available with ICE class (ICE-1C) ■■ No need to use cargo hold 3 in heavy ballast condition, adequate ballast water capacity provided in the double sides and double bottom
Highest structural standards for bulk carriers
Safe, robust and reliable
Safety arrangement – clearly marked ladders and handrails
10 GREEN DOLPHIN
Main particularsLength over all: 180 mLength between perpendiculars: 177 mBreadth: 32 mDepth: 15 mDraught, scantling: 10.5 mDraught, design: 9.5 mEndurance, service speed: 18,000 nmFreeboard: B Complement: 24 + 1 Pilot
Deadweight and cargo hold capacity Deadweight, scantling: 38,800 mtDeadweight, design: 33,400 mtCubic capacity (grain): 50,500 m3
• Hold no. 1: 8,100 m3
• Hold no. 2: 11,100 m3
• Hold no. 3: 10,800 m3
• Hold no. 4: 11,100 m3
• Hold no. 5: 9,400 m3
Hatch openingsNo.1 hold: 9.6 x 20.8 / 6.4 x 16.2 mNo. 2-5 holds: 20.0 x 27.0 m
Uniform distributed loadsDeck: 4 mt/ m2
Hatch covers: 3 mt/m2
Tank top: 25 mt/ m2
CapacitiesHeavy fuel oil: 1,350 m3
Marine diesel oil, marine gas oil: 150 m3
Fresh water: 250 m3
Ballast water: 12,400 m3
Cargo hold wash water: 250 m3
• All fuel oil tanks arranged in engine room• No cargo hold for heavy ballast condition
Cargo listSolid bulk cargoes, e.g. ore, grain; IMSBC Code cargoes (including dangerous solid
bulk cargoes), all Group A and C cargoes, e.g. cement, distillers dried grains with solubles (DDGS); Group B cargoes, e.g. coal, DRI(A), fertiliser, seedcake(a), sulphur, wood products.
Steel coil loading: 2 tiers of 20 t/coil Timber cargo on hatch coverOptional: Container fitted (2-tiers on hatch covers)Optional: Timber cargo on deck
Machinery Main engine: Wärtsilä 5RT-flex50• CMCR: 6,100 kW x 99.0 r/min• CSR: 4,575 kW x 89.9 r/min Auxiliary engines: 3 x 500 kWEmergency generator: 120 kW Ballast pumps: 2 x 600 m3/hBallast water treatment plant: 2 x 600 m3/h
GREEN DOLPHIN 1110 GREEN DOLPHIN
Optional:• Exhaust Gas Scrubber for main and
auxiliary engines – SOx reduction • Selective Catalyst Reducer (SCR) for main
and auxiliary engines – NOx reduction (Tier III)
• Dual-fuel configuration – SOx, NOx and CO2 reduction:
− Low-speed dual-fuel main engine − Medium-speed dual fuel auxiliary engines
− Wärtsilä LNGPac with 485 m3 (max. 550 m3) capacity double-wall vacuum-insulated IMO Type C LNG tank and gas supply system
Speed and fuel consumption at design draughtService speed at CSR with 15% sea margin: 14.0 knDaily main engine fuel consumption at 14.0 kn service speed: 17.7 t
Daily main engine fuel consumption at 10.0 kn slow steaming: 6.4 t (ISO Ambient Conditions, LCV=42,700 kJ/kg)
EEDIAttained index 4.7 gCO2/tonne nm (25%below IMO reference line for bulk carriers)
EquipmentElectric variable frequency drive deck cranes: 4 x 30 t SWL, 26 m max. outreachHatch covers: 5 x wide steel foldable, double-skin, integrated grain feeder and cement openingsDeck and hatch cover lashing pointsCargo hold CO2 firefighting systemCargo hold compressed air, power and wash water supplyCargo hold natural ventilation systemSewage water treatment systemIntegrated bilge water treatment system (IBTS)
Waste management system Remotely operated valves and tank readingsOptional: Shaft torque and fuel consumption monitoring systemsOptional: Cargo hold mechanical ventilation system
Design and ClassificationDesign: Shanghai Merchant Ship Design & Research InstituteClassification society: Det Norske Veritas Class notation: +1A1 Bulk Carrier ESP, CSR, BC-A (CH 2&4 empty), GRAB(20), DG-B, BIS, TMON, BWM-T, CLEAN, E0, HA(+), COAT-PSPC(V), RecyclableOptional notations: DK(+), DG-P, ICE-1C, Gas Fuelled
Phase 1 – Concept design: SDARI, DNV, Wärtsilä January-May 2012 Phase 2 – Basic and
detailed design: SDARIApproval in principle: DNV
DNV is a global provider of leading risk management competence. We help customers safely and responsibly improve their business performance, and turn risks into rewards. DNV is an independent organisation with dedicated risk professionals in more than 100 countries.
www.dnv.com
SDARI is a ship design consultant under China State Shipbuilding Corporation (CSSC) with more than 600 employees. SDARI is the market leader in merchant ship design and development in China and has accumulated more than 800 as-built designs in the past four decades.
http://sdari.cssc.net.cn/Contact: [email protected]
Wärtsilä is a global leader in complete lifecycle power solutions for the marine and energy markets. By emphasising technological innovation and total efficiency, Wärtsilä maximises the environmental and economic performance of the vessels and power plants of its customers.
www.wartsila.com
In the next phase, SDARI will continue to prepare the basic and detailed design. DNV will later carry out the approval in principle.