CONOSHIP INTERNATIONAL:Eco-designs for Shortsea Vessels

10/06/2014 Ir Guus van der Bles3

7th SHORTSEA-EURO Antwerp 2014

Facing EEDI with eCONOlogy

• Conoship International• Innovations in Ship Design• EEDI => Extreme Fuel Efficient

‘ConoDuctTail’ = eCONOlogical• Innovations in LNG

Program

Facing EEDI with eCONOlogy

• Ir. Guus van der Bles: CONOSHIP & Ass.Prof. Delft University of Technology

• Drive: application of ‘eCONOlogical’ Innovations in Ship Design

• Focus R&D: eCONOmy & eCOlogy• Reduction of fuel & emissions• Propulsion on LNG & Wind-assisted• ConoSeaBow & ConoDuctTail

Introduction

Facing EEDI with eCONOlogy

• Design Office since 1953 in The Netherlands, independent

• More than 2000 vessels built of our design

• Market Leader in Short Sea Ship Design

• Innovative designs , all ship types L = 30 – 130 m

• LNG Tanker 1100 m3

Conoship International

Facing EEDI with eCONOlogy

• Implement practical innovations:• Reduce fuel consumption;• Dual Fuel engines, LNG

propulsion

• Client focus & interaction: ready to realize your vision

Design @ Conoship: combi of specialisms• Focus:• General Arrangement• Hull form & Speed-power

Facing EEDI with eCONOlogyChallenge: Short Sea & Open Top - project cargo

< 3000 GT, OpenTop , Max m2

Facing EEDI with eCONOlogySmallest mini Heavy Lift 2 x 120 ton < 3000 GT >18kn

Facing EEDI with eCONOlogyLargest deck area for 85 m vessel

Facing EEDI with eCONOlogySpecials

Facing EEDI with eCONOlogyDredging vessels < 4500 m3

Facing EEDI with eCONOlogyWorld smallest LNG Tanker

Facing EEDI with eCONOlogyExtreme Fuel Efficient Short Sea Cargo Ships

Facing EEDI with eCONOlogyHow to create an “EEDI Champion” ?

• Reduce fuel consumption• Maximize deadweight• Optimize eCONOlogy for

actual required service speed• Focus Conoship:– Hull form aft– Overall energy efficiency– Short sea, high Cb

Facing EEDI with eCONOlogy3700 dwt, 10 kts, 749 kW installed: < 3 ton fuel/day !

Facing EEDI with eCONOlogyExtreme Fuel Efficient: eCONOlogical optimization

ConoDuctTail:• Focus Conoship:

innovative hull forms !• Reduction of emissions

and fuel consumption• 1e focus: aftship

‘ConoDuctTail ‘• Goal: best overall

energy efficiency !(= different from lowest

resistance...)

Facing EEDI with eCONOlogyR&D ConoDuctTail: TU Delft & Marin & Conoship

Integral CFD optimisation of aft-ship form, tunnel, nozzle &

propeller design– Maximum propeller diameter– Nozzle integrated in tunnel – Minimising resistance – Propeller design tuned to

high wake and maximumpropulsive efficiency

Facing EEDI with eCONOlogyDevelopment ConoDuctTail (1):

CFD optimisation of aft-ship form & tunnel & nozzle & propeller design

Facing EEDI with eCONOlogyDevelopment ConoDuctTail (2):

CFD optimisation of aft-ship form & tunnel & nozzle & propeller design

Facing EEDI with eCONOlogyDevelopment ConoDuctTail (3):

CFD optimisation of aft-ship form & tunnel & nozzle & propeller design

Facing EEDI with eCONOlogyDevelopment ConoDuctTail (4):

CFD optimisation of aft-ship form & tunnel & nozzle & propeller design

Facing EEDI with eCONOlogyTheory & Practice ConoDuctTail : Lady Anna (1)

CFD optimisation: 17 % reduction in resistance10.8 kn Trail speed @ 749 kW MCR, at design

draught of 4.30 m => abt. 3000 TDW.

Facing EEDI with eCONOlogyTheory & Practice ConoDuctTail : Lady Anna (2)

Service speed abt.10 kn, with 3000 to 3500 ton cargo, at average power below 700 kW

Fuel consumption less than 3.0 ton/day, trips reported at 2.7 ton/day !

Keeping of thrust inheavy seaways is fine !

EEDI = 11,3 gr CO2/ton.mile=> 60% of allowable Index

Facing EEDI with eCONOlogyConoship eCONOlogical Retrofit Programm

• Slow steaming / lower speed -> reduction optimal RPM, increase of propellor-pitch ->

• eCONOptimization:• Frequency-convertor on PTO• Modify turbo on main engine• New Prop / gearbox / larger diameter CPP• Nozzle / Duct / Boss-cap• Modification bulb / aft ship / rudder

• CFD analysis => fuel reduction=> economical evaluation &

advice

Facing EEDI with eCONOlogyLNG in Short Sea Shipping: Pioneer Knutsen

Facing EEDI with eCONOlogyRecent R&D : LNG propulsion for Short Sea Ships

Facing EEDI with eCONOlogyFeasibility Retrofit LNG in 4500 DWT MPP

Facing EEDI with eCONOlogyLNG Tank innovation:

• Double walled Stainless Steel Type C tanks

• Vacuum isolated• Double walled piping• Inherently Gas Safe• Dual Fuel engines

Facing EEDI with eCONOlogyTrailing Suction Hopper Dredger on LNG: feasibility study

Facing EEDI with eCONOlogyNew Conoship Design LNG tanker

Facing EEDI with eCONOlogy

• THANKS FOR YOUR ATTENTION

• QUESTIONS ?