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“Changing Industry Demands Redesign the OSV’s”

This paper was first presented at the “ 4th International Conference on Technology and Operation of Offshore Support Vessels OSV Singapore 2011 organised by The Joint Branch of the Royal Institution of Naval Architects and The Institute of Marine Engineering, Science & Technology (Singapore), The Centre for Offshore Research & Engineering, National University of Singapore, and Newcastle University Marine International, Singapore.

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INTRODUCTION

Deeper Waters, newer Hazards

Harsher environment

Larger Rig mooring equipment

Existing generation of OSV’s

Crashing into platforms

Bourbon Dolphin

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NEW RULES AND REGULATIONS

OSV’s carry Noxious Liquids, chemicals, Drill cuttings

> 100 personnel on board, SPS Code

Dynamic Position Keeping

Probabilistic Damage Stability

Crew Comfort

Environmental features

High Capex costs – more than a VLCC

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ANCHOR HANDLING

Existing AH Tugs 150T – 200T BP.

Deeper Waters, Larger Rigs

Require BP > 300 Ton

Winches > 600 Ton Brake Capacity

> 25000 BHP

Robotic AH Cranes

ARF to land large anchors on deck

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ANCHOR HANDLING

1 |The Supply Market

22 May 2012 6

TERM RATES - AHTS

www.fearnleys.com

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10 000

20 000

30 000

40 000

50 000

60 000

70 000

80 000

Term fixture rates - AHTSWorld Wide (US$)

AHTS 7 - 10,000 BHP AHTS 10,000 + BHP AHTS 5 - 6,999 AHTS 7-9,999 BHPAHTS 10-11,999 BHP AHTS 12-16,499 BHP AHTS 16,500 BHP+

© Fearnley Offshore Supply

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TRANSPARENT BOLLARD PULL

BOURBON DOLPHIN DISASTER

Lack of Stability

Overstated BP

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BOURBON DOLPHIN

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SUPPLY SHIPS

Drilling Fluid Technology

Waste cuttings backloads

Hydrogen Sulphide

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Supply

1 |The Supply Market

22 May 2012 11

TERM RATES - PSV

www.fearnleyoffshoresupply.com

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5 000

10 000

15 000

20 000

25 000

30 000

35 000

40 000

45 000

50 000

Term fixture rates - PSVWorld Wide (US$)

PSV USD (3000 dwt+) PSV less than 750m2 deck PSV larger than 750m2 deck

© Fearnley Offshore Supply

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SPS CODE

Subsea Construction and Maintenance

Diving Support

Pipe Laying

Seismic

Research and Training

Well Intervention 200 personnel

Need higher standard of Safety

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CREW COMFORT

Larger number of

crew

Demanding work

Limit Noise and

Vibration levels

Natural Light,

Indoor Climate

Recreation rooms, Gyms,

Min. rest hours

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DYNAMIC POSITIONING Deeper waters subsea pipes no anchor mooring

DP2 more common requirement

Premium on DP vessels

DP3 not mandated

Diving vessels opt for DP3

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FUEL CONSUMPTION

Charterers look for fuel efficiency

Innovative Hull and Propulsion Designs

X-Bow

Hybrid combination of Diesel Mechanical and PTI

Depends on operational profile

Long voyages of supply vessel favor Hybrid

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AH needs high BP - Diesel mechanical straight shaft Diesel Hybrid

Supply vessels need less power but economic steaming

Diesel mechanical and Hybrid have nearly similar consumption

Low Load Longer steaming between platforms Favor Hybrid savings 500T per year

FUEL CONSUMPTION

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FUEL CONSUMPTION

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FUEL CONSUMPTION

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FUEL CONSUMPTION

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FUEL CONSUMPTION

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FUEL CONSUMPTION

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Hybrid propulsion suited for

longer voyages, reduce SOx,

Nox.

LNG will also reduce Nox,

Sox, but storage costs

CLEAN notation imposed by Authorities

GREEN

GREEN TECHNOLOGY

25THANK YOU