“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.
1
INTRODUCTION
Deeper Waters, newer Hazards
Harsher environment
Larger Rig mooring equipment
Existing generation of OSV’s
Crashing into platforms
Bourbon Dolphin
2
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
3
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
4
ANCHOR HANDLING
5
1 |The Supply Market
TERM RATES - AHTS
© Fearnley Offshore Supply
Term fixture rates - AHTS
World Wide (US$)
80 000
70 000
60 000
50 000
40 000
30 000
20 000
10 000
0
AHTS 7 - 10,000 BHP
AHTS 10-11,999 BHP
22 May 2012
AHTS 10,000 + BHP
AHTS 12-16,499 BHP
www.fearnleys.com
AHTS 5 - 6,999
AHTS 16,500 BHP+
6
AHTS 7-9,999 BHP
TRANSPARENT BOLLARD PULL
BOURBON DOLPHIN DISASTER
Lack of Stability
Overstated BP
7
BOURBON DOLPHIN
8
SUPPLY SHIPS
Drilling Fluid Technology
Waste cuttings backloads
Hydrogen Sulphide
9
Supply
10
1 |The Supply Market
TERM RATES - PSV
© Fearnley Offshore Supply
Term fixture rates - PSV
World Wide (US$)
50 000
45 000
40 000
35 000
30 000
25 000
20 000
15 000
10 000
5 000
0
PSV USD (3000 dwt+)
22 May 2012
PSV less than 750m2 deck
www.fearnleyoffshoresupply.com 11
PSV larger than 750m2 deck
SPS CODE
Subsea Construction and Maintenance
Diving Support
Pipe Laying
Seismic
Research and Training
Well Intervention
 200 personnel
Need higher standard of Safety
12
CREW COMFORT
Larger
number
of crew
Demanding
work
Limit
Noise and
Vibration
levels
Natural
Light,
Indoor
Climate
13
Recreation
rooms,
Gyms,
Min. rest
hours
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
14
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
15
FUEL CONSUMPTION
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
16
FUEL CONSUMPTION
17
FUEL CONSUMPTION
18
FUEL CONSUMPTION
19
FUEL CONSUMPTION
20
FUEL CONSUMPTION
21
GREEN TECHNOLOGY
GREEN
Hybrid
propulsion
suited for longer
voyages, reduce
SOx, Nox.
LNG will also
reduce Nox, Sox,
but storage
costs
22
CLEAN notation
imposed by
Authorities
THANK YOU
25