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6.0 Fleet Sizes
As of January 2008 there were 859 new vessels on order globally (Table 3 below), however much of the
supply and smaller anchor handling fleet is old. Table 4 shows the average age of the total offshore global
fleet at 22.23 years. Newer vessels are generally larger (PSVs) and more powerful (large AHTS vessels) than
those built earlier and there is a need for modernisation of the fleet in most categories.
Table 3: Vessels types and Global Fleet size at January 2008 and on order
Fleet Size
Vessel Type January 2008 Orderbook
Anchor Handling Tugs (AHT) ................................. 522 17
Anchor Handling Tug Supply (AHTS) ........................... 1537 421
Diving Support (DSV) ....................................... 65 27
Heavy Lift/Crane ........................................... 27 4
Maintenance .............................................. 47 0
Mooring ................................................. 13 0
Multi-Functional Subsea Support ............................... 129 62
Pipe Layer ............................................... 14 5
Platform Supply (PSV) ...................................... 480 213
ROV/Sub Support .......................................... 18 22
Standby/Rescue ............................................ 323 34
Seismic Survey ............................................ 162 24
Well Stimulation ...........................................
Misc (includes ; Crew Boats; Coastguard; Flotels; Gravel/Stone
Discharge; Laybarges; Pollution Control; Survey; Utility Workboat;
16 12
Cable, Umbilicals & FP/Flowline Lay) ......................... 2338 18
TOTAL Offshore fleet ...................................... 5691 859
Table 4: Total Global Existing Fleet breakdown by Type, Percentage and
Average Age at January 2008
Vessel Type Number
Percentage of
Total Fleet Average Age
Anchor Handling Tugs (AHT) ........................ 522 9.17% 23.86
Anchor Handling Tug Supply (AHTS) .................. 1537 27.0% 21.50
Diving Support (DSV) .............................. 65 1.14% 26.14
Heavy Lift/Crane . . . ............................... 27 0.47% 31.15
Maintenance ..................................... 47 0.83% 28.91
Mooring ........................................ 13 0.23% 23.85
Multi-Functional Subsea Support ...................... 129 2.27% 16.41
Pipe Layer. ...................................... 14 0.25% 20.64
Platform Supply (PSV) ............................. 480 8.43% 10.12
ROV/Sub Support . . ............................... 18 0.32% 28.00
Standby/Rescue ................................... 323 5.68% 23.31
Seismic Survey ................................... 162 2.85% 28.54
Well Stimulation . . . ............................... 16 0.28% 19.81
Misc........................................... 2338 41.08% 23.86
TOTAL FLEET ................................... 5691
TOTAL AVERAGE AGE ............................ 22.23
7.0 Newbuilding Rigs by Numbers
With a total of 562 offshore rigs built and order in February 2008, table 5 demonstrates there is
approximately 27% of the current drilling fleet on order. The majority of these rigs are due for delivery
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