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Global Maritime offers design analyses and verification of offshore structures. We combine state-of-the –art computer modelling techniques with practical hands-on knowledge of fixed and floating platforms and mobile offshore units.Drawing on over 30 years of operational and consultancy experience, Global Maritime delivers tailored designs that meet both client requirements and the demands of the offshore environment. Our design services span from concept development, through basic design and classification society approval to detailed design and shipyard support during construction and commissioning.
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www.globalmaritime.com
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Global Maritime offers design analyses and verification of offshore structures. We combine
state-of-the –art computer modelling techniques with practical hands-on knowledge of fixed
and floating platforms and mobile offshore units.
Drawing on over 30 years of operational and consultancy experience, Global Maritime
delivers tailored designs that meet both client requirements and the demands of the
offshore environment. Our design services span from concept development, through basic
design and classification society approval to detailed design and shipyard support during
construction and commissioning.
Design Experts
www.globalmaritime.com
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GM4000 D Semi-Submersible Drilling Unit (inset A)
Three units are under construction / built at Yantai Raffles
Shipyard in China.
Client: China Oilfield Services Limited
GM4000-WI Semi-Submersible Drilling Unit (inset B)
The unit is under construction in COSCO (ZHOUSAN) Shipyard in
China.
Client: China Oilfield Services Limited
GM5000 Semi-Submersible Drilling Unit
GM9000 Semi-Submersible Drilling Unit
GM500 Semi-Submersible Accommodation Unit (inset C)
One unit currently under construction at Cosco in China.
Client: Axis Offshore A/S
GM Constructor The GM-Constructor is a single lift platform decommission vessel.
The flexible de- sign approach allows for other users such as
accommodation and heavy construction support (inset D).
Service Jack The “Service Jack” is a heavy lift installation and decommissioning
jack-up.
There are currently two in service.
Client: Master Marine
Wind Jack The “Wind Jack” is a Jack-Up Wind turbine installation and
maintenance vessel designed for self sufficient installation of offshore wind turbines and foundations (inset E).
Global Maritime Design Examples
A
E
C
B
D
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Main Dimensions and Equipment Specifications
Overall Length 104,50m
Overall Beam 68,30
Column Size lxb (m) 15,30 x 15,30
D Pontoon top (m) 11,00
D Transit (m) 10,88
D Survival (m) 16,50
D Operation (m) 19,00
Air gap Survival (m) 15,00
Water depth (m) 70-500 (1200 max)
Drilling depth (m)* 10000
Deck area (m2)* 2000+
Accommodation/Safety 130/140 persons certificate
DP System DP-3
Helideck Super Puma, Sikorsky S92
Design Temperature -25 to +35 (deg C) 0 below transit WL
The North Sea Rig-GM 4000D
3 units under construction /
built
Class: +1A1 Column-
Stabilized Drilling Unit,
DRILL (N), WELL (N),
CRANE, DYNPOS-AUTRO,
POSMOOR-ATA, HELDK- SH,
E0, ECO CLEAN, ICE-L
WINTERICED BASIC.
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Main Dimensions and Equipment Specifications
Overall Length 106.00m
Overall Beam 65.00m Depth Moulded 35.85m Submerged Depth 8.50m – 17.75m
Displacement 21,100 tons – 34,000 tons Deck load capacity 4,000 tons Safety certificate 120 persons Cabins Single cabins Fixed 120,
according to NMD/NORSOK req.
Helideck Sikorsky S61-N, S-92, Super Puma, Sikorsky S92 DP system Kongsberg Maritime SDP-22 + SDP-12 back-up Engines 6 x 4,840 kW diesel generator,
1 x 1,138 kVA emergency generator Thrusters 6 x 3.8 MW (68 tons) fixed pitch, controllable speed Ballast Pumps 4 off, combined capacity 3,000 m3 / h
Cranes 1 x 15T / 30T SWL @ 42m radius offshore, 1 x 15T / 30T SWL @ 50 radius offshore, SB crane 75T heavy lift at 20m
Winches 4 double winches for wire 750 tons
Drilling Equipment - TTDR and Intervention Package
Max water depth 1,500m Max drilling depth 5,000m
Dynamic hook load 350 tons
GM4000 – WI –Well Intervention
The unit is under
construction
Only compact semi-
submersible vessel
approved for North Sea
operations
Conventional mooring in
addition to DP3 allowing
for low cost mooring in
shallow waters
Self-propelled at 12 knots,
no water depth restrictions
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Main Dimensions and Equipment Specifications
Overall Length 104.5m
Overall Beam 66.3m
Height (box bottom) 29.25m
Height (main deck) 37.45m
Transit Draft 8.90m - 9.55m
Survival Draft 15.75m
Operational Draft 17.75m
Displacement: 21,100 – 34,000 Tonnes Lightship approx. : 19,500 Tonnes Safety Certificate: 490 persons Helideck: Sikorsky S61-N, Super Puma Cabins Single cabins: 490 (410 with daylight)
(According to NMD/NORSOK requirements) DP System: Kongsberg Maritime SDP-22 + SDP-12 back-up Engines: 6 x 4840 kW Diesel generator
1 x 1138 kW Emergency generator Thrusters: 6 x 3,8MW (68 ton) fixed pitch, controllable speed Ballast Pumps: 4 off, combined capacity 3000 m3/h Deck Load Capacity: 4,000 Tonnes Cranes: 1 x 15T/30T SWL @ 42m radius offshore,
1 x 15T/30T SWL @ 50 radius offshore,
SB crane 75T heavy lift at 20m. Winches: 2 double winches for wire 750 tonnes
2 double winches for wire 750 tonnes
(6 drums with 400m 96mm wire, 2 drums fwd
above each column with 1100m 96mm wire.) Telescopic gangway: 38,5m with a stroke of; +/- 7m
GM4-500A-Accomodation Unit
Currently under
construction in
Cosco Shipyard,
China
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Main Dimensions and Equipment Specifications
Overall length: 115.0 m
Overall width: 93.5 m Height (to main deck): 47.0 m Submerged depth: 6.5 m - 39.0 m U-slot dimensions: 77.5 m x 57.5 m
Displacement: 31 000 - 63 800 t Lightship weight: 39 800 t (incl. lifting beams) Cabins 300 (double cabins)
Engines 6 x 4 840 kW Diesel generator 10 kW Emergency generator
Safety Certificate 300 persons Helideck Sikorsky S92, S61N, Super Puma
Thruster 6 x 3,8MW fixed pitch, contr. speed Ballast pumps (in hull) 8 off, combined capacity 6000 m3/h @ 6 bar (add. pumps in temp. buoyancy tanks) Towing arrangement 2 off Bollard pull 250 MT each
Deck Cranes 50 m outreach, capacity 15 t Whip line, 30 t main hook, heavy lift 75 t @ 20 m
GM Constructor-A Multi Purpose Vessel
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Our in-depth knowledge and expertise in design has enabled successful completion of the design of the ‘Service Jack’ unit currently two have
been constructed in Indonesia (Nora and Haven). The Service Jack is capable of North Sea Operations in 80m water depth (client Master
Marine).
Main Dimensions and Equipment Specifications (Nora) Length overall (incl. Helideck): 117,62 m Length p.p: 104,54 m
Width overall: 50 m Hull depth: 9 m Main deck area: 2500 m2
Main deck load capacity: Maximum 7200 T,
Deck: 10 T/m2 Cranes: 2 x OMC 750 MT with 52 m boom
Max skidding capacity: 7200T Accommodation: 95 cabins, (maximum 260 persons) 20 x Single Cabins, 30 x Double Cabins
45 x Quad Cabins
Legs Length: 130 m leg Footing area: 180m2
Jetting system: Rated 130bar
Propulsion Units Thrusters: 5 x 2500 kW + 1 x 1750 kW Schottel SRP thrusters
Speed: 8 Knots
Service Jack - Self Propelled Jack Up Vessel
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Main Dimensions
Overall length: 120 m
Overall width: 50 m
Depth Hull 10 m
Design Draught: 6.75 m
Deck Area: 3500 m²
Survival Conditions
Water Depth 60m – 80m
Return Period 50 year Return (North Sea)
Variable Load
Max. Deck Load Up to 7000te
Legs
Leg Length: 106m – 130m
Sup Can Ø: 14.5m
Spud Can Area: 180m²
Jacking System: Rack and Pinion
Accommodation
Cabins: 90 (double cabins)
Machinery
Engines: 5 x 3.7 MW Diesel generators
Dynamic Positioning DP2
Thruster: 3 x Azimuth 2x Tunnel Thrusters
Deck Equipment
Primary Crane 1200te @ 33m, 950te @ 40m, 180te
@ 114m
Whip 100te @ 121m
Deck Crane 1 5te @ 11.5m (Manriding)
Deck Crane 2 5te @ 11.5m
Helideck Sikorsky S92, S61N, Super Puma
Wind Jack – Multipurpose Jack Up Vessel
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