Thialf detail
Data Sheet
Thialf, Heerema's largest deepwater construction vessel (DCV), and is capable of a tandem lift of 14,200 t (15,600 short tons). The dual cranes provide for depth reach lowering capability as well as heavy lift capacity to set topsides. This multi-functional dynamic positioned DCV is tailored for the installation of foundations, moorings, SPARs, TLPs and integrated topsides, as well as pipelines and flowlines.
Dimensions Length overall 201.6 m 661 ft
Length of vessel 165.3 m 542 ft
Width 88.4 m 290 ft
Depth to workdeck 49.5 m 162 ft
Draught 11.8-31.6 m 43-104 ft
GRT 136,709 t -
NRT 41,012 t -
Accommodation / Helicopter Deck
The living quarters are equipped to accommodate 736 men. All quarters have heating and air conditioning facilities. The helicopter deck is suitable for a Boeing Chinook 234.
Life-Saving / Fire-fighting
Life-saving and fire-fighting equipment according to the latest governmental requirements.
Mooring System
12 Delta Flipper anchors of 22.5 t each, on 3 1/8" wire ropes of 2,400 meters (8,000 ft) long. Minimum breaking strength 480 t. Kongsberg Albatross ADP 503 and ADP 311 automatic and dynamic positioning and mooring assistance.
Diving System
Containerized saturation diving system with diving bell can be made available.
Portside Crane Main hoist revolving 7,826 st up to 31.2 m (102 ft)
Auxiliary hoist 1,000 st 36.0 - 79.2 m (120 - 260 ft)
Whip hoist 220 st 41.0 - 129.5 m (134 - 425 ft)
Starboard Crane Main hoist revolving 7,826 st up to 31.2 m (102 ft)
Auxiliary hoist 1,000 st 36.0 - 79.2 m (120 - 260 ft)
Whip hoist 220 st 41.0 - 129.5 m (134 - 425 ft)
Main Hoist Lifting Height
95 m (312 ft) above work deck for each crane. Lowering depth of auxiliary hoists 460 m (1,500 ft) below work deck at minimum radius.
Main Hoist Plumbing Depth
Lowering depth of main hoist at minimum radius with 3,500 t is 307 meters below heel point and with 2,990 t, 351 meters below heel point. Heel point is 24.4 meters (80 ft) above work deck.
Tandem Lift
Main hoist 14,200 t (15,600 sht) at 31.2 meters (102 ft) radius (subject to stability calculations).
Ballast System
Ballast pump capacity 20,800 cubic meters/hour.
Dynamic Positioning System
The Thialf is equipped with a Class III Dynamic Positioning system with the following characteristics:
Thrusters
6 x 5,500 kW - 360 degrees azimuth, total thrust 400 t
Modes of Operation
• Manual
• Joy-stick
• Auto-pilot
• Full DP mode
• Position mooring
Special DP functions
• Track follow
• Heavy lift
• Follow floating object
• External force compensation
Position reference systems
• 2 x satellite DGPS
• 1 x mechanical taut wire (300 m)
• 1 x Artemis
• 2 x acoustic SSBL/LBL
• 1 x Fan-beam laser
Transit speed with 1 tug
Max. 7.0 knot at 12.5 m draft
Deck Load / Transit Speed
Deck load capacity 15 t/square meter
Total deck load capacity 12,000 t
Transit speed with 12,000 tons deck load 6 knots at 12.5 meters (43.6 ft) draft.
Thialf detail
Data Sheet
Thialf, Heerema's largest deepwater construction vessel (DCV), and is capable of a tandem lift of 14,200 t (15,600 short tons). The dual cranes provide for depth reach lowering capability as well as heavy lift capacity to set topsides. This multi-functional dynamic positioned DCV is tailored for the installation of foundations, moorings, SPARs, TLPs and integrated topsides, as well as pipelines and flowlines.
Dimensions Length overall 201.6 m 661 ft
Length of vessel 165.3 m 542 ft
Width 88.4 m 290 ft
Depth to workdeck 49.5 m 162 ft
Draught 11.8-31.6 m 43-104 ft
GRT 136,709 t -
NRT 41,012 t -
Accommodation / Helicopter Deck
The living quarters are equipped to accommodate 736 men. All quarters have heating and air conditioning facilities. The helicopter deck is suitable for a Boeing Chinook 234.
Life-Saving / Fire-fighting
Life-saving and fire-fighting equipment according to the latest governmental requirements.
Mooring System
12 Delta Flipper anchors of 22.5 t each, on 3 1/8" wire ropes of 2,400 meters (8,000 ft) long. Minimum breaking strength 480 t. Kongsberg Albatross ADP 503 and ADP 311 automatic and dynamic positioning and mooring assistance.
Diving System
Containerized saturation diving system with diving bell can be made available.
Portside Crane Main hoist revolving 7,826 st up to 31.2 m (102 ft)
Auxiliary hoist 1,000 st 36.0 - 79.2 m (120 - 260 ft)
Whip hoist 220 st 41.0 - 129.5 m (134 - 425 ft)
Starboard Crane Main hoist revolving 7,826 st up to 31.2 m (102 ft)
Auxiliary hoist 1,000 st 36.0 - 79.2 m (120 - 260 ft)
Whip hoist 220 st 41.0 - 129.5 m (134 - 425 ft)
Main Hoist Lifting Height
95 m (312 ft) above work deck for each crane. Lowering depth of auxiliary hoists 460 m (1,500 ft) below work deck at minimum radius.
Main Hoist Plumbing Depth
Lowering depth of main hoist at minimum radius with 3,500 t is 307 meters below heel point and with 2,990 t, 351 meters below heel point. Heel point is 24.4 meters (80 ft) above work deck.
Tandem Lift
Main hoist 14,200 t (15,600 sht) at 31.2 meters (102 ft) radius (subject to stability calculations).
Ballast System
Ballast pump capacity 20,800 cubic meters/hour.
Dynamic Positioning System
The Thialf is equipped with a Class III Dynamic Positioning system with the following characteristics:
Thrusters
6 x 5,500 kW - 360 degrees azimuth, total thrust 400 t
Modes of Operation
• Manual
• Joy-stick
• Auto-pilot
• Full DP mode
• Position mooring
Special DP functions
• Track follow
• Heavy lift
• Follow floating object
• External force compensation
Position reference systems
• 2 x satellite DGPS
• 1 x mechanical taut wire (300 m)
• 1 x Artemis
• 2 x acoustic SSBL/LBL
• 1 x Fan-beam laser
Transit speed with 1 tug
Max. 7.0 knot at 12.5 m draft
Deck Load / Transit Speed
Deck load capacity 15 t/square meter
Total deck load capacity 12,000 t
Transit speed with 12,000 tons deck load 6 knots at 12.5 meters (43.6 ft) draft.