HEAVY LIFT ASSETS & SEMI-SUBMERSIBLE HEAVY LIFT VESSELS
About the application of InTank™ on heavy transport semi-submersible vessels
Marship Engineering and principal partner Scienco®/FAST InTank™ have been involved in the turn-key supply of the ballast water treatment systems for a series of vessels of the Boskalis Heavy Transport Fleet. Boskalis is a global offshore and dredging contractor and service provide with its origins in the Netherlands. Their fleet offers versatile transportation and installation solutions by using a self-propelled vessel with a crane. Boskalis also owns and operates a large fleet of semi-submersible heavy transport vessels for which the InTank™ BWTS was selected.
The system is innovative and supports the operational profile of these mighty vessels as the solution treats ballast water during vessels voyage distinguishing it from most of the other systems in the market. Other benefits are a filterless treatment loop, ability to perform tank per tank or a selected tank group as well as the absence of treatment during in-place flood- and deballast operations. In some cases the vessels can treat the transit water ballast volume (in full) when relocating to a new area project.
Typical specifications outline for the heavy lift semi-submersible are;
- Number of water ballast tanks: 65 to 95
- Dynamic Water ballast volumes in place: 120.000 m³
- No of ballast pumps (+ Compressed air): 4 to 6
- Flow rate (per pump): Avg. 2000 m³/hour
- Transit Water Ballast Volumes: avg. 26.000 m³

About the application of InTank™ on heavy transport semi-submersible vessels
Marship Engineering and principal partner Scienco®/FAST InTank™ have been involved in the turn-key supply of the ballast water treatment systems for a series of vessels of the Boskalis Heavy Transport Fleet. Boskalis is a global offshore and dredging contractor and service provide with its origins in the Netherlands. Their fleet offers versatile transportation and installation solutions by using a self-propelled vessel with a crane. Boskalis also owns and operates a large fleet of semi-submersible heavy transport vessels for which the InTank™ BWTS was selected.
The system is innovative and supports the operational profile of these mighty vessels as the solution treats ballast water during vessels voyage distinguishing it from most of the other systems in the market. Other benefits are a filterless treatment loop, ability to perform tank per tank or a selected tank group as well as the absence of treatment during in-place flood- and deballast operations. In some cases the vessels can treat the transit water ballast volume (in full) when relocating to a new area project.
Typical specifications outline for the heavy lift semi-submersible are;
- Number of water ballast tanks: 65 to 95
- Dynamic Water ballast volumes in place: 120.000 m³
- No of ballast pumps (+ Compressed air): 4 to 6
- Flow rate (per pump): Avg. 2000 m³/hour
- Transit Water Ballast Volumes: avg. 26.000 m³