HMC's open J-Lay Tower allows structures to be installed with one vessel:

• Templates
• Inline Tee Assemblies (ITA)
• Pipeline End Manifolds (PLEM)
• Installation of larger and integrated or multi-functional in-line structures

Benefits

• Improved project structure
• Reduced mobilization costs

Features
The DCV Balder J-lay tower has been designed with three main features:

• Hoisting capacity of 1,050 t 
  This provides the possibility of field development in a water depth of 3,500 m.
  
  
• Use of collars instead of tensioners 
  This system replaces friction based systems (tensioners) and provides less risk in the event system failure of dropping the pipe.
  
  
• Open tower concept allowing installation of in-line structures  
  Deepwater field developments are a combination of pipelines and structures like templates, Inline Tee Assemblies (ITA), PipeLine End Manifolds (PLEMs). etc. Using the open J-lay tower, all these structures can be installed with one vessel, improving the project schedule and reducing mobilisation costs.
  

Details of Hex and Quad Modes
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