The SEPLA is a suction embedded plate anchor. This patented technology from InterMoor, that combines two proven anchoring concepts – suction piles and plate anchors – to increase the anchor point efficiency of pre-set moorings and reduce mooring system costs for floating structures. It is applicable to oil & gas as well as floating renewables and aquaculture.

The SEPLA system uses a suction follower (similar to a suction anchor) to embed a plate anchor deeply in the soil. The suction follower is retracted once the plate anchor is brought to design soil depth and can be used again and again to install additional plate anchors.

 

Technical Advantages

The SEPLA technology combines the advantages of suction embedment and plate anchors. Because they utilise a suction follower, SEPLA anchors are classified as direct embedment anchors. This means the precise location and depth of the anchor is known (whereas location and depth of drag-embedded anchors can only be estimated). In congested fields, where a clear area to drag in an anchor may not exist, SEPLA is the ideal solution.

  • Suction embedment accuracy
    • Suction pile precision
    • No dragging necessary
    • Desired geographical position
    • Desired depth penetration
    • Ideal for crowded and congested areas
  • Plate anchor capacity
    • Vertical load capable (VLA)
    • Geotechnically more efficient than suction piles (holding capacity / weight)

 

Cost Advantages

  • Less material
    • More weight efficient than piles (i.e. cheaper to build)
  • Simpler fabrication process
    • Half the time
    • Half the cost
  • Efficient transport / installation
    • Multiple SEPLAs can be carried on a small installation vessel
    • Reduced installation time

 

Environmental Advantages

  • Less material
    • Less steel (24 tonnes vs 68 tonnes suction pile)
  • Smaller carbon footprint
    • Fewer boat trips
  • Recoverable system
    • Nothing mechanical left subsea