Multi-pass trenching

The Royal IHC jet sleds are designed for pipeline burial in soft seabed conditions. They use high-pressure, surface-fed water through forward-facing jetting nozzles to soften the seabed and allow product burial.

An eduction system on board the sled removes material from the trench once fluidisation has occurred. Depth control is achieved using hydraulic actuation of the skids or the swords. The sled is a multi-pass tool that facilitates ongoing operations until the required burial depth is achieved. It is deployable using a vessel crane, allowing mobilisation on a range of vessels. 

We offer both ‘pipe riding’ and ‘self-supporting’ jet sleds.  

  • suitable for a variety of products 
  • capable of burials in deeper water 
  • deployable by vessel crane 
  • can be supplied with on board subsea jetting pumps.

Specifications

Description 

Specification 

Water Depth 

Surface Fed System: 0m to 80m 

Onboard Jetting: Up to 1500m 

Trench Depth 

Pipe Riding Skid: 1.5m 

Self-Supporting: 6m 

Jetting Pressure 

Maximum 14bar 

Jetting Power 

1.5MW  

Soil Strength 

Minimal skid sinkage in all sand and soft clay condition 

Eductor 

Passive inline water jet pump for each each jetting leg. Eduction from trench bottom to above outer skid positions. 

More information?

  • Robert Haylock

    Sales manager subsea vehicles and launch & recovery systems

Vessel at sea from afar

More information

We are happy to provide you with more details.