Aqua-Terra Jet Sled

Jetting Sled

This is a subsea jetting sled operational since 1984, modified and redesigned for the trenching of submarine utility cables. It is capable of jetting or mechanically trenching cables to a burial depth of approximately 2 meters and can be operated in subsea water depths of 50 meters. It has an optional 3 meter burial injector tool with a hydraulic trencher. The sled can also provide a complete navigation package with personnel including real time burial depth, pitch and roll interface with GPS at survey grade accuracy with as-built. It can provide a complete containerized operational cable management system with control room, winch, motorized cable reels, heave tensioners, jet pumps, tension-meters including a LARS (a launch & recovery system).

The system has an Hydraulically Articulated Cable Injector that can adapt to different depth, length and width of power or Fiber Optic Cables including the option of a Hydraulic and mechanical trencher attachment for non-fluidized soil such as clay, cobbles or corrals.

The Hydraulic Reel System 12'x12'x12' can carry over 20 Kilometres of 1" Cable or 6,000' of 4" wire. It is totally self-contained with Hydraulic control for the Jet Sled and has small Hydraulic Winches for holding the Jet Sled in position under water. The minimal deck space required is 14' wide x 40' long.

Specification of the Jetting Sled

  • Length 6.0 Meters
  • Width 4.5 Meters (assemble)
  • Dry Weight 5.5 Tonnes
  • Max Operating Depth 50 Meters
  • Max Trenching Depth 3 Meters
  • Max Trenching Speed 7.5 Meters/Per Minute (soil conditions favourable)
  • Max Jetting Speed 12.5 Meters/Per Minute (soil condition favourable)
  • Net Buoyancy Floats in 1 Meter of Water
  • Water Pumps 1 or 2 Depending on Soil Condition
  • Max Ben Radius 1.9 Meters (can be modified)
Modifications can be made to the sled.
A/T- 1 is a multi- purpose portable tow jet sled used to support the embedment of various subsea cables with specialized injectors on the jet sled as required to complete various projects.
  • A/T- 1 primary used is to complete shore end projects and shallow water cable installations or platform to platform.
    In water depth(0 to 150’ feet )
  • Aqua-Terra is constantly in R&D, it has proven itself to be a reliable and efficient system for many different sub-bottom conditions
  • A.T. 1 - Main Specifications
  • Length 19.6’ 7.62 Meters
  • Width 5’ 15 feet 3.35 Meters
  • Height 8’ 5 feet 1.60 Meters
  • Weight in air 18,400 LBS 8,346.1 kg
  • Burial depth options
  • Jet assisted injector 1 4.92 feet 1.5 Meters 45 *
  • Jet assisted injector 2 6.56 feet. 2 Meters 45 *
  • Jet assisted injector 3 9.84 feet. 3 Meters 45 *
  • Jet assisted injector with hydraulic trencher 2 Meters 45 *
    Jet pump pressure requirements minimum, 1,500 GPM@ 175 psi
  • Hydraulic pressure for injector cylinder, 3,000 PSI biodegradable oil.
  • Telemetry: Burial depth, pitch/roll, interface GPS positioning
  • Buoyancy compensated
  • Optional 6” Injector cable larger than 4” cables.



JET TRENCHER / JET SLED

Operates as self propelled by the resultant jet reaction force or as a light weight towed sled dependent on operational factors. Equipped with three sets of exchangeable burial tools for 1mt, 1.5mt, 2mt Burial Depth (Numerous of jetting injectors from 12mm to 24 mm determined by soil type).