ETA's tracked vehicles include trenchers and vehicles suitable for remote intervention tasks. Multiple tooling options are available and machines can be designed for versatility or tailored to specific operations.

Generally our track designs utilise standard components marinised for subsea duty. ETA have conducted research into track design, especially to quantify the soft soil performance of different systems, this has allowed us to optimise our use of these components. In addition a range of track plate designs can be offered.

The tracked vehicles are supplied with an easy to use control system. Depending upon the control functions required this can be an extension of the jetting sled control system or a more advanced PC based system.

A number of different burial tools can be fitted to the trenchers. These include jetters, vibro-ploughs, chain cutters and rock wheel cutters.


To discuss the suitability of an ETA tracked machine to your project please call us on:


Tracked Vehicles for Power and Telecoms Fields

Otter - Power & Telecoms

Otter provides an effective reliable solution for the burial of a range of cable types in water depths up to 30 m. The vehicle is based around a self-propelled track package with a universal linkage for deploying a range of burial tools.

Outline Specification;


Length overall

9.0m

Width

4.2m

Height

2.6m

Weight in Air

8.2t

Track width

1.1m

Burial Tools:


Max. diameter

180mm

Product MBR

1.5m

 

Jetting Tools:


Trench depth

2.2m

Soil type

sands and clays up to 25kPa

Chain Cutter:


Trench depth

2.2m

Soil type

sands and clays up to soft rock

 

Wheel Cutter:


Trench depth

0.8m

Soil type

sands, clays and rock

Track Package:


  • 1100mm nylon track shoes
  • Sealed and lubricated track chains
  • Carrier rollers, lower rollers and front idlers fitted with special seals and lubricant filled
  • Standard track drive reduction gear fitted with fixed displacement hydraulic motor

 

Control system housed in 3 x rugged transit cases and includes:

  • PC for graphical display of vehicle status
  • 2 x Monochrome monitors
  • Camera and light PSU's
  • Deployment ram controls
  • Slew ram controls
  • Mechanical cutter controls
  • Track drive controls
  • RS 232 survey data link
  • 1 x 150 m Electrical umbilical, extruded polyurethane jacket approx. 38 mm OD


The following sensors are fitted:

  • Burial depth
  • Pitch
  • Roll
  • Heading
  • Vertical and horizontal cable angle at bellmouth
  • Port and STBD track speed
  • Speed and distance over ground (5th Wheel)
  • Mechanical cutter speed
  • Mechanical cutter hydraulic pressure
  • Water depth

The following surveillance equipment is fitted:

  • 2 x mini monochrome CCD cameras
  • 2 x 24 VDC lights

Control modes:

  • Heading follow
  • Cable follow
  • Cable tracker follow
  • Equal demand and offset
  • Speed control to hydraulic pressure

Hydraulic System:

  • 350 HP surface diesel driven hydraulic power pack
  • Tool Deployment ram, subsea specification with spherical bearings both ends, fitted with ROTA linear transducer
  • Slew ram, subsea specification with spherical bearings both ends, fitted with ROTA linear transducer
  • Pressure, return and case drain filters
  • Subsea valve tank with 3 x proportional and 4 x Directional control valve

Umbilical:

  • 3 x 120 m hydraulic hose

LCSWT - Telecoms

The LCSWT is powered remotely from the surface by a diesel driven hydraulic power pack. A key aspect of its design is that the system is readily road transportable and can be rapidly mobilised at a work site.

Outline Specification;


Length overall (tool up)

7.0m

Width

2.8m

Height

1.6m

Weight in Air

3.5t

Standard track width

0.5m

Maximum track width

1.1m

Product MBR

1.5m

Product Diameter

10-150mm

Burial Tools:


Trench depth

2.2m

Max product diameter

180mm

Product MBR

1.5m

Soils type sands and clays up to

25kPa

Track Package:


  • 500 mm triple bar track shoes (alternative shoes/pads available)
  • Sealed and lubricated track chains
  • Carrier rollers, lower rollers and front idlers fitted with special seals and lubricant filled
  • Standard track drive reduction gear fitted with fixed disp. Hydraulic motor

 

Simple control system housed in a rugged transit case and includes:

  • HMI for graphical display of vehicle status
  • Camera and light PSU's
  • Deployment ram controls
  • Track drive controls
  • RS 232 survey data link
  • 1 x 150 m Electrical umbilical, extruded polyurethane jacket approx


The following sensors are fitted:

  • Burial depth
  • Pitch
  • Roll
  • Cable angle at bellmouth
  • Port and Starboard track speed

Control Modes

  • Cable follow
  • Equal demand and offset

Hydraulic System:

Tool Deployment ram, subsea specification with spherical bearings both ends, fitted with ROTA linear transducer.

  • Pressure, return and case drain filters
  • Subsea valve tank with 2 x proportional and 1 x Directional control valve

Umbilical:

  • 2 x 120 m hydraulic hose
  • 1 x 120 m hydraulic hose
  • 12 mm OD fitted top and bottom with subsea connectors