Cable burial typically takes place in notoriously harsh shallow water environments, that have high seabed drag and lift forces generated by strong currents and wave action. Traditional technologies have often struggled with such demanding conditions and this has led to project delays and increased costs.

The Hi-Traq® Jetter has been developed to tackle these shallow water environments and uses the successful ‘Royal IHC Hi-Traq® Multi Tool Trencher’ as its design foundation. The Hi-Traq® Jetter uses the same field proven Royal IHC patented 4 track under carriage system, which provides unparalleled performance over difficult terrain such as undulating sand waves and sloped seabeds.

The new Hi-Traq® Jetter provides 1200kW of power in a compact and light weight package. The vehicle weighs only 20Te and is capable of burring Ø450mm products into 3.3m trenches. The vehicle is built up in modules that can be rapidly taken apart and re-assembled allowing for shipping of the full vehicle in a single 40’ container.

Customer benefits

low cost mobilisation
designed to be shipped in containers
track driven system allows for Increased operational window
faster trenching in wider range of soils
greater flexibility in route planning due to large travel suspension and auto levelling system.

Key technical features

operates in high currents and waves
trenches tight radii found on 2nd ends
traverse steep sand waves and boulders
4 track ensures no sudden pitching over seabed terrain.

Specification

Base vehicle platform

Description	Specification
Dimensions	L4.5m x W3.5m x H2.75m
Weight in air	20Te
Installed power	1200kW total, 6kV VSD subsea direct drive waer pump
Max. seabed slope	±45° (roll and pitch) drive capability ±20° (roll and pitch) levelling capability for vertical trenching
Max. seabed step	0.3m
Min. water depth	5.0m (beachable with shore kit)

Automatic features

auto-heading landing orientation mode
auto-trench rate monitors & optimises tool trenching performance
traction control ensures smooth power transmission to tracks
auto levelling ensure trenching orientation and product grading is optimised.

Jetting package

Description	Specification
Configuration	Twin leg 1-3.3m depth jet legs
Jetting power	900kW at 16bar maximum pressure. Electrically driven pumps with variable speed drives used for optimal pump duty
Trench depth	1.0m - 3.3m
Jet leg separation	0.2m - 0.6m
Maximum product	Ø450mm
Minimum turning circle	10m on product
Depressor MBR	3.0m (does not have to be fitted)