Optimizing cable installations

SUBSEA TRENCHER

Innovative and reliable

SOLUTION FOR SUBSEA OPERATIONS

The trencher is equipped with a comprehensive suite of subsea assets designed to effectively detect and manage cable systems. These include:

PLC control system: Oversees the surface hydraulic power pack and subsea valve pack, ensuring precise operational control.
BlueView 90-130 sonar: Provides high-resolution imaging for underwater inspection.
TSS cable tracker: Accurate cable detection and tracking.
Coda Octopus 3D sonar: Advanced 3D imaging capabilities for detailed underwater mapping.
iXblue subsea gyro: With a Doppler Velocity Log (DVL) for enhanced navigational accuracy.
HD IP cameras: Clear visual monitoring of underwater activities.
8 LED lights: Each with a luminosity of 2500 l., ensuring optimal visibility in low-light conditions.
Depth sensor: Accurate measuring the depth of the trencher’s operations.
Hydraulic sensor: Monitor and regulate hydraulic system performance.
Sword pressure and flow sensors: Ensure the trencher operates within safe and efficient parameters.
Sword inclinometer and a TSS frame inclinometer: To precisely measure the angles and orientation of the trencher, enhancing operational accuracy and safety.

Together, these components provide a robust and reliable solution for subsea cable detection and management, ensuring high efficiency and precision in underwater operations.

Single sword jetting system

FOR CABLE BURIAL

Our single sword jetting system is engineered for unparalleled efficiency and safety in cable burial operations. Whether dealing with surface-laid cables or cables that are self-buried or partially buried, our system ensures secure burial without the risk of damaging the cable.

The system reduces the risk of gathering and pushing slack cable ahead of the jetting system thus reducing risk of infringing the minimum bending radius.

The system stands out for its precision, efficiency, and adaptability, making it the ideal choice for secure and reliable cable burial in various marine environments.

Key benefits

Surface and sub-surface capability
Minimized cable stress
Precise and efficient operation
Versatile burying capability
Advanced monitoring
Customizable sword design

Benefits of using a

SINGLE SWORD JETTING SYSTEM

Working on surface laid cable, even cables self-buried or partly buried can be buried with no risk of harming the cable. DKM have 20 various sword designs inhouse.
No feeding system for the cable while trenching compared to a cable plough or ROV cutter. This provides the single sword jetting method with a wide range of possibilities and advantages such as trenching on live cables, burial of cable ends, omegas, loops, and joints etc.
T124 are fitted with high-definition video, sonar, and cable tracker instruments for product monitoring during burial.
Reduces the risk of gathering and pushing slack cable ahead of the jetting system thus reducing risk of infringing the minimum bending radius.
Repeated passes are possible with a jetting system.
Can be recovered from the cable in a matter of minutes.
Works safely within a few meters of the offshore structures.
Can bury cables laid in relatively small radius curves.
No special requirements for the cable route. As a standard DKM designs all routes including 1- 2 % slack in order to safeguard that no tension is applied to the cable during trenching/burial.

DKM´s preferred sword system T20 can deliver 14 bar at the cutting nuzzles, with a flow of 880m3/h. The vehicle has 820 hp in total.