Contact

CSL-OWL’s Subsea Rock Installation Vessels

  • Purpose-Built
  • DP2
  • 21,000 DWT
  • MGO & Methanol

Our subsea rock installation vessels feature a cargo capacity of 17,500 metric tonnes, dynamic positioning (DP2), and the ability to operate on marine gas oil (MGO) and/or methanol, providing a pathway to zero-emission operations. Purpose-built for optimal flexibility, our vessels will deliver efficient and cost-effective subsea rock installation services in water depths up to 100 meters.

Currently under construction, the first vessel is expected to begin operations in mid-December 2026, with the second to follow in beginning February 2027.

Vessel Features

Our vessels combine advanced technology with operational flexibility to deliver highly efficient, cost-effective and seamless subsea rock installation.

  • High-Accuracy Rock Installation
    Capable of installing rock material up to the 60/300 kg grading (heaviest rock weighing up to 450 kg).
  • Installation Depth and Methods
    A Tremie Pipe with active motion compensation ensures precise placement of rock material at any water depth up to 100 metres.
  • Cargo Hold Flexibility
    The cargo holds can accommodate various rock gradings.
  • Transport Belt Capacity
    Transport belts are designed to handle rocks weighing up to 1,500 kg.
  • Larger Armour Gradings
    A side chute can be used to install larger armour gradings.
  • Optional Larger Rock Installation
    Excavators can be used to handle larger rocks, up to 10 tonnes.

Vessel Specifications

Technical Details

  • Flag : The Netherlands
  • Class : Bureau Veritas
  • Length Overall : 166.80 metres
  • Breadth, Molded : 40.00 metres
  • Design Draft, Molded : 5.50 metres
  • Deadweight : Approximately 21,000 tonnes
  • Accommodation : 45 POB can temporarily be increased to 60 via TLQ

Performance and Efficiency

  • Maximum Sailing Speed : 12 knots
  • Economical Speed : 10 knots
  • Fuel Flexibility : operates on MGO and/or Methanol
  • Dynamic Positioning 2 (DP2) : Equipped with Differential Global Positioning System, (DGPS), High Precision Acoustic Positioning (HIPAP), and laser-based positioning sensors (Fanbeam)

Rock Installation Capabilities

  • Rock Carrying Capacity : 17,500 tonnes
  • Maximum Installation Rate : 2,000 tonnes per hour
  • Maximum Installation Depth : 100 metres
Download our SRI vessel specifications

Download our SRI vessel specifications

To download the specs, kindly provide your contact information.