Leask Marine understand that landfall pull-in operations are about safely and efficiently transitioning the subsea cable from sea to shore, typically via a pre-installed duct, ensuring both protection of the cable and minimal environmental impact.
Leask Marine has extensive experience in all aspects of cable landfall pull-in operations, the critical stage of bringing a subsea power or telecom cable from the offshore installation vessel to its designated landfall point onshore. This operation is vital in offshore wind, interconnector, tidal, and telecom projects, as it establishes the essential link between offshore infrastructure (e.g., wind farms, tidal arrays, interconnectors) and the onshore grid or communications network.
Key Challenges and Our Expertise
At Leask Marine, we provide a true one-stop-shop service for cable landfall operations, drawing on in-house expertise and resources to manage every stage of the process. We understand the unique challenges of this demanding nearshore environment, including:
- Shallow water and surf zone access – with vessels restricted from operating close to shore.
- Environmental considerations – managing operations within sensitive coastal habitats and under tight tidal windows.
- Cable integrity – ensuring cables are protected throughout, avoiding overstress, kinks, or excessive bending during pull-in.
These challenges require seamless coordination between our marine crews, onshore civil teams, dive teams, and HDD & cable contractors. By integrating all these capabilities under one roof, Leask Marine delivers safe, efficient, and reliable cable pull-in operations that meet the highest technical and environmental standards.
Our Cable Landfall Pull-In Process
At Leask Marine, we provide a true one-stop-shop service for cable landfall operations, drawing on in-house expertise and resources to manage every stage of the process. We understand the unique challenges of this demanding nearshore environment, including:
1 – Pre-installation Preparation
Onshore ducting or HDD works are prepared and messenger lines installed to guide the cable to its final landfall position.
2 – Vessel Positioning Offshore
The installation vessel is precisely positioned at the duct exit point, ready for cable transfer. Where required, the cable can be safely transferred across the deck of a Leask Marine Multicat, providing a stable and versatile working platform to support the pull-in operation.
3 – Cable Connection & Pull-In
Our dive teams and ROVs recover the messenger wire and connect it to the cable pulling head.
Controlled winching from shore draws the cable smoothly through the duct, with real-time monitoring to maintain correct tension and bend radius.
4 – Securing & Termination
Once ashore, the cable is secured and sealed at the duct entry and positioned in the onshore joint bay for connection.
5 – Final Protection Works
Offshore, the cable is temporarily laid on the seabed before trenching or burial operations are completed. Where required, additional stabilisation measures such as rock pinning, rock bagging, or concrete mattress installation are carried out to ensure long-term protection. Once these works are completed, the full system is handed over ready for commissioning.
