Mooring line snapback protection barrier
High-tensile steel mesh barriers against the recoil of a mooring line that parts on the quay: permanent, work area, mobile, rigid and ship-side versions. Geobrugg carried out full-scale tests with Holmes Solutions.
The problem
A mooring line that parts under load while a ship is being moored whips across the quay and deck at great speed with the energy stored at the moment of parting (snapback). The event is not triggered by a single cause but by several factors coming together; with growing ship sizes and extreme weather events the risk is increasing. Because the mooring operation limits access during maintenance, work stoppages also last longer.
The solution
Geobrugg has developed high-tensile steel mesh barriers as an additional safety measure alongside the guidelines for towing and mooring equipment. Full-scale tests were carried out with Holmes Solutions; the behaviour of the parting line was measured and the barrier designed accordingly. As Geobrugg's representative in Türkiye, Artusa takes on the survey, system selection, installation and acceptance.
| Version | Use |
|---|---|
| Permanent protection system | Large areas and single-purpose terminals |
| Work area protection system | Temporary maintenance work |
| Mobile protection system | Multi-purpose terminals; can be relocated |
| Rigid protection system | Fitted onto existing structures |
| Ship-side protection system | Protects the crew on deck |
What is measured during the survey
Quay geometry and bollard positions, the line type used and its working load, mooring angles and the snapback zone, the areas where personnel stand and pass, options for connecting to existing structures. The system is chosen from these measurements; where the barrier line runs is set by the drawing of the snapback zone.
For other high-tensile mesh applications at defence and industrial facilities, the security fencing (Turkish) page. For a quotation, contact.
Source: Geobrugg AG, snapback protection solutions product information.