Rocksteady Mooring Connector

Rocksteady is an auto-latching subsea structural connector, featuring a separate ROV operated lock for reliable long term performance.

The ROV locking mechanism is derived from collet connectors (used in wellheads, trees and flowlines), transferring the load to forged load shoulders and generating a high clamping force (or preload) in the mating parts. The preload is what gives the Rocksteady subsea mooring connector unparalleled fatigue performance and the unique capability to accommodate bending, tension, shear and torsion loads.

Rocksteady is available in ABS and DNV qualified specifications from 900t to 3,000t MBL and with a range of ROV tooling options. The connector can also be supplied to suit a variety of interfaces including chain, shackles, rope sockets, articulating bearings and pipe weld necks.

We work closely with our sister company InterMoor for our mooring projects.


  • MODU connection to prelaid moorings.
  • Subsea connections in permanently moored rigs and FPSOs.
  • Hybrid riser tower pile and buoyancy can connections.
  • Structural pile connections, including wind and wave power applications.


  • Easy to install. Rocksteady’s automatic latch, large guide funnel and 25° installation angle means you connect in rough seas.
  • Cheaper to operate. Standard ROV torque tooling reduces make-up time and keeps the ROV in the water.
  • Quicker to deliver. The simple design means less machining and shorter lead times.