Mooring Compensators

Protect your boat with our mooring compensators

Superior mooring protection. Diminishes the strain of wind, waves and wake. Keeps lines from snapping and prevents cleats from pulling out. No squeaking, no wear, no tear! Powerful forces come into play when wind starts to blow. And it is not only the wind that gives rise to disastrous stresses and strains. The swells resulting from passing boats can cause a lot of trouble. High and low tide are factors that must also be considered, especially on coasts where the difference in the heights of tide can be up to 2 meters.

With mooring compensators from Sigma you can feel completely at ease in regard to your moorings. One on each line! There is a feeling of security when you leave your boat in your local marine knowing it is mooring with Sigma mooring compensators. But remember that our mooring compensators also ensure that your visit to other marinas and harbors will be safer and more enjoyable. The cost of these reliable mooring compensators which are dependable in all types of weather is small in relation to the money at risk if you have inadequate moorings. Sigma offers two alternatives for safe mooring; the well renowned FORSHEDA compensator as well as the Mini Snubber, the latest addition to our range of mooring compensators. Both alternatives are made of high quality ozone resistant EPDM rubber and renders an absolutely safe and long-lasting mooring for all types of boats and yachts.


Compensating movement and force

The table below gives the maximum movement in mm for different numbers of turns and the force which the compensator takes up when a line which is wound three times around the compensator is straightened out completely.
More than three turns permits such a large compensating movement that the life of the compensator can be greatly shortened.

1 Turn

The extension of the compensator can be varied by changing the number of times the line is wound around it. The more turns, the further the compensator can extend.

2 Turn

You can set the extension you want. In narrow mooring places, e-g- between Y booms, one or two turns is usually right.

3 Turn

In exposed moorings, you should wind the line three times. You  might also consider going up one size in mooring line diameter and compensator.


First determine what line thickness you need on the basis of the size of the boat and situation of the moorage. For secure mooring, we recommend a three-stranded line of synthetic material.
In choosing the proper line thickness, the examples in the table may serve as a guide. (Recommendations of Swedish boat insurance companies.)

Mini snubber

The mini-snubber is the little sister in the mooring compensator family, suitable for smaller sailing dinghys and rowboats with outboard motors. Fits on mooring lines with diameter 10-12 mm.

Quick facts

  • 4 production sites
  • 30 M€ in annual sales
  • 230 employees