Swing moorings are the simplest and most common kind of mooring. A swing mooring consists of a single anchor/mooring block (concrete or steel) located on the seabed with a rope, cable or chain making up a mooring line running to a float on the surface; a vessel attached to this kind of mooring swings in a circle according to the direction of wind or tide.
Elastic Mooring Line – General
Elastic Moorings utilise elastic rope, capable of stretching up to 100% of it’s length and return to normal length again. This allows a vessel or pontoon attached to the elastic mooring line to be held in closer proximity to it’s anchoring point on the seabed, thus considerably reducing swing area and maintenance costs. An Elastic mooring line holds the object it anchors in a tighter arc of travel, resulting in the mooring line being suspended clear of the seabed, which has the effect of considerably reducing the risk of environmental damage.
There are several different types of Elastic Mooring Lines available on the market e.g. Seaflex, Hazellet, Marine-flex.
The additional weight of a Chain Mooring system acts as a damper to reduce the wave/tidal forces applied through the mooring line to the anchor. The swing area of a chain mooring is greater than that of an elastic mooring e.g. Seaflex.