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Douglas Marine Master Mooring 20 Device
Douglas Marine Master Mooring 20 Device

Ultimate Mooring Spring Shock Absorption

Marine Grade Stainless Steel

Specially engineered elastomers (rubber inserts)

Douglas Marine Rated Break Load and Elasticity

Suitable for stern to mooring


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Douglas Marine

Manufactured in Italy from marine grade stainless steel HR and specially designed elastomers (rubber inserts that provide the shock absorption)

Master Mooring Device 20 Plus Factors:

Balanced load bearing capacity

High load bearing shackle end connectors.

Rated Manufacturer Break Load.

Rated Manufacturer Elasticity.

Sizes 1, 2 and 3 have the same break load but the shore hardness of the elastomer is different to create the right degee of elasticity for the weight of yacht.

Douglas Marine publish a manufacturer minimum break load for reassurance:

Douglas Reference 806-0020 806-0021 806-0022
Osculati Reference OSC-0120801 OSC-0120802 OSC-0120803
Yacht Displacement 17-25 tonnes 25-35 tonnes 35-45 tonnes
Elasticity 1400kg 1600kg 2300kg
Stroke 90mm 90mm 90mm
Douglas Break Load 27000kg 27000kg 27000kg

Jimmy Green Rigging Team Advisory

  1. Attach a slack warp alongside the spring as a security measure.
  2. Deploy a second, independent mooring line for reassurance.

These precautions are especially important when the yacht is left unattended for long periods.