Frond Matt

Subcon has custom designed its frond mattress specifically for the North West Shelf of Western Australia. Using UV stabilised 200 Denier Woven PP for the base mattress allow longer 1.2m fronds to be used to improve the reduction in velocity of current particles allow for quicker burial of surrounding subsea assets.


 Materials/Dimensions Value
 Material Polyurethane Fronds
 Density of Fronds 0.8 SG (Floating in seawater)
 Length of Fronds 1200mm
 Length 4.0m
 Width 4.5m
 Thickness of PP 2mm

The fronds can be attached to concrete mattresses, grout bags, grout inflated fabric formworks or anchored using duckbill anchors.  The fronds are secured for installation with a Velcro cover complete with buoyant monkey fist and a bridle for deployment.  In this way the matts can be safely installed by ROV or divers.

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