Concrete Mattresses & Moulds

Concrete mattresses provide a recognised engineering solution for several of the challenges faced 

in subsea pipeline construction, umbilical deployment and seabed and soil protection/stabilisation. 

They are cost effective and may be readily deployed using standard handling systems.

Typically, concrete mattresses may be used to provide :

• Protection from dropped objects

• Added weight and stabilisation

• Protection from Trawl Boards

• Scour prevention

• Crossover support and separation for pipelines and umbilicals

• Supports or foundations for other subsea activities

• Riverbank erosion control

WT manufacture a range of standard mattresses, but will also design and manufacture mattresses 

to a client’s specific requirement. Quality and safety are the key issues in all WT designs and 

appropriate safety factors are applied to address lifting and handling in an offshore environment.