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Other Offshore Structures

Mudmats are typically used when the sea floor is too soft to adequately support the equipment. Our aluminium alloy mudmats are designed to effectively distribute the load and stress of the equipment on the seabed and at the same time, strong enough to hold its weight.

Aluminium Alloy Mudmats

BSP Mudmats | Osprey 2013


  • Environment friendly material. Alternative to using timber or steel
  • Extremely quick installation via fasteners
  • Cost effective and competitive against both steel and timber
  • Low weight of only about 40kg/msq leading to easier handling and shipping
  • Positive buoyancy

Technical Information

  • Conventional hardwood timber used for mudmats comes from mature trees with a long growing cycle, situated in primary forests. Severe deforestation and environmental damages are frequent by-products of harvesting this timber. Timber mudmats are typically about 900kg/m3 in density. For a desired timber thickness of 100mm, that works out to a weight of about 90kg per square metre.
  • Our aluminium alloy mudmats weigh about a third of this weight.
  • Timber mudmats result in negative buoyant weights as timber is less dense than water. Negative buoyancy causes uplift forces at the bottom of the jacket when the jacket structure is being lowered to the seabed.
  • Aluminium mudmats result in a positive buoyant weight and thus does not cause any uplift, in reality giving more weight when the jacket structure is being lowered to the seabed
  • Installation of aluminium mudmats is very quick. NO welding is involved and only fasteners and a unique locking mechanism used
  • Aluminium mudmats are generally supplied in long lengths upto 12m. Widths are typically 500mm and the sections joined together mechanically. Securing to steel is via fasteners and U-bolts
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