Jack-up Barges, Self-elevating Platforms, Lift boats & Spud pontoons

Jack-up Barges, Self-elevating Platforms, Lift boats & Spud pontoons are a type of mobile unit that consists of a rectangular hull fitted with usually three to four, round or square legs, capable of raising its hull over the surface of the sea. Jacking or lifting takes place by rack & pinion, hydraulic cylinders or wires. The hull enables towing of the unit and to a desired location. Once on location the hull is raised to the required elevation above the sea surface supported by the sea bed. The legs of these units require a sea bead surface which prevents the legs to sink into it, whereby some may be designed to slightly penetrate the sea bed or may be fitted with enlarged sections or footings. Except for the larger types, generally Jack-up Barges and Self-elevating platforms are not self-propelled and manoeuvre on site by means of of mooring quipment consisting of a four winches with long wires and anchors. Over long(er) distances transport takes place with tugs dedicated barges for transportation or with semi submersible / heavy lift ships. Jack-up Barges, self elevating platforms, lift boats and spud pontoons are used for all kinds of stationary marine construction, drilling, salvage and even well intervention, all in relative shallow waters.