The main components of a TLP are the deck, hull, and mooring system. The deck supports accommodations, working area, processingequipment, derricks, cranes, pumps, the helideck, and
control room of the TLP. The hull consists of one or more hollow cylindrical caissons and horizontal pontoons.The hull houses bilge and ballast systems, drilling and potable water, diesel fuel, pumps, and machinery. Caissons and pontoons provide buoyancy for the hull, and caisson spacing influences platform motions response. The mooring system consists of thin walled, tubular steel tendons on each caisson. Foundations (tension piles, gravity base structures) anchor each tendon in place. The foundations, and subsequently the mooring, are permanent.
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