Description
Length of pipe extending vertically downwards from an installation into the sea as a means of disposing of waste waters, or for the location of a seawater pump OR one of several columns made of steel or concrete,which serves as the foundation for a rigid offshore platform rig, such as the concrete gravity platform rig OR a steel or concrete chamber that surrounds equipment below the waterline of an arctic submersible rig, thereby protecting the equipment from damage by moving ice.
Source :
Alpha Thames Ltd 2004