Sea anchor
Modern commercial sea anchors are usually made of cloth, shaped like a parachute or cone, and rigged so that the wider end leads and the narrower end trails. When deployed, this type of sea anchor floats just under the surface, and the water moving past the sea anchor keeps it filled. Some varieties are cylindrical, with an adjustable opening in the rear that allows the amount of braking to be adjusted when deployed.
Offshore embedded anchors
Embedded anchors such as anchor piles (driven or drilled) are required for situations in which a large holding capacity is required. The design of anchor piles allows for three types of mooring configurations, vertical tethers, andcatenary and semi-taut/taut moorings, which allows for the mooring of different types of offshore structures, such as offshore wind turbines, FPSO, FLNG, etc. An industry example is the Ursa TLP which has been held on-station by 16 anchor piles of 2.4 m in diameter at 147 m long, weighing 380 tonnes each.