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Wood pilings grouped into a pair of dolphins serving as a protected entryway to a boat basin. A dolphin is a group of pilings arrayed together to serve variously as a protective hardpoint along a dock, in a waterway, or along a shore; as a means or point of stabilization of a dock, bridge, or similar structure; as a mooring point; and as a base for navigational aids.
The basic rode system is a line, cable, or chain several times longer than the depth of the water running from the anchor to the mooring buoy, the longer the rode is the shallower the angle of force on the anchor (it has more scope). A shallower scope means more of the force is pulling horizontally so that ploughing into the substrate adds ...
Timber pilings. Timber pilings serve as the foundations of many historic structures such as canneries, wharves, and shore buildings. The old pilings present challenging problems during restoration as they age and are destroyed by organisms and decay. Replacing the foundation entirely is possible but expensive.
A floating dock, floating pier or floating jetty is a platform or ramp supported by pontoons. It is usually joined to the shore with a gangway. The pier is usually held in place by vertical poles referred to as pilings, which are embedded in the seafloor or by anchored cables. [1] Frequently used in marinas, this type of pier maintains a fixed ...
Nearby, much taller pilings mark the remains of a ferry landing. In 1927, a ferry was taking travelers to Wollochet Bay, according to an ad in The News Tribune.
Schematic cross section of a pressurized caisson. In geotechnical engineering, a caisson (/ ˈ k eɪ s ən,-s ɒ n /; borrowed from French caisson 'box', from Italian cassone 'large box', an augmentative of cassa) is a watertight retaining structure [1] used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, [2] or for the repair of ships.
Wharf under construction on the Upper Mississippi in Fountain City, Wisconsin [ 1] A wharf ( pl. wharves or wharfs ), quay ( / kiː / kee, also / keɪ, kweɪ / k (w)ay[ 2] ), staith, or staithe is a structure on the shore of a harbour or on the bank of a river or canal where ships may dock to load and unload cargo or passengers. [ 3][ 4] Such a ...
The shipworms, also called Teredo worms or simply Teredo (from Ancient Greek τερηδών (terēdṓn) 'wood-worm', via Latin terēdō ), are marine bivalve molluscs in the family Teredinidae, a group of saltwater clams with long, soft, naked bodies.