Floating dock (jetty)
From Infogalactic: the planetary knowledge core
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Floating dock at Mohonk Mountain House
A floating dock at a private marina. The large vertical pole in the foreground is used to keep the dock in position and allows the dock to freely rise and fall with the tide.
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.
Frequently used in marinas, this type of pier maintains a fixed vertical relationship to watercraft secured to it, independent of tidal, river or lake elevation.
