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Side-Stone Dumping Vessel

E4. Cruise, offshore energy and auxiliary/specialised fleets

Definition

Side-discharge rock placement vessel.

A side-stone dumping vessel places rock on the seabed by discharging it over the vessel’s side, used where broad coverage matters more than pinpoint accuracy: shore approaches, breakwater and bund cores, and shallow-water pipeline and cable cover. Lacking the controlled flexible fall pipe of a fall-pipe vessel, it gives a wider, less precise footprint and is limited to shallower depths because the rock plume spreads with depth and current. The choice between side-dumping and fall-pipe placement is driven by required accuracy, water depth, and proximity to sensitive subsea assets.

Source: Marine rock-placement practice; coverage method selection per project burial/protection specification (DNV-RP-F107).