Hydraulic dredgers usually use suction to remove material such as sand, silt, even gravel, from the seabed. Self-propelled dredgers can be driven (using their own power) across waterways.

Portable dredgers can move, but not by their own power. Stationary dredgers stand on columns (called spuds) and need to be constructed in place. The other category is hydraulic, which is also called suction.ĭredgers are either stationary, portable, or self-propelled. Almost all dredgers fall into either the category of mechanical, which is sometimes called bucket. There are three classifications of dredgers: mechanical, hydraulic, and other. Names for types of dredgers reflect either the design, the application of the machine, or the material being manipulated.

lowering the bed level (for safer navigation by boats or to allow for larger vessels)ĭredgers come in a variety of sizes and types.

Dredgers are watercraft that remove and relocate the contents (sand, sediment, mud, etc.) from the bottom of a body of water.Īn area is dredged for various reasons, including: Have you ever wondered how people carve out and remove material from the seafloor? The big answer comes in the form of a powerful machine.

What is a dredging knife