A dredger is a type of equipment used to remove sediment and debris from the bottom of bodies of water, such as rivers, lakes, and harbors. This process, known as dredging, helps maintain navigable waterways, supports construction projects, and can improve aquatic habitats. Dredgers come in various forms, including mechanical and hydraulic types, each designed for specific tasks. Dredging is often essential for maintaining shipping channels, allowing larger vessels to pass safely. Additionally, dredgers can be used to extract valuable materials like sand and gravel, which are important for construction. The operation of dredgers is typically regulated to minimize environmental impact and protect ecosystems.