Trailer suction dredgers are specialized vessels used for underwater excavation. They work by sucking up sediment and debris from the seabed through a large pipe, which is connected to a dredging pump. This process helps maintain navigable waterways, remove silt, and support construction projects. These dredgers are often towed by a tugboat and can operate in various water depths. The material collected is typically deposited onto a barge or directly onto the shore. Their versatility makes them essential for harbor maintenance, land reclamation, and environmental restoration efforts.