The Threats Posed by Dredger Ships to the Environment and Measures Taken to Alleviate Them Dredger ships do carry out very important roles in preserving navigable burrs but such operations can negatively affect the environment Dredge operations are capable of causing the disruption of marine habitats in various ways, for example, through sediment displacement therefore making them a potential hazard to marine fauna and flora. The modern day dredger ships are however made with features that reduce such effects. To avert these effects, several measures are taken some of which include avoiding over dredging, dredging materials only as needed, and transporting dredged materials where it will have less effect. Such measures and more allow dredger ships to fully function with minimal impact to the surrounding environment.