The seabed goes through a lot of time affected by objective factors such as thunderstorms, floods, seasonal sedimentation, causing a large amount of sludge in the form of silt, sand, a material sediment of the sea, etc. to accumulate day by day. The accretion situation is due to topographical features, tidal regime, wave regime, coastal currents, sand transportation, etc; which impacts on the environment, ecosystems, aquaculture areas, affects waterway navigation activities of ships, causes great damage to economy and labor safety. At that time, it is very necessary to perform canal dredging. All canal dredging is for the purpose of clearing the stream, helping the channel to ensure its depth, to facilitate the movement of ships, at the same time, it also makes full use of products from dredging such as sand, stone, gravel, etc. to serve the growing construction demand.
The process of dredging at sea is necessary and necessary. Not only the waters of Vietnam but also countries around the world have to carry out this activity to create favorable conditions for navigation. However, this private enterprise dares to invest capital, which means facing many challenges and difficulties.