auxiliary equipment is generally not required.

they are smaller in size, easier to mobilise and manoeuvre.

In addition, water Injection dredging can provide clear advantages compared to other dredging techniques because: Portable water injection dredging vessels can be rapidly deployed to relatively remote sites when necessary. The working speed is 1 to 2 knots although most of them are able to sail faster in non-dredge mode. The dredging depth of water injection dredging vessels varies between 26 metres to almost 0 metres. The choice of a water injection dredging vessel is site-specific and will depend on various factors such as soil conditions, hydrodynamic conditions, transport distances and maximum operating depths.

For the regular maintenance of smaller harbours, the technology of water injection dredging can be effective. But not every operation requires major dredging equipment and for smaller ports the financial demands of dredging can become burdensome. Generally speaking the larger the port project, the more cost-efficient dredging becomes using traditional dredging techniques – trailing suction hopper dredgers and cutters. Since port authorities are continually confronted with the siltation of the harbours and access waterways channels, regular maintenance dredging is a necessity to ensure safe navigation depths in these. The mobilisation and capital costs of dredging plant are quite significant. Water injection dredging (WID) has very specific limitations but in the appropriate situation it also has very specific benefits. “Facts About Water Injection Dredging” describes a relatively new hydrodynamic dredging technique that is low-impact, economically viable and environmentally sound.

How does dredging work?