Types of dredger

Introduction

Dredgers may be broadly classified into two main groups or types depending upon the method used to transport loosened material from the sea-bed to the water surface. These are :

- Mechanical dredgers;
- Hydraulic dredgers.

Not all dredgers fall neatly into these classifications so it is convenient to include a third, which can best be described as ‘other types’. These dredgers are usually small, sometimes unique, and normally intended for quite specific extraction or relocation situations.