Lagoon dredge

This type of dredge was designed to clean the beds of lagoon canals and locks. It was assembled on two boats and equipped with four revolving paddles, operated by winches. The caissons "portatrici di terra del pantano" (made to carry earth and mud) were shaped so as to allow the mud to drop onto a barge moored between the two boats. The dredging depth was adjusted by the vertical movement of the cylinder to which the paddles were connected. An interesting point is the progression of the dredge by means of the mooring cable. While the wheel turns and dredges the mud, a rope moored on the shore winds around the cylinder shaft and moves the dredge to another site.