ditch digger is the apparatus used on the machine to cut a ditch in the bottom of a body of water so that a pipeline can be buried or cable etc it is powered by a hydraulic motor and gear reduction drive by chain or shaft the ditch digger blades are housed in a funnel opened on the forward end and an eight inch suction pump on the other the pump serves two purposes 1 to suck the mud and debris that the blades cut and extract them to the rear of the machine which causes also a compulsion force to help power the machine forward 2 the blades have shaft through the center a sprocket is positioned in the middle of the shaft which is connected to the gear drive the blades are made in two sections allowing a gap of approximately two inches between them for the driving chain or shaft the chain has a coin guard built around it with seals in the shaft to keep the mud off the chain and sprockets the blades are attached to the funnel by self sealed flange bearing also there are two hydraulic cylinders attached to the funnel from the frame to dig a deeper ditch the cylinders are extended and the funnel rotates on a shaft on the bottom rear of the funnel and is exerted downward to the required depth of the.