Abstract: An apparatus for forming a trench in a sea floor and/or displacing material on the sea floor is disclosed. The apparatus comprises a body and front skids mounted to the body for engaging the sea floor and supporting the body. The front skids are adjustable between a first mode, in which the front skids engage the sea floor, and a second mode, in which the front skids engage the sea floor adjacent the trench and at the trench walls.

Abstract: A ditching apparatus features front blade sections fixed to the frame in a V-configuration, and a pull tongue extending over the blade apex to a pivotal connection near a rear of the frame. An actuation mechanism effects relative pivoting between the frame and the pull tongue to adjust an angle between the front blade and the trailer tongue to control a ground-penetration depth of the blade apex. Two rear blade sections on opposing sides of the frame are movable between deployed positions extending rearwardly and laterally outward from the front blade sections, and stowed positions elevated out of the deployed positions. The blade angle and width are thus controllable to achieve a desired depth and width of ditch. A nose cap at the blade apex provides an improved ground breaking action, while internally braced blade structures will roll formed skins provide durability and smooth rolling action of displaced earth.

Abstract: An earth shaping apparatus allows a ditch to be excavated and the surrounding area leveled in a single pass. The earth shaping apparatus has a leveling blade with an elongated lower contacting edge that is adapted to be moved in a ditching direction. The lower contacting edge is arranged at an angle to the ditching direction. The earth shaping apparatus further has a ditching blade coupled to the earth shaping apparatus in front of the leveling blade with respect to the ditching direction. The ditching blade has a contacting edge extending below the lower contacting edge of the leveling blade when in use.