To allow a worker to visually recognize information for assisting transportation of a transport object and the transport object at the same time. A guidance system includes a guidance device and a controller. The guidance device has a display portion. The controller stores information of a target position of a transport object. The controller calculates a detected position which is a current position of the transport object based on a detection result of a detection portion, and further calculates a position deviation which is a deviation of the detected position from a target position. The display portion displays information of the position deviation.

There is disclosed an excavation apparatus (5), such as an underwater excavation apparatus, having means for producing, in use, at least one vortex, spiral or turbulent flow in a laminar flow of fluid, e.g. water. The excavation apparatus (5) comprises a rotor (10) having a rotor rotation axis (A), wherein, in use, flow of fluid passed or across the rotor (10) is at a first angle (α) from the axis of rotation (A). The excavation apparatus (5) comprises the rotor (10) and means or an arrangement for dampening reactive torque on the apparatus (5) caused by rotation of the rotor (10), in use. The turbulent flow is provided within, such as within a (transverse) cross-section, of the laminar flow.

An apparatus for locating an elongate object in the seabed is disclosed. The apparatus comprises a body and a pair of jetting swords arranged on lateral sides of the elongate object to form a trench in the seabed. Chain cutters arranged on lateral sides of the elongate object cut respective parts of a trench in the seabed and are moveable relative to the body between a stowed position and a deployed position, independently of the jetting swords.

A system and method is provided for enhancing the working end of a hydrovac boom hose having a longitudinal axis and a perimeter disposed transversely to the axis, the working end configured to vacuum earthy material from a digsite along the axis. A plurality of high pressure nozzles are disposable in spaced relation along the perimeter of the working end, and configured to emit high pressure fluid towards the digsite to dislodge the earthy material. The nozzles are angularly actuatable to selectively emit the high pressure fluid along a range of angles relative to the longitudinal axis, and are rotationally actuatable to selectively emit the high pressure fluid from a range of locations along the perimeter of the working end. The angular and rotatable actuation is independent of movement of the working end and/or of movement of the hydrovac boom hose.

A pipe handling attachment for a working machine is configured to support a pipe and includes a mounting component configured to couple the pipe handling attachment to the working machine. A boom includes a first support arrangement for supporting a first portion of the pipe, and a second support arrangement, spaced apart from the first support arrangement, for supporting a second portion of the pipe. A distance between the first support arrangement and the second support arrangement is variable, and including adjusting mechanism configured to adjust the distance between the first support arrangement and the second support arrangement. The adjusting mechanism is configured to be operated manually.

A the installation plow connected to a mechanical arm of a vehicle to install a tile below a ground surface, the tile installation plow including a main body to be inserted at least partially within the ground surface, a boot removably disposed on at least a portion of an inner surface of the main body to direct the tile along a portion of the main body under the ground surface, and a tile cart connected to the vehicle to hold the tile thereon.

A the installation plow connected to a mechanical arm of a vehicle to install a tile below a ground surface, the tile installation plow including a main body to be inserted at least partially within the ground surface, a boot removably disposed on at least a portion of an inner surface of the main body to direct the tile along a portion of the main body under the ground surface, and a tile cart connected to the vehicle to hold the tile thereon.

A tile plow system, comprising a force sensor configured to detect an amount of tension on a conduit being fed through a tile plow, a system module in communication with the force sensor, and a display in communication with the system module. The system module comprises a processor and a memory. The tile plow system wherein the amount of tension on the conduit is compared to a threshold tension range, and wherein when the amount of tension of the conduit is outside of the threshold tension range corrective action is taken by the system.

A robotic vehicle for moving above ground while fabricating a subsurface polymer layer to protect an underground structure is provided. The robotic vehicle includes: a body; a rotational member that contacts the ground and moves the body over the ground; a ripper assembly having a proximal end that moves with the body, and a distal end that moves underground at a fabrication depth in response to the movement of the proximal end while fabricating the polymer layer; a ground penetrating radar (GPR) that locates and measures a depth of the underground structure below the ground; and a computerized control system that controls the rotational member, the distal end of the ripper assembly, and the GPR to move the body over the located underground structure while tracking the location of the underground structure and fabricating the polymer layer at the fabrication depth and above the measured depth of the underground structure.

A pipe laying plow (100), for operating by moving it forward while pipe (201) is fed therethrough to be laid at a pipe laying depth (D). The plow has a boom (15) held by an above-ground structure (16), and includes a substantially linear pipe feeding tube (3) defining a longitudinal axis (33) in a vertical plane; and a plurality of substantially identically shaped, planar blades (2) attached at regular intervals (BSp) along the tube; a blade length (BL) line intersecting the longitudinal axis (33) at an attachment angle (B), and blade width (BW) lines extending laterally perpendicular to the longitudinal vertical plane; wherein, when the boom is held in operating position, the tube (3) extends longitudinally downward and rearward at a boom angle (C) relative to ground level, and the blades extend lengthwise downward and forward at a plowing angle (A) relative to ground level.