Remotelyoperated Vehicles

Remotely-operated vehicles (ROVs) are robots that can be used to support inspection, survey, and light work tasks underwater. They provide deep and long duration dive capabilities in hazardous water conditions with minimal risk to personnel. ROVs can also supplement manned diving operations by performing support tasks before, during, and after the divers are deployed. Overall ROV operations require less personnel and support equipment than do manned diving operations.

Performance capabilities and designs of ROVs vary widely and, except for vehicles originating from the same manufacturer, there is little similarity from vehicle to vehicle. Available ROVs range from light weight, "eyeball" or inspection only, to 10-ton heavy work systems that are capable of diving to 20,000-foot depths.

The four basic types of ROVs are:

• Tethered, Free-Swimming

• Tethered, Bottom-Crawling

• Untethered

A wide assortment of instruments and tools can be attached to ROVs. The number and type of auxiliary hardware that a vehicle can accommodate depends on the payload (size and weight), power, and spare wires available in the umbilical.

The UCTs have two tethered, free-swimming type ROV systems available for mission support. Both can be further classified as professional inspection and light work systems. These are:

• PHANTOM DHD2+2, Figure 2-47 (Deep Ocean Engineering)

Remotely Operated Underwater Vehicles

Figure 2-47. Phantom DHD2 vehicle system's primary components. (Printed with permission from Deep Ocean Engineering.)

Figure 2-47. Phantom DHD2 vehicle system's primary components. (Printed with permission from Deep Ocean Engineering.)

Underwater Construction
MiniROVER* MKII Vehicle

Control Console Remote Hand Controller

Figure 2-46. MiniROVER* MKII system components. (Printed with permission from Benthos.)

2.9.1 Description and Comparison of UCT ROV Systems

Table 2-21 summarizes specifications for the UCT MiniROVER* and PHANTOM vehicle systems. Table 2-22 provides a summary of the shipping requirements for the vehicles.

Both vehicles are capable of supporting tasks in temperate, tropic, and arctic environments. Hie basic system consists of:

• Vehicle with camera, lamps, thrust-ers, fluxgate compass, depth gauge, and ballast/flotation

• Control console

• Viewing monitor

• Power transformer

• Umbilical cable

Optional equipment can include a:

• Hand-powered umbilical winch with electrical slipring

• Video recorder

• Manipulator

• On-screen depth and heading display computer

• Umbilical junction box

• Various mission specific auxiliary hardware.

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