Page 48: of Marine Technology Magazine (September 2015)

Case Study (Photo Credit: Bjarte Langeland / Stinger)

Two of Stinger’s VideoRay Pro 4 ROVs.

potential issues, conduct necessary repairs, and replace any eoRay Pro 4 Cockpit control software includes several health damaged or consumable parts. In lieu of standard procedures, status monitors that detect and alert the pilot to any internal

Stinger developed new methods of maintaining the system malfunctions, such as leaks, overheating, or lost communica- without surfacing. The resident ROV was housed in a crate tions. Cockpit also features an extensive interactive engine on the sea? oor, which helped reduce the amount of biofoul- room where pilots can monitor the status of the thrusters, ing that the ROV might experience through natural wear and power supply and compass calibration. Other Cockpit fea- tear of being underwater. It also kept out any predators who tures, such as auto-heading and auto-depth, dynamic compass may be too aggressively curious about its new neighbor in the and depth gauge, and tether turn counter, make it possible to

North Sea. Every few days, a pilot “spun” the ROV’s thrust- keep track of the resident ROV’s position at all times. ers to dislodge any debris that may have settled since its last Although the ROV was always powered on, it was only in deployment. Stinger also used a second Pro 4 ROV to monitor ? ight when needed. This helped conserve consumable parts, and visually inspect the resident ROV on a regular basis. especially the cartridge seals which lubricate the thrusters.

Several standard Pro 4 features lend themselves well to the Once the submersible was surfaced, Stinger completed a successful distance piloting of the resident ROV. The Vid- thorough evaluation of every component, from small screws

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