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WHAT IS AN ROV?

The Remotely Operated Vehicle (ROV) is basically a tethered underwater robot that allows to the vehicle's operator to remain in a comfortable environment while the ROV works in the hazardous environment in hundreds of water depth. All the the ROV’s systems are connected to the control container and the operators on the surface by a tether or umbilical - a cable group that carry electrical power, video and data signals back and forth between the operator and the vehicle besides that. High power applications will often use hydraulics in addition to electrical cabling. In many cases, the umbilical includes additional strength members to allow recovery of heavy devices or wreckage. Most ROV systems are equipped with, at least, a video camera and lights. Additional equipments are commonly added to expand the vehicle’s operational capabilities. These may include sonars (forward looking, side scan), magnetometers, different type of cameras (low light camera etc.), CTD (conductivity, temperature and depth), a manipulator or cutting arm, water samplers, and instruments that measure water clarity.

ROVs can vary in size from small vehicles with sensors for simple observation up to complex work systems, which can have several skilful manipulators, sensors, video cameras, tools and other equipment. Tether management system is located at the top of handling system, which contains deployable neutrally buoyant cable for local excursions. This type of handling technique allows the heavy umbilical to remain vertical in the water column while the ROV maneuvers with the smaller cable, free of the surface dynamics, which in many cases, can pull the ROV from its work station. 

 

From their initial development to their current form, ROVs have seen many changes and improvements. They have become more capable, going deeper and tackling a greater variety of tasks. Today, there is also a greater range of ROVs. They come from small one man portable systems to large sophisticated work-class systems operating at depth that no man can survive thanks to their dedicated offshore vessels. Moreover, contemporary advanced technology is allowing some automated controls such as automated depth, heading etc.. This small automated feautre easen the operability of system in the high current waters. This makes lessen the burden from the operator.

 

TR Teknoloji has a long and strong history of providing underwater solutions to vast spectrum of defense industry. TR Teknoloji’s underwater robotics equipped with high-end sensors, delivers precise and direct impact in the operations of the ROV and meet the highest requirements of specific needs. [1]

Area of Application

Oil & Gas Industry

By far the greatest application of ROVs is exploration and exploitation in oil and gas industry. Highly sophisticated and capable work class system of TR Teknoloji can be undertaken operations in water depths up to  1000 meters with different products. According to regulations of all around the world, diving is mostly prohibited in depths that greater than 250 meters of water. By this means ROV technology is important for the operation beyond the allowed depth.

As a standart procedure for operating exploitation of oil & gas sources, different types of infrastructures lay the foundation in various water depths. They extend from jackup drilling production rigs in very shallow water to subsea completion, leg platforms and spars in deep and ultra deep water, over 1500 meters. 

ROV’s technologies support several operations for services such as drilling and completion, installation and construction, inspection and maintenance etc.

Over 60 percent of the world’s ROV systems supporting oil and gas exploitation are engaged in drilling support operations. Systems are performed in water depths from 30 m to 3,048 m. This means that the full range of ROV systems are capable to support oil exploitation activities worldwide. Work class ROV systems are generally used in deeper water, areas of high current, and when intervention tasks contain hazardous environment and require the use of manipulators fluid transfer or load bearing capabilities.

TR Teknoloji, one of the first turkish developer in underwater technologies, equipes its ROV with the latest technologies available, in order to be a valid help fo any oil & gas operation.  

Military Application

From the beginning, the development of the unmanned systems has been directly requested by military applications due to high owning cost of military staff and hazardous environment of military operations. Initially, undersea robotics were developed in order to subsea reconnaissance, observation and recovery of sunken devices and weapons. By the way, later, the capability of techological devices were drastically increased and, in turn, it brought some changes to the operational capability. 

All these changes have brought to a different habits in the offshore and coastal operations. The first consequence was a significant rise of the unmanned underwater robotic systems. In addition, thanks to their capability of being used for unlimited time, no military personnel has no longer been put in hazardous environment. Unfortunately, technological improvements in military usage, bring an higher cost. Nevertheless, this price tag is completely compensated by operational capability and efficiency of subsea robotics. First and foremost, the submerged robotic system, designed for mine countermeasure and mine sweeping missions, is more expendable than a human being or a ship due to the natural danger of the mines. 

These kind of operations are dangerous not only because of explosive but also for the extreme depth that has to be reached to perform the mission itself.

In addition to that, the ROVs producers have set the target of 6000 meters deep which would cover the 98 percent of ocean floor[1] . This depth also would allow to take forward some sismic works and ultra-deep researches. This target is nothing but a critical need.

Besides all above segments of military application search, rescue (SAR) and salvage missions are also widely performed by ROV systems. Thanks to the ROV equipped with hyraulic powered robotic arms, high resolution sonar system and cameras, the localization of sunken vehicle and their recover are being completely smoothed the way for military use.

Military utilization of ROVs are highly effective but this market still needs a thrust to keep their pace forward in a technological manner. Autonomous capability of ROV would be excellent step. ROV systems has a bright future in utilization of intelligecne collection, search, rescue, salvage, reconnaissance, mine countermeasures oand others applications. ROV will be the leading actor of offshore and coastal site military applications.

Due to the fact that TR Teknoloji is a highly experinced defense industry company, TR Teknoloji has the  know-how to design and manufacture remotely operated underwater vehicle that dedicated to all above mentioned military utilizations. GELIBOLU ROV provides a complete solution to search, rescue, salvage and recovery with standart hardware on its stock. And it is the first preference of TURKISH NAVY.

Academic/Scientific Application

Scientific needs has improved by the technology progresses. For the reason that, scientific areas need more complicated and capable tools. And ROV systems are one of the best tool for complex and benthic scientific researches. Today, there are several methods to obtain data on benthic communities but the technological sophistication of ROVs and  cutting-edge high technology camera systems have allowed the biology and ecology of deep-sea habitats and organisms to be efficiently studied.[1] Flexibility of ROV with ability to comprise with different hardware, equipmnent and sensor offers ability to being performed in a wide diveristy of scientific works. 

Besides that their ability to capture high quality photographs and video documentation of the dive site, the ROV will allow them to reach previously unattainable locations. ROVs are providing scientist detailed information the terrain that a human being never able to reach.

The academic community, due in part to the limited funding available for vehicle development, has become adept at developing very capable low cost vehicles. Because of this reason GELIBOLU is a perfect solution to academic employment not only because of affordable choice but also because the GELIBOLU is equipped with comprehensive and detailed hardware solutions, with the possibility to add extra scientific sensors.

Other Applications

One of the fastest growing field of application for ROV utilziation is suprisingly inland. In the not too distant past, human divers were used to perform, nevertheless, the biggest share of the inland’s operations are being taken by ROV system nowadays. However, ROV technology has not ready to take over diver work completely yet. By the way, the ROV’s systems are already ready and extremely useful to assist divers operations. Divers are replaced by ROVs when the environment is hazardous, zero visibility, with high currents or dreaded by zebra mussels. In other word, If the risk of divers is high, ROV is taking over the situation to protect human life. Some cases of operation would be dramatic. Such as radioactive submersible or highly toxic environments. This is the time that ROV is an integral part of underwater operations to inspect underwater nuclear plants. Besides that, numerous ROV are being used in security issues. Applications include security, customs and law enforcement. In these situations the ROVs are performing underwater survelliance and reconnaissance with a high quality cameras and sonars. In addition to that, ROVs are being used for unique application such as underwater filming and treasure hunting. Documentary companies frequently prefers renting ROV in order to shooting feature-length underwater documentary.

 

Following bullet-ins are the all of the applications of ROV capable of,[1][2][3]

  • Salvage, Recovery and rescue 

  • Pipes and cable inspection

  • Bridge footing inspections

  • Sample taking

  • Lost object recoveries

  • Body and evidence recoveries

  • Environmental investigations

  • Investigating sunken objects (ships, wrecks, cars, motorbikes, aeroplanes etc.)

  • Power Stations; Hydroelectric, Nuclear

  • Reservoirs, dams grating and penstock inspections

  • Fish, crab and benthic surveys

  • Zebra mussel surveys and removal

  • Archeology

  • Side scan ground truthing

  • Video documentation

  • Windparks

  • Chemical Industries

  • Corrosion and cathodic measurements

  • Criminal Investigation

  • Ship hulls, propellers and steering gears

  • Diver observation and support

 

From the scratch design of Gelibolu ROV is aimed to perform all above applications. TR Teknoloji’s cutting edge techology product Gelibolu is what a customer needs.

OPERATION

Oil Drilling

DESCRIPTION

Use of drilling arms and stationary controls to drill a foundation infrastructure.

SENSOR & REQUIRED EQP.

Drilling arm, DVL, CTD, Robotic Arms, USBL/LBL

OPTIONAL SENSORS

Acoustic positioning systems for absolute positioning.

Search & Rescue Salvage

Use of sensors, robotics arms and cameras to search envronment.

Robotic arms, Camera, Forward looking sonar, Side scan sonar.

Pipes & Cable Inspection

Inspection of pipes and cables underlay water in order to sustain performance.

Camera, inspection specialized senors.

Sample Taking

Utilization of academic purposes or examining toxicity of performance.

Underwater Inspection

Use of camera, sonar and some other types of imaging equipments to examine underwater system.

Underwater ground mapping and truthing

Use of distance measurement devices in order to mapping intented base.

References

 

  • www.rov.org

  • en.wikipedia.org/wiki/Remotely_operated_underwater_vehicle

  • www.ofsltd.com/index.php?option=com

  • Auster, P.J, Malesta, R. J., LaRosa, S.C., Cooper, R.A. & S

  • Auster, P. J., Malatesta, R. J., LaRosa, S. C., Cooper, R. A., & Stewart, L. L. (1991). Microhabitat utilization by the megafaunal assemblage at a low relief outer continental shelf site-Middle Atlantic Bight, USA. J. Northwest Atl. Fish. Sci, 11, 59-69.

  • Christ, R. D., & Wernli Sr, R. L. (2011). The ROV manual: a user guide for observation class remotely operated vehicles. Butterworth-Heinemann.

  • Whitcomb, L. L. (2000). Underwater robotics: Out of the research laboratory and into the field. In Robotics and Automation, 2000. Proceedings. ICRA'00. IEEE International Conference on (Vol. 1, pp. 709-716). IEEE.

  • Bishop, R. (2000). Intelligent vehicle applications worldwide. Intelligent Systems and their Applications, IEEE, 15(1), 78-81.

  • Jones, D. O. (2009). Using existing industrial remotely operated vehicles for deep-sea science. Zoologica Scripta, 38(s1), 41-47.