NEWS

1. Industry Intend to Work

The most crucial consideration is the industry or type of tasks you intend to use the ROV for. ROVs can be classified into observation and work-class vehicles. Observation ROVs come in different sizes, suitable for various tasks, ranging from portable size that can be hand-carried and weigh around 25 kilograms to larger ones exceeding over 100 kg. Working-class ROVs, on the other hand, vary in size and can even be taller and larger than an adult male, depending on the specific job requirements.

Furthermore, most ROVs are expandable systems that allow the installation of various equipment for different tasks. However, the benefits of different equipment can be differnet. For example, installing a cleaning brush is highly beneficial for offshore wind turbine marine growth removal, whereas installing a 4K camera and a manipulator can assist in collecting marine samples for academic research.

• Offshore Wind Energy

  ROVs have been used in offshore wind farm operations for many years, encompassing categories like survey and monitoring, foundation services, inspection, and O&M. These works are further divided into various specific tasks such as geological surveys, wind turbine GVI, CVI, and CP probe inspections, and subsea cable inspections. The choice between observation and work-class ROVs is often based on the depth of the task and the equipment needed. 

  For tasks like wind turbine cleaning, observation ROVs with cleaning brushes are commonly used. For cable inspections, working-class ROVs equipped with cable trackers, scanning equipment, and large sonars are employed for accurate positioning.

  
  

• Aquaculture

  As previously mentioned, small observation ROVs, which are lightweight and easily portable, have been successfully adopted by the global aquaculture market. Their user-friendly interfaces have significantly helped fish farmers manage fishing nets, conduct mooring inspections, remove mort, test water quality, and observe fish behavior with ease. These ROVs have reduced labor costs for fishermen. Currently, in major aquaculture nations like Northern Europe and Australia, many fishermen have adopted these devices. Moreover, ROVs used in aquaculture require relatively simple equipment compared to other industries, resulting in lower costs, including water quality sensors and high-definition cameras

  

• Academic Research

  Ocean science is closely related to climate, biodiversity, and Earth's climate. ROV's born help scientists to overcome environmental limitations. Since ROVs can withstand low-temperature ocean or lake conditions, ocean currents, and functional in both saltwater and freshwater environments. They are also pressure-resistant and can operate at high depths. Furthermore, marine science often requires long-term monitoring and observation, and ROVs break time limitation, enabling extended underwater missions for capturing desired footage or continuous monitoring of specific environments.

  

• UXO Inspection

  War is cruel, and its after effect persists long after even conflicts ends. Buried UXO and landmines in the sea continue to pose threats after World War II. The unpredictability of their explosion and the harm they can cause to ships and civilians make the detection work essential. ROVs equipped with tracks are commonly used for this purpose. These ROVs have bottom-mounted tracks that enable them to climb on the seabed, approach unexploded ordnance, and report their condition, appearance, and level of damage, assisting in making informed decisions.

  

2. Depth Rating

Is your mission in a lake or the deep sea? Each ROV design has a maximum depth limitation. For example, DWTEK  observation I90 ROV can reach depths of up to 1,000 meters, while the work-class ROV Monew can go as deep as 3,000 meters underwater. These capabilities have earned real cases of working experience, particularly in applications like offshore wind farms.

3. Expandability

As discussed earlier in relation to various industry requirements, the expandability of an ROV, i.e., the number of equipment it can accommodate, is directly proportional to the complexity of tasks it can perform. Larger ROVs have more space and weight-bearing capacity for accommodating a wider range of equipment. Their greater weight also prevents tilting in water.

Comparison of DWTEK ROVs

DWTEK ROV line includes I30, I90, I90+, Monew, Crawler. The smallest I30 is a portable vehicle designed for the aquaculture industry, allowing being deployed in 300m. The middle size observation ROV comprises I90 and I90+, these two  are the best seller models in DWTEK since their broader applications. 

Monew, a powerful and ideal vehicle for heavy subsea works, the larger platform allowing equipping more add-on to fulfill the heavy duty. Crawler, with an unusual bottom track design, realizing seabed walking is not a mission impossible anymore helping closely observe objects.