Ocean Modules V4 ROV
The V4 is a perfect compromise between size and power. It is small enough to operate in confined spaces where standard-sized inspection class vehicles will not fit, but still powerful enough to operate quickly in environments that preclude the use of micro ROVs. The weight to thrust ratio is impressive regardless if the V4 is compared to inspection class ROVs or micro ROVs.
Practically, this means that deployment in water towers, reservoirs and other areas that are difficult to access, is easy. The small size allows passage through standard hatches and pipes, without sacrificing the extreme ease of use, power and reliability of the V8 Sii ROV.
The V4 shares many components with its larger siblings making it the perfect back-up vehicle, a cost-effective alternative ensuring that whatever unexpected situations a job may present, there is always a solution on hand. The V4 borrows not only the thrusters but also the inertial measurement unit and control system from the revolutionary V8 Sii which provides amazingly stable operation.
Paired with SPOT.ON, the patented industry standard survey management system software, these systems will provide a totally unique approach to confined space inspection and documentation.
Special Options
Full power ROV systems in extremely small and light packages, the Reservoir ROV (RESROV) and Hot Water ROV (HOTROV) are designed specifically for safe and painless inspections of drinking water reservoir tanks, and hot water systems, respectively.
The V4 can be delivered in a special configuration based on heat-resistant components, dubbed HOTROV. As a world first, this allows the V4 to be used for inspections inside active hot water accumulator tanks. HOTROV will tolerate 65°C continuously, and 75°C momentarily.
The V4 can also be delivered in a certified drinking water safe configuration for use in any type of water reservoir. Both versions may also be equipped with metal thickness gauges, high-pressure cleaning heads, suction heads and sensors for water quality measurement.
ROVPack
The small size and weight of the V4 in combination with the carrying concept ROVPack makes it easy and safe to access tight and hard-to-reach areas
Such areas, for example water towers and reservoirs have previously been restricted to micro-ROVs. With these innovations it is now possible to use a full-power vehicle, equipped with the entire range of sensors, cleaning equipment and tools available for the standard V8 Sii.
A full system can easily be transported and operated by two people.
Download the Ocean Modules Product Brochure
Ocean Modules ROV Comparison Table
| V4 | V8 Sii | V8 Offshore | |
|---|---|---|---|
| Control System | V4 Stable | V8 360° | V8 360° | Classification | Inspection | Intervention | Light Work |
| Depth Rating | 500 | 1000 (*) | 3000 |
| Max Umbilical | 500 | 2500 (*) | 3000 |
| Length | 0.5 | 0.8 | 1.1 |
| Width | 0.4 | 0.7 | 0.8 |
| Height | 0.3 | 0.5 | 0.9 |
| Weight | 20 | 60 | 300 |
| Payload | 5 | 10 | 20 |
| Power | 3kW | 5kW | 10kW |
| Thrusters | 4x T110 | 8x T110 | 8x T150 |
(All length measurements in meters and all weight measurements in kg.)
* Depth rating beyond 500m requires denser, heavier buoyancy material, tether lengths beyond 500m require fiber-optic interface.

