Baltic ROV

BR-300 Industrial ROV 300m

BR-300 is a 300-meter class industrial ROV with surface power architecture designed for professional underwater inspection and controlled subsea operations. The system is intended for ports, offshore infrastructure, pipelines, cables, vessel inspection, and other subsea assets where stable navigation and repeatable inspection performance are required.

The vehicle is configured for linear inspection tasks where maintaining fixed heading and depth is important. It combines surface-powered operation, vector thruster layout, integrated stabilization functions, Full HD video, and open control architecture for project-specific inspection, survey, and sampling work.

Typical Applications

Core Technical Specifications

Parameter Value
ROV class Industrial inspection ROV
Depth rating 300 m
System architecture Surface powered
Standard tether length 400 m Kevlar-reinforced
Thruster configuration 4 vector horizontal thrusters + 2 vertical thrusters
Maximum speed Up to 2 m/s in ideal conditions
Power consumption 1600 W
Input requirement 220–240V / 50 Hz, 2–3 kW supply
Front camera Full HD Sony camera with ±90° tilt, 1920 × 1080
Rear camera Full HD Sony camera, fixed, 1920 × 1080

General and Mechanical

Parameter Value
Dimensions (L × W × H) 730 × 501 × 360 mm (base configuration without manipulator and lifting hook)
Weight in air 35 kg
Frame material HDPE1000 (high-density polyethylene)
Standard payload 3 kg
Operating temperature -5 to +45 °C
Pressure testing Each unit is pressure-tested in a chamber to 300 m
Tether length 400 m Kevlar-reinforced
Tether diameter 8–9 mm
Tether breaking force 400 kg
Tether buoyancy Slight positive as standard, optional slight negative
Deployment Mechanical drive reel included

The ROV is trimmed to neutral buoyancy in standard configuration. Fine balancing is achieved by adding or removing bottom-mounted trim weights depending on water type, including freshwater and saltwater operation. When manipulators or additional tooling are installed, trim weights are removed accordingly.

The platform is designed for inspection in moderate current conditions. Configuration is defined based on working depth, current conditions, and required tooling.

Power and Propulsion

Parameter Value
Thruster configuration 4 vector horizontal thrusters mounted at 45° + 2 vertical thrusters
Horizontal thrust 4 × 5 kg
Vertical thrust 2 × 5 kg
Motor type Brushless thrusters with magnetic coupling
Maximum speed Up to 2 m/s in ideal conditions
Thruster service life Up to 300 operating hours
Thruster replacement Modular field-replaceable design
Service kit Propeller shroud, propeller, inner and outer magnetic couplings
System power consumption 1600 W
Surface power input 220–240V / 50 Hz, 2–3 kW supply

Vector thruster configuration allows precise lateral movement, stable heading control, and smooth maneuvering during inspection along pipelines, quay walls, and subsea structures. The 45-degree horizontal layout supports controlled translation and heading correction during close inspection work.

Surface Power Architecture

BR-300 operates without onboard batteries. Power is supplied from the Surface Control Unit through the 400 m Kevlar-reinforced tether. The unit must be connected to a 220–240V / 50 Hz power source with 2–3 kW capacity.

This architecture removes charging cycles and avoids dive-time limits associated with battery-dependent systems. A stable surface power supply is required for full thruster performance under load, which helps maintain predictable behavior during long inspection runs without battery management downtime.

The same operating philosophy is used across the Baltic ROV product range, including BR-100, BR-200, BR-300, and BR-500.

Automatic Stabilization Functions

Auto Head (Course Hold)
Maintains a fixed heading automatically using gyro feedback and thruster compensation. This is important for pipeline and cable tracking where a straight trajectory is required.

Auto Depth (Depth Hold)
Maintains selected inspection depth automatically and compensates vertical drift during long inspection passes.

These functions improve inspection repeatability and reduce operator workload during routine subsea inspection operations.

Integrated Sensors and Navigation

BR-300 includes the following integrated sensors in the standard control loop:

Real-time video and telemetry are recorded directly in the control unit.

For extended navigation and survey capability, the platform supports project-specific integration of additional systems such as USBL positioning, DVL, altimeter, forward-looking sonar, and multibeam sonar. Depending on project configuration, external payload interfaces for dedicated DC power and Ethernet or serial communication can be provided on request.

Control System

The Surface Control Unit includes an industrial HPRC case, a 19-inch LED monitor, an Intel NUC computer running Linux Ubuntu, and a Sony PS4 remote controller.

The system operates on BROS (Baltic ROV Operating System), developed in-house and deployed on Linux Ubuntu.

BROS provides:

BROS is delivered as open-source software. There is no subscription and no closed firmware dependency. This gives the client transparency and allows integration of the ROV system into existing inspection workflows.

Remote diagnostic connection and software update support are available upon client request.

Reliability and Service

BR-300 is designed as a practical, serviceable inspection system rather than a closed platform. Each unit is pressure-tested in a chamber to 300 m before delivery. Brushless thrusters use magnetic coupling, which supports low-maintenance operation and modular replacement in the field.

Thrusters are field-replaceable, and the service kit can include propeller shroud, propeller, inner and outer magnetic couplings, motor, and ESC. This helps reduce downtime during operational service and simplifies maintenance logistics.

The system is configured around surface power architecture, which removes battery charging dependency and supports long inspection runs when stable surface power is available. Remote diagnostics, software support, and project-specific configuration support are available on request.

Standard Delivery Set

Optional Equipment

BR-300 is a modular platform supporting inspection, survey, and sampling missions. Optional equipment can be configured according to the task. More add-on possibilities are available on the ROV Add-Ons page.

Navigation and survey options:

Manipulation and tooling options:

These configurations are suitable for environmental monitoring, scientific research, and subsea inspection projects requiring controlled sampling operations.

The system also supports integration of client-supplied equipment already used in an existing inspection workflow. Third-party sensors, tooling, and survey modules can be installed subject to power and payload limits.

An additional removable skid frame can be installed beneath the ROV for mission-specific equipment. The skid is mechanically detachable and allows rapid reconfiguration between projects.

Baltic ROV Product Line

The BR series is designed as a scalable inspection platform for different operating depths and payload requirements. All systems share the same general philosophy: surface power architecture, modular tooling integration, and BROS open operating system.

Parameter Value
BR-100 100 m depth rating, compact inspections, confined spaces, shallow infrastructure
BR-200 200 m depth rating, ports, dams, coastal infrastructure, offshore support tasks
BR-300 300 m depth rating, industrial subsea inspection, pipelines, offshore structures
BR-500 500 m depth rating, deepwater inspection, and heavier tooling operations

Operational Limits

BR-300 is not designed for the following operating conditions:

Final configuration and suitability should be assessed against real project conditions, including depth, current, visibility, tooling mass, drag load, and required navigation accuracy.

Project Configuration

To prepare a technical proposal, the following information is required:

A technically compatible configuration will be prepared based on operational parameters. Where exact values depend on the mission, project-specific, optional, or on-request solutions can be defined for payload integration, buoyancy adjustment, skid configuration, power interfaces, and data interfaces.

FAQ

Does BR-300 use onboard batteries?
No. BR-300 uses surface power architecture and operates without onboard batteries.

What power supply is required?
The system requires 220–240V / 50 Hz input with 2–3 kW available capacity.

What is the standard tether length?
The standard tether length is 400 m Kevlar-reinforced umbilical.

Can the tether configuration be adapted?
Yes. Tether buoyancy and related configuration can be defined according to the project. Standard configuration is slight positive buoyancy, while slight negative buoyancy is optional.

Can BR-300 hold heading and depth automatically?
Yes. The system includes Auto Head and Auto Depth functions for repeatable inspection work.

Can third-party sensors or payloads be integrated?
Yes. Client-supplied equipment, third-party sensors, tooling, and survey modules can be integrated subject to power, payload, and project limits. External power and data interfaces are available on request.

Can BR-300 be used for sampling missions?
Yes. The platform supports sediment sampler and water sampling module integration for controlled sampling tasks.

What cameras are included?
The standard configuration includes a front Full HD Sony camera with ±90° tilt and a rear Full HD Sony camera.

Is the software open or closed?
BROS is delivered as open-source software. There is no subscription and no closed firmware dependency.

What service support is available?
Remote diagnostic connection and software update support are available upon request. The thruster system is modular and field-replaceable for practical maintenance.