T200 Thruster


The T200 Thruster is the world’s most popular underwater thruster for ROVs, AUVs, surface vessels, and more! Its patented flooded motor design makes it powerful, efficient, compact, and affordable. The T200 is in use on thousands of marine robotic vehicles around the world including the BlueROV2.

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HS Code: 8501.31.4000

Product Description

The T200 Thruster is a patented underwater thruster designed specifically for marine robotics.

Versus the T100 Thruster, the T200 is better for larger vehicles and especially for human-carrying vehicles. It’s much better suited for use on a kayak, stand-up paddleboard, while scuba-diving, or even on a small fishing boat. They are the same physical size as the T100 Thrusters, but the internal components are larger.


The T200 was designed for various consumers and limitless applications. Students and Schools can use the T200 for educational projects or to compete in competitions such as the AUVSI RoboSub and RoboBoat competitions and the MATE ROV competition. Its capable and affordable hardware make it perfect for Makers and Hobbyists, as well as Professional Users who want a high-quality thruster that performs better than many of the high-end (expensive) alternatives.


The T200 is basically a brushless electric motor, just like you’d find on an RC airplane or a quadcopter drone. The big difference is that this motor is purpose-built for use in the ocean and was designed specifically for use on ROVs, AUVs, and robotic surface vehicles. Of course you could also use it to propel your stand-up-paddleboard or cruise around while kayaking! Its compact design fits in any project.

The T200 is made of high-strength, UV resistant polycarbonate injection molded plastic. The core of the motor is sealed and protected with an epoxy coating and it uses high-performance plastic bearings in place of steel bearings that rust in saltwater. Everything that isn’t plastic is either aluminum or high-quality stainless steel that doesn’t corrode.

A specially designed propeller and nozzle provides efficient, powerful thrust while active water-cooling keeps the motor cool. Unlike other thrusters, our design doesn’t have any air- or oil-filled cavities – water flows freely through all parts of the motor while it’s running and can handle extreme pressures.

The thruster is easy to use: just connect the three motor wires to any brushless electronic speed controller (ESC) and you can control it with an RC radio or a microcontroller. It’s usable with Arduino, ArduPilot, Raspberry Pi, BeagleBone, and many other embedded platforms.

The T200 comes with clockwise and counter-clockwise propellers to counter torque.


  • 1 x T200 Thruster
  • 1 x Clockwise and counterclockwise propeller


Full Throttle FWD/REV Thrust @ Nominal (16 V)5.25 / 4.1 kg f11.6 / 9.0 lb f
Full Throttle FWD/REV Thrust @ Maximum (20 V)6.7 / 5.05 kg f14.8 / 11.1 lb f
Minimum Thrust0.02 kg f*0.05 lb f*
Operating Voltage7-20 volts
Full Throttle Current @ Nominal (16 V)24 Amps
Full Throttle Current @ Maximum (20 V)32 Amps
Full Throttle Power @ Nominal (16 V)390 Watts
Full Throttle Power @ Maximum (20 V)645 Watts
Length113 mm4.45 in
Diameter100 mm3.9 in
Weight in Air (with 1m cable)0.76 lb344 g
Weight in Water (with 1m cable)0.34 lb156 g
Propeller Diameter76 mm3.0 in
Mounting Hole ThreadsM3 x 0.5
Mounting Hole Spacing19 mm0.75 in
Cable Length1.0 m39 in
Cable Diameter6.3 mm0.25 in

*Values limited by ESC used to drive thruster.

Note that nominal operation at 12-16 V is recommended for the best balance of thrust and efficiency, though operation at up to 20 V is allowable. Exceeding 20 V is not within the rating and not recommended, please see here for more information.

For more detailed performance specifications, including thrust, RPM, power, and efficiency at various throttle levels and supply voltages from 10-20 V, please see the performance charts below.

Performance Charts

Click on the legend to hide or show the data set for each voltage. All the raw data and notes on the testing procedure used to generate these charts can be downloaded here:

T200-Public-Performance-Data-10-20V-September-2019 (.xlsx)

T200 Thruster Performance

Thrust at 10-20 V

Current Draw at 10-20 V

Efficiency at 10-20 V

Thrust and Power at 10-20 V

RPM at 10-20 V

2D Drawings

T200 2D Drawing

3D Models

T200-THRUSTER-R1 (.zip)

Revision History

19 September 2014

  • R1 – Initial Release

Quick Start

1. Connect motor wires to ESC and connect the ESC to power and a signal.

2. Send a signal and the thruster will start spinning. That’s it.

T200 Quickstart

Important Notes

Always practice caution when you’re working with electricity in water and with the spinning blades of the propeller. Keep body parts away from the thruster inlet and outlet to avoid injury.

Do not operate the thruster for extended periods out of water. The bearings are lubricated by the water and vibration and noise will be greater when dry.

Do not use threadlocking compounds like Loctite on any part of the thruster. It will damage the plastic and cause it to become brittle.

The thruster can handle saltwater environments pretty well, but it does not get along with seaweed. Avoid sucking seaweed into the thruster to avoid damage.


T200 Thruster Usage

Learn about different installation techniques, maintenance and troubleshooting for the T200 Thruster!

Thruster Disassembly/Re-Assembly

Learn how to take apart your thruster for cleaning, inspection or just to see how it works!

Changing a Propeller

Learn how to quickly change a propeller on a T100 or T200!

Cable Stripping

Learn how to strip thick urethane cables in preparation for potting or connecting!


BlueRobotics Forums – Thrusters and Motors