Side-Power Thrusters and Parts

Docking by Control LLC. is an authorized dealer and installer for Imtra Side-Power® bow and stern thrusters.

High quality products. Unsurpassed customer service. Sixty years of experience. Imtra is the known reliable supplier to vessel owners, service yards, builders, commercial marine and oil and gas industries.

Side-Power boat stabilizers and thrusters offer the highest quality in ride control and maneuvering systems available on the market today. Innovative thinking by Side-Power has resulted in the most advanced boat stabilizer system at any speed, including at rest. A unique programming sequence allows dynamic centering of the fin based on the current speed of the boat; this combined with advanced hydrodynamic design of the fin, makes Side-Power boat stabilizers up to 40% more efficient than any other. Low-profile actuators, advanced electronic control and low maintenance make Side-Power boat stabilizers ideal for the recreational, yacht and commercial markets.

Side-Power thrusters are the chosen brand by the majority of recreational OEM builders and have a growing presence in the commercial field. Reliability, ease of installation and a dedication to product development and improvement have been driving forces behind the popularity of Side-Power thrusters. Side-Power’s innovative proportional DC control of the thruster allows precise movement of the yacht, giving complete confidence in any situation. Side-Power hydraulic systems are tried and tested under the harshest of conditions in both recreational and commercial fields.

Side-Power systems are not only for new builds. Retrofits of thrusters and boat stabilizers help improve the value and usability of any vessel. Sizing of both boat stabilizers and thrusters is critical to the final outcome of any project. Side-Power Thruster Sizing for information regarding thruster sizing.

Power Thrust Install

Choosing the Right Side-power Thruster for Your Boat Every boat operator can benefit by having a thruster installed on their boat. The key to getting the full benefits of the thruster is to select the correct one to ensure that it will do the job you want it to. This is one of two main factors to consider when deciding on a thruster for your boat.

Today most pleasure craft over 35’ have a bow thruster as standard equipment. The thruster will usually meet the expectations of most customers when using the boat under normal weather conditions. The sizes used by boatbuilders will vary depending on the boat’s intended usage and price level. In today’s production boats of around 45’-50’, the typical thruster will push the boat’s bow against a direct sidewind of 21-23 knots.

Some custom built or very high end boats may have a high power bow thruster that pushes the bow against a direct sidewind of 24-26 knots. For boatowners who use their boats in more demanding conditions or have a strong current in their local marina, or requiring high performance, boatbuilders can offer upgrades to a more powerful thruster system. However, few pleasure craft need a thruster that can push the bow against a direct sidewind of more than 24-26 knots.

The thruster’s performance on a boat is basically determined by the boat’s wind area, the wind area distribution and the thruster’s tunnel position in the hull. By knowing these factors we can calculate the wind pressure on the boat and the center point of this wind pressure. From these calculations we can determine what thrust is needed to counter the wind pressure with the given thruster position. The boat weight is normally not a major factor for most pleasure craft.

The main factors that decide correct thruster sizing are:

  • Boat owner's performance requirements
  • Boat size,
  • Boat type and
  • Boat shape

The charts below give general guidelines to help in selecting a thruster for your boat. We do offer a more involved thruster calculation process for determining the correct model for your boat. If you would like to contact us to request further details, please feel free to do so by calling us at (321) 890-4511, or by e-mail at