What Size Gyro Stabilizer Do I Need for My Boat?

At Smartgyro, we believe uninterrupted time on the water is the ultimate luxury. Whether you're cruising offshore or anchored in a quiet bay, comfort and stability should never be left to chance.

That’s why our marine gyro stabilizers are engineered to reduce vessel roll, minimize maintenance downtime, and integrate seamlessly into a wide range of boats—from refits to new builds. Designed for vessels from 40 to over 95 feet, our models offer flexible, high-performance stabilization solutions trusted by both private owners and professional shipyards alike.

If you're wondering which Smartgyro stabilizer is right for your boat, you're in the right place.

Why Choosing the Right Size Matters

Selecting the correct size gyro stabilizer is essential to ensure optimal performance, safety, and onboard comfort.

Undersizing a stabilizer can compromise roll reduction effectiveness. In space-constrained installations, it may be tempting to choose a smaller unit, but the improvement often falls short of long-term expectations. For this reason, Smartgyro strongly advises against installing a model below the recommended size range for your vessel.

Oversizing, on the other hand, can deliver extreme roll reduction, but also brings unnecessary weight, higher energy consumption, and increased costs. In most cases, these trade-offs are not justified, especially when the correctly sized model already provides outstanding stabilization.

At Smartgyro, our goal is to achieve at least 80% roll reduction, providing a significant and lasting improvement in onboard comfort. That level of performance doesn’t rely on raw power alone—it depends on selecting a stabilizer that matches your boat’s size, displacement, and overall configuration.

Key Factors to Consider When Sizing a Gyro Stabilizer

Choosing the right gyro stabilizer starts with understanding the fundamental characteristics of your vessel. Several technical parameters influence the amount of stabilizing torque required, and each plays a critical role in the sizing process.

• Boat Size and Weight: Length overall (LOA) and displacement are primary indicators of the stabilizer’s workload. As a general rule, the larger and heavier the vessel, the more torque is needed to counteract roll motion effectively.
• Displacement and Center of Gravity: In addition to weight, the boat’s center of gravity—often expressed as GMT (Transverse Metacentric Height)—is a crucial factor. A higher center of gravity increases the rolling moment, demanding more from the gyro to achieve the same level of stabilization. Proper assessment of both displacement in tons and stability profile is key to selecting the appropriate unit.

These technical evaluations are carried out by the Smartgyro team as part of the consultation and quotation process. In cases where detailed vessel specifications are unavailable (particularly in refit projects) our team can perform an onboard inspection to assess available space, layout, and key parameters directly. This hands-on approach ensures that the most suitable stabilizer is recommended, even when documentation is limited or incomplete.

Smartgyro stabilizers are designed for boats ranging from 40 to 95 feet and beyond. Each unit features our signature modular design, along with advanced vacuum and liquid cooling systems, to ensure consistent, high-level performance even in the most demanding conditions.

Each model is recommended for a specific range of vessel length and displacement. Below, you’ll find a quick reference to help you identify the unit that might best suit your boat—complete with direct links to product pages and technical datasheets.

Among the specs listed, two values often raise questions: Angular Momentum and Anti-Rolling Torque. Here’s the difference:

• Angular Momentum gives an idea of how much energy is "stored" in the flywheel. The higher the number, the more potential force the stabilizer has.
• Anti-Rolling Torque is the real-world output: it’s the force the unit delivers to your hull to reduce rolling.

Think of it like this: Angular Momentum tells you how powerful the system could be; Anti-Rolling Torque tells you what it actually does when the sea gets rough.

SG20 – For boats 45–55 ft, or up to 25 tons
Explore SG20 Product page
Download datasheet

SG40 – For boats 50–60 ft, or up to 40 tons
Explore SG40 Product page
Download datasheet

SG60 – For boats 55–65 ft, or up to 50 tons
Explore SG60 Product page
Download datasheet

SG80 – For boats 60–70 ft, or up to 60 tons
Explore SG80 Product page
Download datasheet

SG120 – For boats 70–85 ft, or up to 75 tons
Explore SG120 Product page
Download datasheet

SG150 – For boats 80–95 ft, or up to 100 tons
Explore SG150 Product page
Download datasheet

Choosing the right Smartgyro stabilizer can transform your time on the water. Whether you're cruising coastal waters or heading offshore, stability matters, not just for comfort, but for safety, endurance, and overall boating experience.

Frequently Asked Questions (FAQ)

Can I install more than one gyro stabilizer?

Yes. Multiple gyro configurations are absolutely possible—especially for larger yachts or retrofitted vessels where space constraints prevent the installation of a single, larger unit. In these cases, two or more stabilizers can be installed in parallel to achieve the required level of stabilization.

How much space does a gyro stabilizer take?

Dimensions vary depending on the model. Smartgyro stabilizers are designed with a compact dimensions and feature mounting footprint that are fully compatible with leading gyro systems on the market. Explore technical specifications for each model.

What happens if I choose a stabilizer that’s too small?

An undersized stabilizer may provide some reduction in roll, but often not enough to ensure consistent comfort in real-world conditions. This can lead to unmet expectations and reduced onboard satisfaction over time. For optimal performance, Smartgyro always recommends the model best suited to your vessel’s specifications.

Have questions or ready to explore installation options?
Find your nearest Smartgyro dealer and take the next step.