The Seakeeper 30HD is built to eliminate up to 95% of boat roll on vessels up to ~85 tons. Larger vessels can be fitted with multiple units to achieve optimal results. Unlike traditional external fins, the Seakeeper 30HD requires only modest electrical power and has no external appendages—meaning no drag or risk of snags.


(Does not include installation.)

Take a look under the hood!

  • Weight: 3,920 lbs (1,778 kg)
  • Dimensions: 52.8 L x 55.9 W x 42.4 H (inches) 1.342 L x 1.419 W x 1.076 H (meters)

Innovative Cooling System

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Vacuum Sealed

Seakeeper’s vacuum encapsulation enables the flywheel to spin roughly three times faster, cuts flywheel weight by two-thirds and halves power requirements. Moreover, because the critical components (flywheel, bearings, and motor) are sealed for life in a vacuum, they are forever isolated from the marine environment.

Active Control

Seakepeeper’s active control optimizes gyro torque, providing an unsurpassed level of performance. Unlike a passively controlled gyro, which must be turned off in the roughest conditions and/or at higher speeds, the Seakeeper is effective at all speeds and can be used in all sea conditions.

New Dash Display

Control your Seakeeper with the push of a button on our new user-friendly dash display. Not only is the display simple to use, but it integrates into your existing dash units for optimal performance.