The Seakeeper 40 is designed to eliminate up to 95% of boat roll on boats 85 feet and up (up to 115 tons) and now features field replaceable bearings (FRB). Engineered from the previous Seakeeper 35 model, we've improved performance without sacrificing power, space, or weight.
Multiple units can be fitted for larger boats.
Small & Lightweight
Seakeeper weighs only a small fraction of the boat's displacement
Eliminate Boat Roll
Eliminate up to 95% of boat roll and the danger, fatigue, anxiety, and seasickness that go with it
Flexible & Efficient
Unlike traditional fins, Seakeeper is completely internal and can be installed virtually anywhere
Innovative Cooling System
Our patented cooling system allows the flywheel to spin at an extremely high rate of speed, providing ultimate performance in the smallest and lightest package possible.
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 in a vacuum, they are isolated from the marine environment.
Active Control
Seakeeper’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.