Seakeeper 18

Crafted for ~60-75 foot boats, up to 56 tons, the Seakeeper 18 is designed to eliminate up to 95% of boat roll. The Seakeeper 18 is completely internal, requires only modest electrical power, and can be installed virtually anywhere on board.

MSRP $174,900

INSTALL $31,350 *

*This is the average installation cost for this Seakeeper unit. This does not include taxes, yard time or special modifications. This is only an estimate.

Ideal for Boats

Seakeeper 18 shown to scale here on a 73' Absolute Navetta.

Stabilization for Any Occasion

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

Take a Look Under the Hood

Weight	2,460 (1,116 kg)
Dimensions	42.5 L x 43.2 W x 33.6 H (inches)
	1.078 L x 1.096 W x 0.854 H (meters)

View full spec sheet

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.

Intuitive 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.

Max Rated Speed	6,150 RPM
Angular Momentum at Max Rated RPM	18,000 N-M-S
Max Anti-rolling Torque at Max Rated RPM	47,881 N-M
Spool-up Time to Max Rated RPM	42 minutes (6,150 RPM)
Spool-up Time to Stabilization	27 minutes (4,613 RPM)
Spool-up Power
Spool-Up Power	3,700 Watts Max
Operating Power	1,425 – 3,000 Watts (Sea State Dependent)
AC Power Input	30 Amps @ 208 – 230 VAC 50/60 Hz, Single Phase
Control Power	240 Watts
Control Power Input	24 VDC @ 10 Amps Max
Seawater Pump Power Input Over Current Protection based on installed pump rating	24 VDC @ 10 Amps Max
Weight	2,460 lbs (1,116 kg)
Envelope Dimensions	42.5 L x 43.2 W x 33.6 H (inches) 1.078 L x 1.096 W x 0.854 H (meters)
Noise Output	<68 dBC at 1 meter
Seawater Supply to Heat Exchanger	4 GPM (15.1 LPM) minimum 8 GPM (30.3 LPM) maximum
Ambient Air Temperature	32° – 140° F (0° – 60° C)