Seakeeper 30HD

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.

$216,300 (not including installation) Buy Now
Seakeeper 30HD

Ideal for Boats

~ 35' -44'

~ 45' - 54'

~ 55' - 64'

~ 65' - 74'

~ 75' +

Seakeeper 30HD shown to scale here on a 35M Survey Boat.

Proceed with Confidence


Designed for longer, rougher use. Seakeeper HD will keep you stable and safe, no matter how long the job

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 3,920 lbs (1,778 kg)
Dimensions 54.3 L x 55.9 W x 43.5 H (inches)
1.38 L x 1.42 W x 1.11 H (meters)
View full spec sheet Seakeeper 30HD

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 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.

Seakeeper 30HD


Rated Speed 4,400 RPM
Angular Momentum at Rated RPM 30,000 N-M-S
Anti-Rolling Torque at Rated RPM 62,571 N-M
Spool-up Time to Rated RPM 75 minutes (4,400 RPM)
Spool-up Time to Stabilization 50 minutes (3,500 RPM)
Spool-up Power
AC Motor 3000 Watts Max
DC Control 240 Watts
Operating Power
AC Motor (sea state dependent) 2000 - 3000 Watts
DC Control 240 Watts
AC Input Voltage 208 - 230 VAC (+/- 10%), 50/60 Hz, Single Phase
DC Input Voltage 24 VDC @ 10 Amps
Weight 3,920 lbs (1,778 kg)
Envelope Dimensions 54.3 L x 55.9 W x 43.5 H (inches)
1.38 L x 1.42 W x 1.11 H (meters)
Noise Output 72-74 dBC at 1 meter

Seakeeper Warranty

To ensure peace of mind, all Seakeeper products come
with a multi-year factory warranty

View Warranty Details
Distrbutor IconCreated with Sketch. Distrbutor IconCreated with Sketch. Installation Center IconCreated with Sketch. Seakeeper IconCreated with Sketch. Seakeeper IconCreated with Sketch. Service Center IconCreated with Sketch. Service Installation ComboCreated with Sketch. angle-rightarrow-leftarrow-rightboat-27-323Asset 1boat-35-44boat-40-49boat-45-54boat-50-59boat-55-64boat-60-69boat-65-74 boat-70-84Asset 1boat-85+ Asset 1@3xCreated with Sketch. Calendar IconCombined ShapeclockIconFacebookfacebook earthgoogle-plusicon-checkGroup 3Created with Sketch. Group 3Created with Sketch. icon-elite-dealer-blue-dark icon-elite-dealer-blue icon-elite-dealer Installation-iconCreated with Sketch. Service Center IconCreated with Sketch. Mobile CenterCreated with Sketch. Installation CenterCreated with Sketch. instagram linkedin locationLogo/Logomarkmail IconpersonPhone IconTriangle-12Created with Sketch. Award IconLogo/SHD WhiteCreated with Sketch. Logo/SHD WhiteCreated with Sketch. Seakeeper LogomarkSmile IconInstallation IcontooltipTwittertwittervimeo youtube
View The
Seakeeper Brochure
Commercial (HD)