Seakeeper 5 - Gyro Stabiliser

The Seakeeper 9 is designed to achieve 70 to 90% roll reduction on boats up to 35 tons, vessels 50-65′. Two units can be fitted for larger boats. The Seakeeper 9 requires only modest electrical power, has no outside appendages, and can be installed off centerline, if necessary. Its computerized control and vacuum technology make it the first truly practical, and only modern, anti-roll gyro.

Technical Specifcation

Rated RPM 9,000 RPM
Angular Momentum at Rated RPM 9,000 N-M-S
Anti-Rolling Torque at Rated RPM 18,810 N-M
Spool-up Time to Rated RPM 55 minutes (9,000 RPM)
Spool-up Time to Stabilization 38 minutes (8,000 RPM)
Spool-up Power
AC Motor 3000 Watts Max
DC Control 240 Watts
Operating Power
AC Motor (sea state dependent): 1500-2000 Watts
DC Control: 240 Watts
AC Input Voltage: 208-230 VAC (+/- 10%), 50/60 Hz, Single Phase
DC Input Voltage: 24 VDC@ 10 Amps
Sea Water Supply to Heat Exchanger 30 LPM (8 GPM) maximum
15 LPM (4 GPM) minimum
Ambient Air Temperature 0°-60° C (32° – 140° F)
Weight 550 kg (1210 lbs) bolt-in installation
Envelope Dimensions Length x Width x Height
0.852 L x 0.903 W x 0.720 H (meters)
33.5 L x 35.6 W x 28.3 H (inches)
Noise Output Steady state noise measured in the
factory at a 1 meter distance measures
68-70 dBC.

Technical Drawings

What Seakeeper is right for me?

Frequently Asked Questions

What is a Seakeeper and what does it do?

It is a computer controlled gyroscope that eliminates most boat roll, including the fatigue, anxiety and seasickness that goes with it.  Because of this game changing effect, PR Nautica have successfuly installed over 30 Seakeeper units worldwide.

How much does the Seakeeper weight, and what are the power and space requirements?

Typically, the Seakeeper weighs between 2 and 4% of boat weight, requires half or less the power of air conditioning, and fits in available space down in the after part of the hull.  Nothing extends outside the hull and the Seakeeper is a small percentage of the overall volume of the boat.

Is there a Seakeeper suitable for my boat?

Seakeepers are sutiable for most boats 30 feet and above. PR Nautica can install the best option on new vessels and as a retro project.

Up to 20 tons, vessels 30-50′: Seakeeper 5
Up to 35 tons, vessels 50-65′: Seakeeper 9
Up to 70 tons, vessels 65-80′ : Seakeeper 16
Up to 100 tons, vessels 80-100′: Seakeeper 26
Greater than 100 tons, vessels >100′: Seakeeper 35

I have an existing boat, can a Seakeeper be installed after build?

Yes, we can fit Seakeepers to both new vessels and aftermarket. The time of a retrofit installtion will vary depending on the Seakeeper and the model of the vessel. Typical installation time is 1-3 weeks. Get in touch for a custom quotation.

Contact Us

Send us a message and and we'll get back to you as quick as we can

Not readable? Change text. captcha txt