Seakeeper 3
Seakeeper-3 Logo
They say great things come in small packages and we set out to prove it. The Seakeeper 3 is our biggest smallest thing yet, specially designed to eliminate roll on ~36’ – 39’ boats. Refits have never been easier than with the Seakeeper 3’s leaning post installation option!

Seakeeper 3

Max Rated Speed8,450 RPM
Angular Momentum at Max Rated RPM3,000 N-M-S
Max Anti-Rolling Torque at Max Rated RPM7,854 N-M
Spool-up Time to Max Rated RPM50 minutes (8,450 RPM)
Spool-up Time to Stabilization36 minutes (7,185 RPM)
Power Consumption
Spool-Up Power900 Watts Max
Spool-Up Power Input12 VDC @ 85 Amps
Operating Power400 – 750 Watts (Sea State Dependent)
Operating Power Input12 VDC @ 33-62 Amps
Control Power125 Watts
Control Power Input12 VDC @ 10 Amps
Seawater Pump Power Input
Over Current Protection based on installed pump rating
12 VDC @ 15 Amps Max
Weight550 lbs (249 kg)
Envelope Dimensions26.8 L x 27.0 W x 23.3 H (inches)
0.680 L x 0.685 W x 0.592 H (meters)
Noise Output<72 dBC at 1 meter
Sea Water Supply to Heat Exchanger2 – 6 Gal/Min.
Ambient Air Temperature0 – 60 Deg. C (32 – 122 Deg. F)


Frequently asked questions

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.
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.
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

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.

Seakeeper projects

As an official Seakeeper Partner we have conducted over 30 exciting Seakeeper projects world wide.

Seakeeper UK Service Center, Installation Center, and Mobile Service Center.

Get in touch to learn more about how Seakeeper can eliminate boat roll, including the fatigue, anxiety and seasickness that goes with it.