
Seakeeper 4
The Seakeeper 4 is revolutionizing roll reduction performance on boats ~38-44 feet in a smaller, lighter package. Designed to run on DC power for boats without a generator, it can fit anywhere the Seakeeper 3 fits now, making it a great option for upgrading.

The next generation of Seakeeper innovations introduces the most efficient and most effective gyrostabilizers ever built.
More stabilization. Smaller Package.
Ideal for Boats
~ 23′ – 30′
~ 30′ – 36′
~ 35′ – 41′
~ 38′ – 44′
~ 40′ – 46′
~ 42′ – 48′
~ 44′ – 52′
~ 50′ – 59′
~ 60′ – 75′
~ 70′ – 85′
~ 85′ +

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Asymmetric Flywheel
ConnectBox
Single-Cylinder Brake
Power Options

Faster Installation
The new frame can be disassembled to allow for installation in locations where it otherwise may not have fit.

Economical Maintenance
Zinc-nickel plated components, a single-cylinder brake design, and a redesigned cooling system provide better protection and easier maintenance.

Easier Access
Fewer mounting bolts, greater access clearances, and quick-release top cover fasteners make service faster and easier.
Seakeeper 4
Specifications
Max Rated Speed | 8,250 RPM |
Angular Momentum at Max Rated RPM | 4,000 N-M-S |
Max Anti-rolling Torque at Max Rated RPM | 10,427 N-m |
Spool-up Time to Max Rated RPM | 60 minutes (8,250 RPM) |
Spool-up Time to Stabilization | 34 minutes (6,188 RPM) |
Power Consumption | |
Spool-Up Power | 1,050 Watts Max |
Spool-Up Power Input | 12 VDC @ 88 Amps Max |
Operating Power | 550 – 1,050 Watts |
Operating Power Input | 12 VDC @ 46 – 88 Amps |
Control Power | 120 Watts Max |
Control Power Input | 12 VDC @ 15 Amps Max |
Seawater Pump Power Input | 12 VDC @ 15 Amps Max |
Weight | 746 lb (338 kg) |
Envelope Dimensions | 26.56 L x 28.05 W x 20.15 H (inches) 0.675 L x 0.713 W x 0.512 H (meters) |
Noise Output | <72 dBC @ 3.3 feet (1 meter) |
Seawater Supply to Heat Exchanger | 2.5 GPM (9.5 LPM) Minimum 4 GPM (15.2 LPM) Maximum |
Ambient Air Temperature | 32F – 140F (0C – 60C) |
Seakeeper Warranty
To ensure peace of mind, all Seakeeper products come
with a multi-year factory warranty.