Meet the
4.5
For yachts 40-46 feet.
Up to 95% less yacht roll.
TECHNICAL PROFILE
Seakeeper 4.5 specifications
Designed for yachts approximately 40–46 feet, the Seakeeper 4.5 delivers strong stabilization in a compact, lightweight package. Its fully internal design supports installation in both new builds and refit applications.
MSRP 2026
$55,600
YACHT FIT
~40–46 ft
Recommended yacht length
18 tons
Maximum displacement
26.56 × 28.05 × 20.98 in
Envelope dimensions
SYSTEM
736 lb
Unit weight · 333.8 kg
AC
Power source
2 years
Standard warranty · 2,000 hours
PERFORMANCE
9,300 RPM
Maximum rated speed
4,500 N·m·s
Angular momentum
~72 dB
Noise output at 1 meter
OPERATION
35 minutes
Spool-up to maximum speed
19 minutes
Ready for stabilization
950–1,600 W
Operating power
Spool-up power: 1,950 W maximum. Operating input: 110 or 208–230 VAC.
MSRP excludes installation and may be subject to tariff pass-through.