Specifications:
The Seakeeper 3DC is designed for boats up to 10 tons and vessels 30-40 feet in length, achieving a roll reduction of 70 to 90%. It operates at a rated speed of 6,400 RPM with an angular momentum of 3,000 N-M-S and an anti-rolling torque of 6,509 N-M at rated RPM. The spool-up time to reach rated RPM is 38 minutes, while stabilization occurs at 27 minutes (5,440 RPM).

Power Requirements:
The AC motor requires a maximum of 900 Watts from a True Sine Inverter, while the DC control uses 70 Watts. Operating power varies between 450-900 Watts for the AC motor and 100 Watts for the DC control. The AC input voltage ranges from 110-230 VAC (+/- 10%), 50/60 Hz, single phase, and the DC input voltage is 12 VDC at 15 Amps.

Environmental and Installation Details:
The system requires a sea water supply of 22 LPM (6 GPM) maximum to the heat exchanger and a minimum of 7.6 LPM (2 GPM). It operates within an ambient air temperature range of 0°-60° C (32°-140° F). The unit weighs 358 kg (790 lbs) and has dimensions of 0.765 L x 0.757 W x 0.628 H meters (30.1 L x 29.8 W x 24.7 H inches).

Noise Levels:
At full operating RPM, the noise output is measured at 62-64 dBC at a 1-meter distance, with potentially higher levels during spool-up.

Design and Installation:
The Seakeeper 3DC is notable for its modest electrical power requirements, lack of external appendages, and the ability to be installed off-center if necessary. It features computerized control and vacuum technology, making it a modern and practical anti-roll gyro solution.