|  Specifications

Application Seakeeper's new M21000 gyro is perfect for larger yachts and vessels. Able to actively stabilize most vessels with displacements up to 90 tons, the M21000 is the perfect choice for discerning owners wanting a complete stabilization system that works equally well at zero-speed and at anchor and also while underway. For larger vessels, multiple units can be installed to achieve the desired stability characteristics. Performance Resonant boat roll is the most disorienting contrast with dry land experience and the least desirable motion on a boat. Uncomfortable, tiring, and probably the greatest cause of seasickness, it has been an unavoidable price to pay for many for the pleasure of being on the water. Employing the principles of gyro-dynamics, Seakeeper vacuum-sealed gyro stabilizers exert a powerful righting torque that virtually eliminates boat roll without any need for drag-producing or damage-prone protrusions or appendages from the hull. Seakeeper's unique state-of-the-art motion control system actively regulates the hydraulic braking system to ensure the anti-roll torque is maximized for all hull designs and for the ever-changing operating and sea conditions. Electrical The builder is responsible for supplying 185-240 VAC, 50/60 Hz, single phase power on a 30 Amp service to the Motor Drive Box and 24 VDC on a 10 Amp service to the Control Box. Cooling The Gyro bearings and Motor Drive Box are cooled by a closed glycol cooling loop that incorporates a sea water heat exchanger. The builder is responsible for providing 15.1 lpm raw water at ambient sea temperature and 6.9 Bar maximum pressure to this heat exchanger. The ambient air temperature in the compartment in which the Gyro and Motor Drive Box are mounted should not exceed 50 C. Loads The boat builder or yard is responsible for designing the foundation to which the Gyro's saddle beams are attached and for ensuring that this foundation can safely transfer the concentrated Gyro loads from the saddle beams to the adjacent hull structure. Safety The brake system automatically locks the Gyro so it cannot generate excessive anti-rolling torque loads in the event of a system fault or alarm, loss of electrical power or loss of brake pressure. The brake system can also be locked from the Keypad or by shutting off power at the circuit breaker.

Location The Gyro is a torque device and therefore does not have to be installed at a specific forward or aft location or on the centerline. However, the Gyro should not be installed at forward locations in a high speed boat where the vertical accelerations exceed ±1 G (0 to 2G range). Controls A Keypad and small Display are provided to start, operate, monitor and shutdown the Gyro. Monitoring Sensors, alarms and shutdowns are provided to allow unattended operation. Sensors measure flywheel bearing temperatures, vacuum pressure, motor and drive temperatures, gimbal angle, brake pressure, and ship motion. The Gyro controller sends sensor values and alarm information to the display and also locks the brake and shuts down the motor drive in the event of a fault or alarm condition Gyro operating history during faults or alarms is recorded in the controller's memory for subsequent recall by a qualified service person if needed.     + Download detailed drawings here

* Seakeeper Reserves the Right to Modify These Specifications and Information on the Referenced Drawings *

Model 21000 Gyro
Rated Speed	4,000 RPM
Angular Momentum at Rated RPM	21,000 N-M-S
Anti-Rolling Torque at Rated RPM	45,000 N-M
Spool-up Time to Rated RPM	45 Minutes
Spool-up Time to Stabilization (70% Rated RPM)	30 Minutes
Spool-up Power AC Motor DC Control	3000 Watts 240 Watts
Operating Power AC Motor (sea state dependent) DC Control AC Input Voltage DC Input Voltage	1000-3000 Watts 240 Watts 208-230 VAC (+/- 10%), 50/60 Hz Single Phase 24 VDC @ 10 Amps
Sea Water Supply to Heat Exchanger	15.1 liters/min (4 gal/min)
Maximum Ambient Air Temperature	60 Deg C (140 Deg F)
Weight	1320 Kg (2900 Lbs)
Gyro Envelope Dimensions	1.28 length x 1.42 wide x 0.94 height - Meters 50.2 length x 55.7 width x 36.8 height - Inches