Seakeeper 8000 GYRO - Page 6

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OPERATION
MANUAL
Product: Document#: Rev: Page:
MODEL8000GYRO 90141 3 2of11
Section1:SYSTEMOVERVIEW
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Seakeeper’s web site at www.seakeeper.com.The Seakeeper web site also contains  videos of gyro
operationandvideosofseveraldifferentboatsoperatinginwaveswiththeModel7000Gyroonandoff.
Itisrecommendedthatthereaderplaythesevideospriortoreadingtheremainderofthismanual.
Thegyro’s gimbalangle andthe gyro’srateof rotation about thegimbal axis(termed precession
rate)
play an important role in its operation.These parameters are illustrated in Figure 2.At zero degree
gimbalangle,thegyroisvertical;itcan  precessamaximumof+/‐60degreesaboutthisposition.The
amount of torque that the gyro exerts on a boat’s hull to cou nter 
the wave induced roll is directly
proportionalto theprecessionrate.The further thegyroisfrom vertical (zerodegrees)thelowerthe
anti‐rolltorque.TheverticalarrowsinFigure2illustratethedir ectionoftheforcesthatthegyroexerts
ontheboat’shulltodamprollmotion.
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FIGURE2–GYROPRECESSION