Seakeeper 7000 GYRO User manual

DOCUMENT # 90021, REV 4
MAR 2009
MODEL 7000 GYRO
OPERATION MANUAL
P.O. BOX 999
14528 SOUTH SOLOMONS ISLAND ROAD.
SOLOMONS, MARYLAND, 20688, U.S.A
PHONE: [phone]
FAX: [phone]
E-MAIL: [e-mail]

DOCUMENT # 90021, REV 4
MODEL 7000 GYRO
OPERATION MANUAL
MAR09
Contents:
Section 1 – System Overview
Section 2 – System Operation
Section 3 – Power Failures, Alarms, and Troubleshooting
Section 4 – Maintenance
Section 5 – Warranty, Limit of Liability, Property Rights
Appendix A – Model 7000 Gyro Specs and Summary
Appendix B – Technical Drawings
P.O. BOX 999
14528 SOUTH SOLOMONS ISLAND ROAD.
SOLOMONS, MARYLAND, 20688, U.S.A
PHONE: [phone]
FAX: [phone]
E-MAIL: customer[email protected]om

DOCUMENT # 90021, REV 4
MAR 2009
MODEL 7000 GYRO
OPERATION MANUAL
SECTION 1 SYSTEM OVERVIEW
P.O. BOX 999
14528 SOUTH SOLOMONS ISLAND ROAD.
SOLOMONS, MARYLAND, 20688, U.S.A
PHONE: [phone]
FAX: [phone]
E-MAIL: [e-mail]

DOCUMENT # 90021, REV 4 MODEL 7000 GYRO OPERATION MANUAL-MAR09
Page 2of 10
1SYSTEM OVERVIEW
The Seakeeper Model 7000 Gyro uses gyroscopic principals to reduce boat roll motions in waves
and wakes independent of boat speed. One Model 7000 Gyro will reduce the roll motions of a
boat that displaces 15 to 25 tons. Boats with higher displacement typically require multiple gyros
to provide good roll reduction. In multiple gyro installations, the gyros operate independent of
each other and therefore this manual only discusses operation of a single unit.
A Model 7000 Gyro consists of a gyro assembly, gyro control junction box, motor drive junction
box, network connection boxes (2), and operator display and keypad. The following pictorial
diagram illustrates the interconnection of these components and their interface with the boat.

DOCUMENT # 90021, REV 4 MODEL 7000 GYRO OPERATION MANUAL-MAR09
Page 3of 10
Technical specifications provided in Appendix A list the power consumption, total weight, and
dimensions of the major components. Gyroscopic principals that apply to boat roll control are
discussed on 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 the following
figures. 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 counter
the wave induced roll is directly proportional to the precession rate and the trigonometric sine of
the gimbal angle. The further the gyro is from vertical (zero degrees) the lower the anti-roll
torque. Blue arrows in the figures illustrate the direction of the forces that the gyro’s exerts on the
boat’s hull to damp roll motion.