SMARTGYRO SG20

The Smartgyro SG20 gyroscopic boat stabilization system is designed to minimize roll in boats ranging from 45 to 55 feet. Engineered to operate on 12-volt DC or 115/220-volt AC power, the system weighs 1,091 pounds and will spool up to stabilization speed in 25 minutes. A modular mechanical design negates the need to remove the entire system for repairs. Intended for both new boats and retrofits, it measures 29.9-by-30.3-by-25.6 inches. $43,690, excluding installation; smartgyro.com