Stabilizer (ship)

（重定向自Gyrostabiliser）

Location and diagram of retractable fin stabilizers on a ship.

Ship stabilizers: a fixed fin stabilizer (foreground centre) and bilge keels (left background).

Two 25 ton gyroscopes installed on the USS Henderson transport during construction in 1917, the first large ship to be gyroscopically stabilized.

Ship stabilizers are fins or rotors mounted beneath the waterline and emerging laterally from the hull to reduce a ship's roll due to wind or waves. Active fins are controlled by a gyroscopic control system. When the gyroscope senses the ship roll, it changes the fins' angle of attack to exert force to counteract the roll. Fixed fins and bilge keels do not move; they reduce roll by hydrodynamic drag exerted when the ship rolls. Stabilizers are mostly used on ocean-going (blue water) ships.

单词	Gyrostabiliser
释义	Gyrostabiliser 英语百科 Stabilizer (ship) （重定向自Gyrostabiliser） Ship stabilizers are fins or rotors mounted beneath the waterline and emerging laterally from the hull to reduce a ship's roll due to wind or waves. Active fins are controlled by a gyroscopic control system. When the gyroscope senses the ship roll, it changes the fins' angle of attack to exert force to counteract the roll. Fixed fins and bilge keels do not move; they reduce roll by hydrodynamic drag exerted when the ship rolls. Stabilizers are mostly used on ocean-going (blue water) ships.
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