Marine adjustable paddle energy-saving device

The utility model provides a marine adjustable propeller energy-saving device. The marine adjustable propeller energy-saving device comprises a measuring device, a propeller rotating speed and pitch adjusting instrument, a mode switching instrument and monitoring equipment, the measuring device is installed on an adjustable propeller tail shaft of a ship. The propeller rotating speed and pitch adjusting instrument and the monitoring equipment are mounted in a central control room of the ship; the mode switching instrument is mounted on a navigation bridge of a ship; the mode switching instrument comprises an energy-saving mode and a normal operation mode; the normal operation mode can be switched to the energy-saving mode according to the ship operation state when the energy-saving operation condition is met; and communication interfaces of the measuring device, the propeller rotating speed and pitch adjusting instrument, the mode switching instrument and the monitoring equipment are respectively connected wi