What types of devices are considered propulsion systems other than traditional propellers?

Jet drives and pump jets are alternative propulsion systems that utilize water jet propulsion instead of traditional propellers. These systems operate by drawing water into a pump and forcing it out through a nozzle, generating thrust. This method allows for greater maneuverability and faster response times, particularly in shallow water where traditional propellers may pose risks or be less effective. Jet drives and pump jets are common in a variety of watercraft, including fast boats and personal watercraft, making them an important consideration in boating safety education.

The other options do not relate to propulsion systems; sensors and alarms are safety devices, anchors and moorings are used for securing vessels, and wakeboards and skimboards are recreational equipment. Understanding the various types of propulsion systems enhances knowledge of vessel operation and safety techniques on the water.