Diesel-Electric Propulsion is widely used in large ships due to its efficiency, reliability, and ability to operate on various fuel types.

The propeller's primary function is to convert rotational motion into thrust, propelling the vessel through the water.

Gas Turbine Propulsion offers a high power-to-weight ratio, making it suitable for high-speed vessels where weight is a critical factor.

The gearbox's primary function is to transmit power from the engine to the propeller, allowing for efficient power transfer.

Nuclear Propulsion is commonly used in submarines due to its ability to provide long-term underwater operation without the need for frequent refueling.

Controllable-pitch propellers allow for efficient maneuvering and rapid changes in vessel direction.

Outboard Motor Propulsion is widely used in small boats and recreational vessels due to its simplicity, portability, and ease of maintenance.

The stern tube's primary function is to provide support and alignment for the propeller shaft.

Electric Propulsion offers low emissions and is suitable for environmentally sensitive areas, as it does not produce direct exhaust gases.

The rudder's primary function is to control the vessel's direction by directing the flow of water around the hull.

Combined Diesel-Electric and Gas Turbine Propulsion offers high efficiency and flexibility, making it suitable for large container ships.

Water-jet propulsion systems provide excellent maneuverability due to their ability to direct the water flow in different directions.

Surface-Effect Ship Propulsion is often used in high-speed ferries and racing boats due to its ability to reduce drag and improve speed.

A Kort nozzle is designed to increase propeller efficiency by reducing energy losses and improving the flow of water around the propeller.

Paddlewheel Propulsion is commonly used in shallow waters and is suitable for riverboats and dredgers due to its ability to generate thrust without the need for deep draft.