Which term describes an engine arrangement where the propulsion unit is mounted on the transom and the engine stays inside the hull?

Which term describes an engine arrangement where the propulsion unit is mounted on the transom and the engine stays inside the hull?

• A. Outboard Engine
• B. Inboard Engine
• C. Stern Drive Engine
• D. Water Jet Pump Engine

Answer: (C)

This arrangement is known as a stern drive (also called inboard/outboard drive). The propulsion unit, which includes the lower gearcase and propeller, is mounted on the transom of the boat, while the engine itself stays inside the hull. A driveshaft connects the engine to the stern-mounted unit, allowing the operator to steer and shift gears from inside the boat. This is different from an outboard engine, where the entire engine and propeller are a single unit mounted on the transom outside the hull. It’s also not an inboard engine, where both engine and propeller shaft are located inside the hull with a shaft passing through the hull to the propeller. Water jet propulsion uses a jet pump instead of a propeller with a lower unit, so it doesn’t match the described setup.

This arrangement is known as a stern drive (also called inboard/outboard drive). The propulsion unit, which includes the lower gearcase and propeller, is mounted on the transom of the boat, while the engine itself stays inside the hull. A driveshaft connects the engine to the stern-mounted unit, allowing the operator to steer and shift gears from inside the boat. This is different from an outboard engine, where the entire engine and propeller are a single unit mounted on the transom outside the hull. It’s also not an inboard engine, where both engine and propeller shaft are located inside the hull with a shaft passing through the hull to the propeller. Water jet propulsion uses a jet pump instead of a propeller with a lower unit, so it doesn’t match the described setup.