Which of the following propulsor types represents the proper terminology for a Kort nozzle?

Correct Answer: Option A — Ducted propeller

A Kort nozzle is a stationary, hydrofoil-shaped duct surrounding a propeller. By accelerating the flow into the propeller disk and controlling the discharge, it increases thrust efficiency at low speeds and high loads. This configuration is classified as a ducted propeller system, commonly used on tugs and workboats.