Editing Propeller (section)

=== Shaftless ===
{{Main|Rim-driven thruster}}
A rim-driven thruster integrates an electric motor into a ducted propeller. The cylindrical duct acts as the stator, while the tips of the blades act as the rotor. They typically provide high torque and operate at low RPMs, producing less noise. The system does not require a shaft, reducing weight. Units can be placed at various locations around the hull and operated independently, e.g., to aid in maneuvering. The absence of a shaft allows alternative rear hull designs.<ref>{{Cite web |date=July 2017 |title=Are rim-driven propulsors the future? |url=https://www.rina.org.uk/Are_rim-driven_propulsors_the_future.html |access-date=2023-01-29 |website=www.rina.org.uk |archive-date=2022-05-24 |archive-url=https://web.archive.org/web/20220524153614/https://www.rina.org.uk/Are_rim-driven_propulsors_the_future.html |url-status=dead }}</ref>