What are the benefits of a propulsion pod to a captain of a ship?

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Most ships are equipped with a propeller at the stern to provide
propulsion. The ship is steered using a rudder. Much time and distance
are needed for a big ship to complete a turn when using the rudder.
Some ships are equipped with bow thrusters (special propellers
installed below the waterline at the front of the ship). The bow thrusters
allow the bow (the front) of the ship move as well. However, even a
ship with a rudder and bow thrusters has trouble maneuvering. So, in
confi ned spaces such a port, tugs guide the ships. A ship equipped with
propulsion pods has an advantage: The pods can be rotated through 360
degrees to provide propulsion and steering. With propulsion pods, large
ships can be easily steered and maneuvered in a port or when docking.

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