Royal Caribbean's Allure of the Seas had a delayed completion of its dry dock in Spain due to a propulsion issue.

Installed power onboard relates to the efficiency of hull, propulsion system and power ... the podpropulsion. Pod-propulsion is an industry standard today in passenger cruise ships and has been ...

The steering unit uses slewing gears and is located in the hull above the pod itself. Lubrication equipment and ventilation/cooling units are usually located externally, as sub systems.