https://www.rolls-royce.com/products-and-services/marine-archived/product-finder/propulsors/azimuthing-thrusters/azimuth-permanent-magnet.aspx
Azimuthing permanent magnet thruster (AZ-PM)
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https://www.rolls-royce.com/products-and-services/marine-archived/product-finder/propulsors/azimuthing-thrusters/swing-up-tcns-c-azimuthing-thruster.aspx
Swing-up TCNS/C azimuthing thruster
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