Lusitanic definitions of "Lusitanic" or "Lusitanian" may include medieval-to-modern Galicia, because the Portuguese people and Galician people share close linguistic and cultural ties, including pre-Roman Celtic ones. Modern Portuguese and the Galician language both derive from medieval Galician-Portuguese, and the term is a cultural classification more than a historic–geographical definition. Although, in Ancient Roman times, the Gallaeci were not part of Lusitania province, what became the Galician-Portuguese language developed from Vulgar Latin in Gallaecia, which comprised what is now Galicia, as well as north Portugal, the center of the development of post-Roman Portuguese culture. Later Portuguese use of the name "Lusitania"
RMS Lusitania Turbines offered the advantages of generating less vibration than the reciprocating engines and greater reliability in operation at high speeds, combined with lower fuel consumption. It was agreed that a trial would be made by fitting turbines to , which was already under construction. The result was a ship faster than her conventionally powered sister with the expected improvements in passenger comfort and operating economy. The ship was designed by Leonard Peskett and built by John Brown and Company of Clydebank, Scotland. The ship's name was taken from Lusitania, an ancient Roman province on the west of Iberian Peninsula, the