Olympic-class ocean liner of 29 coal-fired steam boilers in six compartments. However, "Olympic"s boilers were adapted for firing by oil at the end of the First World War, which reduced the number of engine crew required from 350 to 60. The "Olympic"-class ships were long, displacing normally (their draft at this displacement being ), and their tonnage was around 45-46,000 GRT. "Olympic" became the largest ship in the world when it was completed in May, 1911 before losing the title to its sister "Titanic" when she was completed in April, 1912. After the loss of "Titanic" the third sister ship "Britannic" claimed the
RMS Olympic and technical facilities were largely identical to those of her more famous sister "Titanic", although with some small variations. The first-class passengers enjoyed luxurious cabins, and some were equipped with private bathrooms. First-class passengers could have meals in the ship's large and luxurious dining saloon or in the more intimate A La Carte Restaurant. There was a lavish Grand Staircase, built only for the "Olympic"-class ships, along with three lifts that ran behind the staircase down to E deck, a Georgian-style smoking room, a Veranda Café decorated with palm trees, a swimming pool, Turkish bath, gymnasium, and several other places