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
Olympic-class ocean liner while First Class also featured a lavish Grand Staircase descending in seven levels through the ship, a Georgian-style smoking room, a Veranda Cafe decorated with palm trees, a swimming pool, Turkish bath, gymnasium, and several other places for meals and entertainment. The "Olympic"-class liners were the first British ships to contain separate restaurants independent of the dining saloons. These were in imitation of the precedent set on the German Hamburg-Amerika liner Amerika (1905), which had included a restaurant serving French "haute cuisine" run by the famous hotelier César Ritz. "Olympic" and "Titanic" had À la Carte Restaurants aft on B-Deck