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 made her operation increasingly unprofitable. "Olympic" was the largest ocean liner in the world for two periods during 1911–13, interrupted only by the brief tenure of the slightly larger (which had the same dimensions but higher gross tonnage owing to revised interior configurations), before she was then surpassed by . "Olympic" also retained the title of the largest British-built liner until was launched in 1934, interrupted only by the short careers of her slightly larger sister ships. The "Olympic" was withdrawn from service and sold for scrap in 1935; demolition was completed in 1937. Decorative elements of "Olympic" were removed