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 York on "Olympic" on 21 July 1920 on the same voyage on which Douglas Fairbanks and Mary Pickford were celebrating their honeymoon. One of the attractions of "Olympic" was the fact that she was nearly identical to "Titanic", and many passengers sailed on "Olympic" as a way of vicariously experiencing the voyage of "Olympic"s sister ship. On 22 March 1924, "Olympic" was involved in another collision with a ship, this time at New York. As "Olympic" was reversing from her berth at New York harbour, her stern collided with the smaller liner "Fort St George", which had crossed into her