 "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 title of largest British-built ship until her own sinking in November 1916.After this "Olympic" would enjoy the title for 20 years until the commissioning of in 1936.