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
Scimitar-class patrol vessel Scimitar-class patrol vessel The "Scimitar" class is a class of fast patrol boat in service with the British Royal Navy. The two vessels of this class are of a commercial design known as the Lifespan Patrol Vessel built by Halmatic (now BAE Systems Surface Ships), and formerly served in an inshore waterways anti-terrorist role in Northern Ireland. They were acquired for the Royal Navy in 2003 for service with the Gibraltar Squadron, releasing two boats that had filled this role for service with the Cyprus Squadron. With the decommissioning of the survey launch in 2018, the two "Scimitar"-class boats are