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
Blackfriars Ships bronze arm of a pair of shears, two larger lead weights, and an iron grapnel. As with the other Blackfriars ships, these two appear to have been used to carry and transport building supplies. The Blackfriars III ship is the most complete medieval sailing ship to be discovered in Britain. It was a sailing ship built around 1400 and was approximately long, wide and high. Marsden believed the ship to resemble a river vessel known as a "shout". The Blackfriars IV was a clinker-built vessel, built around the 15th century. The vessel was estimated to be very small, only wide.