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
NOAA ships and aircraft whether the vessel is a research ship (R) or survey ship (S), followed by a three-digit number. Each hull classification symbol is unique among NOAA ships currently in commission, although in some cases NOAA uses a hull classification symbol identical to one it used previously for a ship that it has since decommissioned. NOAA ships and aircraft The National Oceanic and Atmospheric Administration Office of Marine and Aviation Operations (OMAO) operates a wide variety of specialized aircraft and ships to complete NOAA's environmental and scientific missions. OMAO also manages the NOAA Small Boat Program and the NOAA Diving Program, the