Olympic-class ocean liner
When "Titanic" sank in 1912 and "Britannic" sank in 1916, their sinkings did not receive the same attention, due to the death toll (1,517 on "Titanic" and 30 on "Britannic"). Because the exact position of the sinking of the "Britannic" is known and the location is shallow, the wreck was discovered relatively easily in 1975. "Titanic", however, drew everyone's attention in 1912. After several attempts, the wreck was finally located by Jean-Louis Michel of Ifremer and Robert Ballard following a top secret mission for the US Navy to investigate the wreckage of two nuclear submarines, USS Thresher (SSN-593) and the USS Scorpion (SSN-589), that sank in the North Atlantic in the 1960s. The discovery of the wreck occurred on 1 September 1985, at 25 kilometres from the position given of the sinking. The wreck lies about 4,000 metres deep, broken in two. The bow is relatively well preserved, but the stern partially imploded, and to a large extent disintegrated during the descent and impact on the seabed.
RMS Atlantic
RMS "Atlantic" was a transatlantic ocean liner of the White Star Line that operated between Liverpool, United Kingdom, and New York City, United States. During the ship's 19th voyage, on 1 April 1873, she struck rocks and sank off the coast of Nova Scotia, Canada, killing at least 535 people. It remained the deadliest civilian maritime disaster in the North Atlantic Ocean until the sinking of on 2 July 1898 and the greatest disaster for the White Star Line prior to the loss of in April 1912.