Precious photos of the Titanic tragedy

The photo was taken on May 31, 1911, showing that the Titanic had three copper rotors, weighing 38 tons and nearly 7 meters in diameter. This is one of the 5,500 artifacts in the Titanic Collection auctioned by Guerney to commemorate a century of shipwrecks. (Photo: AP)

Harland and Wolff Shipbuilding, located in Belfast, Northern Ireland, the birthplace of the Titanic, has produced the world's largest steam engines and anchors. These engines are as big as a 3-storey building. The backbone of the ship is completed first, then the steel frame is fixed by rivets to form the hull. (Photo: RMS Titanic, Inc)

In May 1911, the Titanic luxury ship was completed after three years at Harland and Wolff Shipyard, one of the largest inland ports in the world. The ship then cost $ 7.5 million. (Photo: AP)

Titanic is one of three ships that are expected to form the most spectacular royal ships ever produced. These ships include the Olympic, Titanic and Gigantic ships, later named Britannic. This "super-train" group is expected to be a tool to help White Star Line manufacturer avoid falling into the hands of competitors. These large ships can carry many tourists across the Atlantic and their luxury compartments will attract many wealthy tourists. (Photo: RMS Titanic, Inc)

These are the first ships to have swimming pools, gyms and ball courts on the deck. The second class of these ships is also more luxuriously decorated than the contemporaries. Photo taken in 1912. (Photo: RMS Titanic, Inc)

The tourists of the surviving Titanic are on their way to the SS Carpathia, the ship arrives to aid Titanic after being informed of the accident. Of the 2,208 passengers, 1,496 people died. Most of them did not overcome the cold when floating in the ocean. (Photo: Library of Congress)

The iceberg sank Titanic from the SS Carpathia. The sinking tragedy has caused manufacturers to reform many regulations, including regulations on lifeboats and 24-hour radio systems on all ships, as well as the establishment of ice patrol teams. international. (Photo: Library of Congress)

A lifeboat carrying passengers leaves Titanic when the ship is sinking. J. Bruce Ismay, director of the company that owns the ship, also survived by having a place on the lifeboat. (Photo: RMS Titanic, Inc)

Sailor Frederick Fleet is one of the lucky ones to escape. (Photo: Library of Congress)

A first-class family survived the Titanic disaster. The first-class compartment is the one with the highest percentage of survivors in the compartments with 53%. Meanwhile, only 22% of third-class passengers escape. (Photo: Library of Congress)

Photo taken on the Carpathia. The first relief ship was present around 4:10 am, almost two hours after the last lifeboat left the sunken ship. (Photo: Library of Congress)

Margaret Brown, wife of millionaire James Joseph Brown, was praised for actively supporting the evacuation of passengers on board and seeking to bring her lifeboat back to pick up more victims. (Photo: Library of Congress)

The photo taken on May 29, 1912 shows Brown giving a trophy to Captain Arthur Henry Rostron, the Carpathia captain, for his contributions to Titanic's evacuation. (Photo: Library of Congress)

The crowd is waiting for the survivors to return from Titanic. (Photo: Library of Congress)

Medals presented to Captain Rostron. (Photo: Library of Congress)

The letter was written on April 15, 1912, by Captain Rostron in response to a call for help from Titanic. (Photo: Library of Congress)

The boys selling newspapers walking in the hands of newspapers with the front page have bold headlines about the Titanic disaster. (Photo: RMS Titanic, Inc)

The Titanic wreck "rests" at a depth of 4,000m at the bottom of the Atlantic Ocean. (Photo: AP)