The Titanic struck an iceberg and sank during its maiden voyage in 1912. Scrutiny of lifesaving equipment and communication arrangements helped drive the development of maritime safety rules. Many factors affected the survival chances of passengers and crew. Research into the disaster rests on investigations, testimony, and the wreck, rather than simply repeating scenes from films.
Lifeboats
Like Olympic, Titanic carried a total of 20 lifeboats: 14 standard wooden Harland and Wolff lifeboats with a capacity of 65 people each and four Engelhardt "collapsible" (wooden bottom, collapsible canvas sides) lifeboats (identified as A to D) with a capacity of 47 people each. In addition, Titanic had two emergency cutters with a capacity of 40 people each. Olympic carried at least two collapsible boats on either side of the number one funnel. All of the lifeboats were stowed securely on the boat deck and, except for collapsible lifeboats A and B, connected to davits by ropes. Those on the starboard side were odd-numbered 1–15 from bow to stern, while those on the port side were even-numbered 2–16 from bow to stern.
Both cutters were kept swung out, hanging from the davits, ready for immediate use, while collapsible lifeboats C and D were stowed on the boat deck (connected to davits) immediately inboard of boats 1 and 2 respectively. A and B were stored on the roof of the officers' quarters, on either side of number 1 funnel. There were no davits to lower them and their weight would make them difficult to launch by hand. Each boat carried (among other things) food, water, blankets, and a spare life belt.
Sinking
At 11:40 pm (ship's time) on 14 April, lookout Frederick Fleet spotted an iceberg immediately ahead of Titanic and alerted the bridge. First Officer William Murdoch ordered the ship to be steered around the iceberg and the engines to be stopped, but it was too late. The starboard side of Titanic struck the iceberg, creating a series of holes below the waterline. The hull was not punctured, but rather dented such that the steel plates of the hull buckled and separated, allowing water to rush in. Five of the sixteen watertight compartments were heavily breached and a sixth was slightly compromised. It soon became clear that Titanic would sink, as the ship could not remain afloat with more than four compartments flooded. Titanic began sinking bow-first, with water spilling from compartment to compartment over the top of each watertight bulkhead as the ship's angle in the water became steeper.
Those aboard Titanic were ill-prepared for such an emergency. In accordance with accepted practices of the time, as ships were seen as largely unsinkable and lifeboats were intended to transfer passengers to nearby rescue vessels, Titanic only had enough lifeboats to carry about half of those on board; if the ship had carried the full complement of about 3,339 passengers and crew, only about a third could have been accommodated in the lifeboats. The crew had not been trained adequately in carrying out an evacuation.
Investigations into the disaster
Even before the survivors arrived in New York, investigations were being planned to discover what had happened, and what could be done to prevent a recurrence. Inquiries were held in both the United States and the United Kingdom, the former more robustly critical of traditions and practices, and scathing of the failures involved, and the latter broadly more technical and expert-orientated.
The US Senate's inquiry into the disaster was initiated on 19 April, a day after Carpathia arrived in New York. The chairman, Senator William Alden Smith, wanted to gather accounts from passengers and crew while the events were still fresh in their minds. Smith also needed to subpoena all surviving British passengers and crew while they were still on American soil, which prevented them from returning to the UK before the American inquiry was completed on 25 May. The British press condemned Smith as an opportunist, insensitively forcing an inquiry as a means of gaining political prestige and seizing "his moment to stand on the world stage".