In March 1909 there was only the steel for the keel. Other materials weren't added until the hull was more complete.
Laid down - 31st March 1909 and launched - 31st May 1911.
Laid down: 31 March 1909 Launched: 31 May 1911
The keel was laid down 31 march in 1909 and was ready for launch 31 may in 1911
March 1909
The plan of building the Titanic was accepted in 1908 (september 17). It was started in May 31 1909 and finished in 1911, March 31.
If you mean the Titanic the liner that sank in 1912 it was not invented it was built at Harland and Wolffs shipyard in Belfast. It was started on 31st March 1909 and took 3 years to build and fit out.
Titanic's workforce was about fifteen-thousand workers with many more offsite. The keel was laid in March 1909 and her sailing was April 1912.
31st March 1909
The Titanic was built between March 1909 and May 1911 .Titanic's keel was laid in 1909 and she was completed for her maiden voyage on April 10th, 1912.
It took three full years to construct the Titanic, from March 1909 to March 1912.
The first piece of steel was laid down for the keel of Titanic on March 31st, 1909.
the Titanic was built in 1909 until 1911