### Instruction: How many sinking ships did Violet Jessop survive? Be precise.
### Input: Violet Constance Jessop (2 October 1887 – 5 May 1971), often referred to as the "Queen of sinking ships" or "Miss Unsinkable," was an Argentine woman of Irish heritage who worked as an ocean liner stewardess, memoirist, and nurse in the early 20th century. Jessop is most well known for having survived the sinking of both the RMS Titanic in 1912 and her sister ship the HMHS Britannic in 1916, as well as having been onboard the eldest of the three sister ships, the RMS Olympic, when it collided with the British warship HMS Hawke in 1911.
### Response: 2.