Why was the Queen Mary retired?

Related questions

1. Did Mary Queen of Scots kill her husband?
2. Why did Queen Elizabeth never marry?
3. Was Queen Mary a good queen?
4. Does the Queen Mary move?
5. When was Queen Mary Queen?
6. What color was Mary Queen of Scots?
7. What happened to the Queen Mary?
8. Who was Queen Mary to Queen Elizabeth?
9. Is Queen Mary bigger than the Titanic?
10. What is there to do at the Queen Mary?

Tags

1. #enemy
2. #failing
3. #beneath
4. #perish
5. #forced
6. #queen
7. #retired
8. #travel
9. #leave
10. #nearby
11. #because
12. #threat
13. #attract
14. #after
15. #popularity
16. #advancements