[Owen]

Just Googling the Curacoa incident & at the inquiry they mainly blamed the destroyer for it.
Ahoy - Mac's Web Log - Cunard Liner Queen Mary runs down HMS Curacoa

An official enquiry into this disaster had to wait until after Victory Europe Day in 1945.
The Commissioners of the Admiralty sued Cunard White Star Line, alleging that Queen Mary was responsible for the accident.
One of the officers to survive, was Captain John Boutwood, who commanded Curacao, he emerged from an Admiralty inquiry acquitted without any reprimand. But, in court, the Judge held the Cruiser responsible, saying that: "Although the rules of the road at sea indicate that the overtaking vessel is to keep clear of the other, in this case, it did not apply."
He judged that the Cruiser could have avoided the collision, even up to seconds before the impact.
The Admiralty appealed this judgement, and this time, blame, was shared 1/3 to Queen Mary, 2/3 to Curacoa, once again the Admiralty were not happy, and the case went before the House of Lords, where the Appeal Court's decision was upheld.

Casualty list here.
Royal Navy casualties, killed and died, October 1942