What is the name of the ship in 'Death on the Nile'?

The ship in Agatha Christie's Death on the Nile is the S.S. Karnak. In the novel, the Karnak carries a group of wealthy travellers along the Nile, creating the enclosed setting in which Linnet Ridgeway is murdered during a luxury cruise.

The ship's name connects the story to ancient Egyptian history. Karnak was a major temple complex at ancient Thebes, near modern-day Luxor, and is one of Egypt's most important archaeological sites. The setting gives Christie a dramatic backdrop of temples, monuments and river landscapes while keeping the suspects together and limiting the possible movements of the killer.

The S.S. Karnak is fictional, although real steamers and tourist boats travelled the Nile during the period in which the story is set. Readers sometimes confuse it with the S.S. Sudan, a real historic Nile vessel used in later screen adaptations and associated with the novel in tourism and popular culture. The Karnak also appears in film versions, but the ship's design and name have been interpreted differently across adaptations.