Leslie Nielsen was 45 in The Poseidon Adventure when he played the character 'Captain Harrison'.
That was over 51 years ago in 1972.
In 2010 he died aged 84, starring in 123 films in his career, 84 of those after The Poseidon Adventure was first released. If he were alive today he would be 98.
In The Poseidon Adventure, I think Leslie Nielsen looks: