There are several different tunes with the title Sail Away, including one by Tom Harrell and one by Randy Newman.

This predates those. Coward wrote it in 1951 for a musical revue, then revived it as the title song in his 1961 musical of the same name.

There are several versions on YouTube, none of which I like very much, except for Coward's own, which is not remotely jazzy. I recommend his singing of it for its lyrics, which are typically witty.
https://www.youtube.com/watch?v=w2m05uOvDP8

I've reharmonized it to makes its rather bland changes more interesting and omitted the verse.

Sail Away (Coward)-Rev JE - Noel Coward

Cheers,
Jer