Can't find the name just yet, but it is from The Hunt For Red October soundtrack.
Edit: Appears to be Basil Poledouris - The Hymn for Red October. Based on http://www.youtube.com/watch?v=rPsL2WVhFCc (about 2.39 in)
Nope, it's the from the album "1492: Conquest of Paradise" by Vangelis, song is "Conquest of Paradise".