That isn't the same LP. I know of that Roberts & Barrand album, and I also have another CD album titled "Across the Western Ocean", being a collection of songs of Liverpool and the sea, by various artistes. It seems to be a popular title for a CD! The track listing for the Zara & Bob album is:

1. Across the Western Ocean (Trad)
2. Crazy Man Michael (Richard Thompson & Dave Swarbrick)
3. It Ain't Me Babe (Bob Dylan)
4. Song of the Whale (Eric Bogle)
5. ? A Rancher's Life (? Trad)
6. Genesis 1 Verse 20 (Ralph McTell)
7. ? Pagan Song (?)
8. Don't Think Twice, It's All Right (Bob Dylan)
9. Landslide (Stevie Nicks)
10. There But For Fortune (Phil Ochs)
11. Affairs of the Heart (Ralph McTell)

Thanks for your interest and help!