I heard this song the other week on an ancient spinners record in my mums collection. I wanted to play it but have found very little mention of it on the internet so figured out the chords myself. Not sure how good they are but this is what I came up with...

Cm                        Fm      Cm
Snaefell, Tynwald, Ben My Chree
Cm                            Gm          Cm
Fourteen ships had sailed the sea
Cm       F         Dm(?)       Gm
Proudly bearing a Manx name
Cm                            Gm    Cm
But there's one will never again
Fm               Cm               Fm             Cm
Oh Ellan Vannin, of the Isle of Man Company
Fm             Cm                Gm       Cm
Oh Ellan Vannin, lost in the Irish Sea