Here's a shell of the song until someone can come up with a more advanced tab.  The 
is as follows (with the strongest emphasis on beat 2):

Beat:  1 2 3 4 1 2 3 4
Strum: x X  xxxx X  xxx


Have fun!  :)


  Am
A voice is on the wind
   Dm
It calls me further in
    Am             C         G
I'm heading deeper into your heart
     Am
Your mark is on my chest
   Dm
My sails filled with your breath
    Am              C            G
You guide me by the light of the stars


                 F                     C
I'm sailing on a ship that's bound for life
                   F                C
I wrestle with the wind against the tide
                 F                 Am
I leave it all behind to reach for more
            G                 Am
I'm sailing on to your golden shore


       Am
Though skies go blue to grey
        Dm
And I'm thrown from wave to wave
    Am                    C             G
You still will hear these lungs singing hard
     Am
With every storm I face
  Dm
I find a greater grace
     Am              C         G
That pulls me deeper into your heart


                 F                     C
I'm sailing on a ship that's bound for life
                   F                C
I wrestle with the wind against the tide
                 F                 Am
I leave it all behind to reach for more
            G
I'm sailing on
                     F                 C
To where the water's running sweet and bright
                  F              C
The sun is rising in the eastern sky
                 F                 Am
I leave it all behind to reach for more
            G                 Am
I'm sailing on to your golden shore