Beautiful song. Couldn't find it online so had a crack at it myself.
Hope this helps!
Standard tuning.
No capo.

[Intro]
B F# C# F#

[Verse]
   B      F#
I set my sails
        B                          F#
And betrothed, the wind will guide me
         B                    F#
To draw upon the North East shore
                   C#
Of the emerald island
   B    F#
County Down
        B    F#
Where Bangor town
     B              F#
Is now and forever calling
      B               F#
And recalls me by the shore
             C#
At peace, in Silence

[Chorus]
B                 C#        F#
I sit down by the water and I 
C#
Glory at my host
        D#m           C#        B
Let the rivers roll over like lovers
                 C#         F#
Oh brothers and sisters and I
B
Good lord you know we need it most
    C#                                    F#         B
Our minds are tethered but our hearts are wild
           F#     C#
In Bangor town
    F#       B  F#
County Down

C# B F#

[Verse]
     B     F#
Let joys abound
          B              F#
Back in Fealty’s bar on High Street
             B               F#            C#
Where we’ll raise a glass to all a fair tomorrow
B          F#   
We’ll be found 
 B           F#
Amidst the sound
        B             F#
Of our laughter ever roaring
        B                   F#
As we drink our fill where once
                C#
We drowned our sorrows

[Chorus]
B                 C#        F#
I sit down by the water and I 
C#
Glory at my host
        D#m           C#        B
Let the rivers roll over like lovers
                 C#         F#
Oh brothers and sisters and I
B
Good lord you know we need it most
    C#                                     F#         B
Our minds are tethered but our hearts are wild
           F#     C#
In Bangor town
    F#       B  F#
County Down

C# B F#

[Verse]
           B      F#
And where Jerry wails
         B                 F#
Writing signs outside the Helmsman
  B                F#            C#
Beware you passers by what lays inside there
       B     F#
Oh he testified
    B     F#            
And Julie cried
    B              F#
Reminiscing on her story
   B                F#           C#
Surrounded once by glory now by violence

[Chorus]
B                 C#        F#
I sit down by the water and I 
C#
Glory at my host
        D#m           C#        B
Let the rivers roll over like lovers
                 C#         F#
Oh brothers and sisters and I
B
Good lord you know we need it most
    C#                                     F#         B
Our minds are tethered but our hearts are wild
           F#     C#
In Bangor town
    F#       B  F#
County Down

C# B F#

来源：www.ultimate-guitar.com