Hi. I listened to Dougie's recording on YouTube, and I heard a different order to the lyrics there. Also, the video starts on F#m, vs Bm, so I did up an F#m chart with the lyrics in that video, as well as a Bm version. This is not the open tuning others have mentioned.

One of my favorite songs of all time.

Best, Finn.
(Due to formatting issues, not all the chords may be lined up exactly where they belong. Adjust to suit taste)

II am Ready for the Storm (Dougie MacLean) F#m
https://www youtube com/watch?v=VPSDu2y9FD8&list=PL_2w5R3VBeHXFJElZ8z27-weTjP56Ow8v&index=12

    F#m                                                          E
O’ the waves crash in and the tide pulls out. It's an angry sea but there is no doubt
               D                                               C#m
that the lighthouse will keep shining out to warn the lonely sailor.
          F#m                                                            E
The lightning strikes & the wind cuts cold through the sailor's bones, through the sailor's soul
                  D                                    C#m
till there's nothing left that he can hold except the rolling ocean.
       F#m      D                  E                               F#m D                   E                            F#m
And I am ready for the storm, yes sir, ready I am ready for the storm. I'm ready for the storm.

         F#m                                            E
Oh give me mercy for my dreams cause every confrontation seems
    D                                                   C#m
to tell me what it really means to be this lonely sailor.
            F#m                                            E
And when you take me by your side you love me warm, you love me and I
   D                                       C#m
should have realized I had no reason to be frightened.
       F#m       D                E                              F#m D                   E                      F#m
And I am ready for the storm, yes sir, ready I am ready for the storm. I'm ready for the storm

Whistle Solo (Haunting)
F#m//E//D//C#m// F#m//E//D//C#m//

    F#m                                             E
O’ and distance it is no real friend and Time will take its time and
          D                                  C#m
you will find that in the end it brings you me, the lonely sailor.
          F#m                                                            E
And when the sky begins to clear and the sun it melts away my fear
               D                                        C#m
I'll cry a silent weary tear for those that need to love me

      F#m      D                   E                                      F#m D                   E                     F#m
But I am ready for the storm, yes sir, ready I am ready for the storm I'm ready for the storm.

F#m    D                   E                                 F#m D                   E                               F#m
I am ready for the storm, yes sir, ready I am ready for the storm. I'm ready for the storm




I am Ready for the Storm (Dougie MacLean) Bm

    Bm                                                                 A
O’ the waves crash in and the tide pulls out It's an angry sea but there is no doubt
               G                                            F#m
that the lighthouse will keep shining out to warn the lonely sailor.
          Bm                                                            A
The lightning strikes & the wind cuts cold through the sailor's bones, through the sailor's soul
               G                                        F#m
till there's nothing left that he can hold except the rolling ocean.
    Bm         G                A                                      Bm    G             A                            Bm
And I am ready for the storm, yes sir, ready I am ready for the storm. I'm ready for the storm.

    Bm                                             A
Oh give me mercy for my dreams cause every confrontation seems
          G                                  F#m
to tell me what it really means to be this lonely sailor
          Bm                                          A
and when you take me by your side you love me warm, you love me and I
          G                                A
should have realized I had no reason to be frightened
    Bm    G                      A                       Bm    G                   A                              Bm
And I am ready for the storm, yes sir, ready I am ready for the storm. I'm ready for the storm.

Whistle Solo (Haunting)
Bm//A//G//F#m// Bm//A//G//F#m//

    Bm                                            A
O’ and distance it is no real friend and Time will take its time and
          G                                            F#m
you will find that in the end it brings you me, the lonely sailor
          Bm                                            A
and when the sky begins to clear and the sun it melts away my fear
       G                                          A
I'll cry a silent weary tear for those that need to love me

    Bm    G             A                             Bm    G             A                                          Bm
But I am ready for the storm, yes sir, ready I am ready for the storm. I'm ready for the storm

    Bm    G             A                             Bm    G             A                                    Bm
I am ready for the storm, yes sir, ready I am ready for the storm. I'm ready for the storm

Dougie MacLean – Key in this video is F#m tho, I think
https://www youtube com/watch?v=VPSDu2y9FD8&list=PL_2w5R3VBeHXFJElZ8z27-weTjP56Ow8v&index=12