An asterisk indicates I've knowingly reharmonized the chord in some way from the original, most likely to make it flow more nicely for solo fingerstyle guitar. Watch the video for fingerings. If it doesn't have an asterisk, I believe it should be the same chord as the original (or at least very close).

Video: https://youtu.be/9PoJ52RDH2M

!!! all chord names relative to capo 3 !!!

Intro:
Em   D#dim   Em   D#dim   Em   D#dim   Em   D#dim

Em      G        Am        G
Hear, o gods, my desperate plea
   F      Em   B7     Em
To see my love beside me

Em   D#dim   Em   D#dim

Em     G       Am     G
Sunk below the mortal sea
    F      Em     B7   Em
Her anchor weighs upon me
Em         G      Am   G
Fasten her tether unto me
     F       Em      B7   Em
That she may rise to sail free

[move 'E' chord shape, with a drone B string. forget the fancy chord names, I play 24430X, 35540X, 57760X]
F#add11*  G*   Aadd9*  
Don't              

G*         F#add11* G* Aadd9* D7/6* (spicy!)
Don't look back

Em   D#dim   Em   D#dim

Em    G           Am           G
Close enough that light we can see
   F       Em        B7        Em
My doubt betrays the better of me
  Em            G        Am           G
A glance to the stern is all it would be
     F         Em          B7    Em
That anguished shade shall haunt me

F#add11*  G*   Aadd9*  
Ehhhhh        -ehhhhhhh

G*   F#add11*  G* Aadd9*  D7/6* (so spicy!)
Ever on

Em F#7
Calm
Dmaj7* D6*
Seas

C#m7b5  G6#11* Bmb6*
Winds   a     -lee

Bm  C#m D   Em       F#7 Dmaj7* D6*
But now the squall's up -on     us
      C#m75b  Edim7    D7/6*
We're foun   -der     -ing

D7/6*           Em   D#dim   Em   D#dim
Drowniiiiiii ...iiiiiiiiiiiiiii...ing

Em   D#dim   Em   D#dim, etc.
Don't look back x 5