The trick to this song is staying on top of the triplets when you're strumming.
Some of the chords are transitions so listen for the changes. On the C-Cadd9
change, you just drop your pinky down right before the second G.
Be careful towards the end of the song the chord progressions changes to include an Em
I have chorded the whole song and it should be right.
Enjoy.
G C (Cadd9) G D
I believe submarines
G C (Cadd9) G D
Underneath deep blue seas
G C (Cadd9) G D
Saw the flags: Japanese
G C (Cadd9) G D
No one will believe me
Bridge
Em D
Ran back to the town bar and
G
I told the people how
Em D
I had seen the submarine and
C
Everyone laughed aloud
G C Cadd9 G D
G C Cadd9 G D
G C (Cadd9) G D
I did spy periscopes
G C (Cadd9) G D
Dead of night on the eastern coast
G C (Cadd9) G D
The police made them jokes
G C (Cadd9) G D
Told me I'd seen a ghost
[ Tab from: https://www.guitartabs.cc/tabs/l/lumineers/submarines_crd_ver_2.html ]
Em D G
Everyone thinks I'm a liar No one knows the truth
Em D C
If it was a bigger fire I would be on the roof
G C (Cadd9) Em D
G C (Cadd9) Em D
G C (Cadd9) G D
G C (Cadd9) G D
G C (Cadd9) Em D
Ships will rust in Baldwin Bay (Let me go!)
G C (Cadd9) Em D
No one trusts what I say (I don't know!)
G C (Cadd9) Em D
Oh my God, no one paid (Attention!)
G C (Cadd9) Em D
Overnight my hair turned gray (Oh oh oh!)
Em D G
In the end it boils down to credibility
Em D C
I had none, so I will die with the secrets of the sea
G C (Cadd9) Em D
G C (Cadd9) Em D
Then this chord progression for the rest of it with the rests.
G C (Cadd9) G D
(Submarine! Can't find me! Submarine!)
Submarine...
(Submarine!)