The basic chord shapes for the intro, outro and verse are D, G and A, with
the bass note moving around while the rest of the chord stays the same.
Thanks to Josh for this beauty.

       h = hammer on

       Here's the intro/verse:

      D                                    G
e-------2---------2---------2---------2-----------3---------3-----------3---|
b-----3---3-----3---3-----3---3-----3---3-------3---3-----3---3-------3---3-|
G---2---------2---------2---------2-----------0---------0-----------0-------|
D-0-------------------------------------------------------------------------|
A-----------4---------2---------0-------------------------------0h2---------|
E-----------------------------------------0h3---------2---------------------|

 A
-------0---|
-----2---2-|
---2-------|
-----------|
-0---------|
-----------|


       This pattern flows through the whole song

       like so (caps on downbeats):


up here in the Crows nest i am Swimming through the Breeze
      D
e-------2-------------2--------------2---------------------2---|
b-----3---3---------3---3----------3---3-----------------3---3-|
G---2-------------2--------------2---------------------2-------|
D-0------------------------------------------------------------|
A---------------4--------------2---------------------0---------|
E--------------------------------------------------------------|

one last Memory from the Sun as it is Sinking by deGrees
         G
e---------------3--------------3-------------3-----------0---|
b-------------3---3----------3---3---------3---3-------2---2-|
G-----------0--------------0-------------0-----------2-------|
D------------------------------------------------------------|
A------------------------------------0h2-----------0---------|
E-------0h3--------------2-----------------------------------|

    D
and High above an Albatross is following its Light
           G
and i will Sing to her as She flies by
        A         D
on this Beautiful Night

Ahead is the horizon, always changing, it stands fast
Far behind me are the desert islands, shipwrecks of the past
And I have seen the cannons sounding in the early morning light
But I have left my battles for the day
On this beautiful night

Below me, all the sailors, they're on this journey too
And each of us must make our unknown way upon the blue
So tonight we cast our worries, float jetsam on the tide
And we'll watch them echo far away
On this beautiful night


       For the bridge, Josh strums these chords
       Bm (x24432) F#m(244222) Em(022000) A7(x02020)

Bm           F#m
    the flat Earth may end
       Em
we may Sail off the edge
    A7
and Not be seen again
    Bm
so i sing and hope my song will form
  F#m
a Rope of golden chords
        Em
so that I can rescue someone else
       A7
should They fall overboard


       and then back to the original picking pattern (D,G,A)...


Because some of us are pirates and some of us are damned
But all of us need all of us to ever find the land
And though the passage of good hope may seem
Like a needles eye
We're floating on tranquility
On this Beautiful night

Up here in the crows nest
I am swimming through the breeze
One last memory from the sun


       Once you've got all this, you can start walking down to some
       of the bass notes.  Josh starts doing this towards the end of
       the song, starting with the transition from D to G:

...D       G                                 A
-------2-----------3---------3-----------3---------0----|
-----3---3-------3---3-----3---3-------3---3-----2---2--|
---2-----------0---------0-----------0---------2--------|
----------0-----------0---------0-----------0-----------|
-0------0-----------2---------0--0h2------2--0----------|
-----------0h3---------2--------------------------------|

       He also sometimes adds an extra beat or two to the D pattern
       by simply repeating the previous bass note before hitting the
       next one...

      D
e-------2---------2----------2----------2---|
b-----3---3-----3---3------3---3------3---3-|
G---2---------2----------2----------2-------|
D-0--------0--------------------------------|
A-----------4--------4-2--------2-0---------|
E-------------------------------------------|