The song is by Paul Mason Howard and Paul Weston (husband of Jo Stafford). It was copyrighted in 1951 by the Walt Disney Music Company - could it have been in a Disney movie? Here are the chords I found in a Hal Leonard fake book (measures are separated by slashes with spaces). You may find these chords impossible, but that's what the book provides.
-Joe Offer-

SHRIMP BOATS
(words & music by Paul Mason Howard and Paul Weston) © 1951, Walt Disney Music Company
^^
Chorus:
Shrimp boats is a-comin, their sails are in sight
Shrimp boats is a-comin, there's dancin tonight
Why dontcha hurry hurry home, Why dontcha hurry hurry home, look here the
Shrimp boats is a comin, there's dancin tonight

Eb / Ab / Eb Fm7/Bb / Eb
Eb / Ab / Eb Fm7/Bb / Eb
Eb / Eb / Eb / Eb
Eb / Ab / Eb Fm7/Bb / Eb

1. They go to sea with the evening tide,
And their womenfolk wave their good-bye
Ill sant vas, there they go
While the Loosiana moon floats on high
And they wait for the day they can cry:
CHORUS

Ebmaj7 Eb6 Ebmaj7 / Eb6 / Ebmaj7 Eb6 Ebmaj7 / Eb6 Eb
Ab G / Gb F7 Emaj7 / Eb Adim7 Eb
Ab G / Gb F7 Emaj7 / Eb

2. Happy the days while they're mending the nets
'Til once more they ride high out to sea
Ill sant vas, there they go
Then how lonely the long nights will be,
'Til that wonderful day when they see
CHORUS