I don't see this on here anywhere.
I have it on an old Origin Jazz Library LP. I copied the lyrics from a site I found with Google, says it was recorded in 1932.

Of course it wasn't really four o'clock, not sure why that is the time given.

Titanic Blues
Hi Henry Brown

Early one mornin', just about four o'clock,
It was early one mornin', just about four o'clock,
When that ol Titanic began to reel and rock.

Captain Smith took his glass and he walked up to the front,
Captain Smith took his glass and he walked up to the front
He spied the iceberg a-comin', oh Lord, had to bump.

Some was drinkin' some was playin' cards,
Some was drinkin' some was playin' cards,
Some was in their corner prayin' to their God.

Children cryin' "Mama, mama what shall we do?"
Children cryin' "Mama, mama what shall we do?"
Captain Smith says, "Children, I'll take care of you".

Titanic sinkin' in the deep blue sea
Titanic sinkin' in the deep blue sea
And the band all playin' "Nearer My God To Thee".