Q - I sit partially corrected. I did say I "think" it is holler song. Thanks for the clarification and links.

However the Who Built the Ark I referred does not resemble what I read in the link you provided or in any other mudcat or google search. There are verses that have a lot of New testament references in. So perhaps what I heard was a concoction of several songs or has new stuff added in.

The song I heard and described in above post is titled Who Built the Ark (traditional). It is credtied to "Forbitter" a shanty crew based at Mystic Seaport Museum, USA. Richard Halpert originally collected the song in 1939 from Josephine Douglas who was an imate at a women's correctional farm in Mississippi. It is described as a rousing gospel style river song.

If anyone is interested the recording is on Flickering Light by Ramskyte

Ramskyte thread on Mudcat
Morris shop where you can buy CD