At https://www.discogs.com/Seafarers-Chorus-The-Conducted-By-Milt-Okun-Featuring-Eugene-Brice-We-Sing-Of-The-Sea/release/3954828 it says, "The Seafarers include: Elijah Hodges, Roy Thompson, Joseph Crawford, Ned Wright, Sherman Steed and Joli Gonsalves." Okun is credited there as conductor and arranger.

There is more information at http://www.harbel.one/seafarers/eks7182.htm where the soloist is listed for each track on the album, and there are legible reproductions of the front and back covers of the album.

It would appear that Okun didn't sing on this album.