I did some research on Eternal Father, Strong to Save thinking it could be used at my father-in-law's funeral.
I was really surprised at all the different verses that have been written. He was a WWII submarine sailor and they had a verse for submariners, aviators, divers and more. I'm really not sure what the original verses were when it was written but from what I saw with my research it pretty much covered all the different jobs we sailors might be involved in.
I remember the Navy Hymn from almost 48 years ago:
http://www.youtube.com/watch?v=NuJjaOKITn4
(Starts at 3:20 - 4:40)
My father was a Sailor, and he cried every time he heard that music and those words.