While I understand the noble concept and agree completely with respecting war graves... the spirit, life force, energy (whatever you choose to call it) of those men, no matter the nationality, are not trapped within the broken metal hulls - returning bones to a favored hillside is something to make the living feel better about the loss... if I died with my shipmates on a sub, the sea would take good care of my bones.
No offense, ddrgn... just my opinion.
More info on the sub off New jersey...
http://www.u869.com/
And the Nova TV special -
http://www.pbs.org/wgbh/nova/lostsub/
And Uboat.net -
http://uboat.net/boats/u869.htm