C:\Program Files\Ubisoft\Silent Hunter 5\data\Textures\TNormal\tex\seabed01.dds
http://s2.noelshack.com/upload/20147..._sans_titr.jpg

with a little more contrast, a higher pixel size and a little more variety in the colors, even new models that would be OK.
if anyone has the answer to my question here, he would be welcome
http://www.subsim.com/radioroom/showthread.php?t=167430