Thanks for the tips guys, i pretty much know 50% of that

, i personally like the boats that shoots a salvo of ¨depth charges¨, that looks like Panzerfaust heads, they dident do all that much damage, but enough to get slow you down. Thoose boats got more to it and feels funnier to evade, thoose with launchers on the side can be annoying. I try to get over areas where theres sea floor, so incase i get too much flooding, i can try to go silent and slowly sink to the floor and wait it out, if its not too deep, or i try to make a run closer to the island so i hopefully make the destroyers go ''Nah, its not worth it'' or likely. Is there any charts of some kind that shows maximum depths resistance speed fuel & max distance etc?
Thanks for the effort of bringing thoose links, but seems like that dident work either 403 Forbidden this time

, will do some research on it.
My country is banned from download from Gamefront it seems...