wow, lack of knowledge at it's best! I have SN SS5 and as SS4 it goes for 40knots.
Try ghosting your BO and trimming your torpedo guys to 1.01 mil torpedo true ability, even SS2 might go 40knots then (with odd sailor setup) :P
best SS crew manual here: http://fm.en.kupaisky.com/Community/Forum/Old/View.aspx?num=189962&category=D07&searchType=1&searchValue=&pageCount=&sort=6&thread=20&page=4&v_page=2
|