is there a way of controlling a subs floating angle?

is there a way of controlling the bow to stern floating angle of how subs sit in the water ?

what im trying to do is lower the stern only yet keep the overall draft height and bow where they are, can you transfer weight to the stern or lower just its floatability factor?

to better understand what im going for, i want to lower the stern about half a meter to get the painted waterline to be level with the waterline along its full length.

in the game the subs sit with the deck pretty level but in pictures the subs sit with the bow having more of an upward slant and the stern lower so i want to replicate that.