All Submarine classes (in service with the Polish Navy).
2 ship classes.
Please note that we list the classes by navies that initiated/owned the class. Often vessels of certain classes were then built for other nations (or lent), those ships are not visible here but only through the navies pages or by looking into each class.
War losses: Submarines
288 Submarines lost. See all Allied Warship losses.
Books dealing with this subject include: