ZWAARDVIS CLASS SUBMARINE

the removeble torpedo hatch in the front	contruction of the torpedo hatch
the hatches	the hatches open
the hatches open	details on the tower
metal rings in the top of the tower for the periscoop's	the start of the construction of the front diving rudders
beginning to build the pneumatik periscoop's	building the cilinders for the periscoop's
building the cilinders for the periscoop's	the airvalves for the periscoops
building the conning tower	the first periscoops