Photo# 1 is the front view of this sub's WTC. I used a "C" size battery to give other here an idea on how large this sub's interior is.

Photo#2 is another view of the sub's WTC. Note: the sub's serial number is found at the lower-front part of the WTC. In the back is the opening for the sub's magnetic clutch drive system for diving.

Photo#3 When you aquire a vintage submarine it is a good idea to look over the sub's entire WTC/hull for cracks before you take them out for dives. I spotted this crack on the top of the WTC near the magnet assited on-off switch. This crack can be repaired using CA glue.

Photo #4 Check this area for micro cracks. I found one in my other Nikko submarine. Check the antenna rubber plug for cracks.