the appearance of a submarine a a battle and a disappearing submarine are printed a second track b lower half in which positioning signal marks transparent spots b are printed in corresponding positions to the submarine in each frame of the first track a and separated by one blank frame d for generating a switching signal a display section in which an exploding submarine c is printed in fig8 the film includes perforations 39 and a soundtrack 40 in operation the photoelectric element 9 moves vertically and horizontally in interlocking relationship with the gun 1a similarly the position of the photoelectric element 9 changes as the firing direction of the gun 1a against the screen 2 changes activation of the projector 12a causes the first beam r1 to pass the first track a of the film 20a thereby projecting the appearance of a submarine a on the screen 2a and the second beam r2 to pass the positioning signal transparent spot b in the second track b and project them towards the projector 8 when the target is hit the second beam r2 coincides with the photoelectric element 9 and sends out a hit signal thereafter the second beam r2 after passing the blank frame d enters the photoelectric element 9 which causes the element 9 to send out a positioning signal the signal activates the switching mechanism 30 to turn the mirrors 13 and 14 to the position shown by the broken lines in fig7 such that the first track a of the film 20a is projected off the screen 2a while the second track b of the film 20a depicting the exploding submarine c is projected onto the screen 2a the shooter.