Smokeboat Quiz #47

Torpedo Tubes - Part 5.

1) Before the firing interlock lever can be set at 'tube ready to fire', the following condition/s must be met:
a) muzzle door open
b) drain valve and muzzle door interlock set at 'drain valve locked'
c) depth and speed spindles in the out position
d) all of the above

 

3) If the firing interlock disconnects were left unlocked and the interlock signal arm raised, it would be possible to:
a) open the breech door with the muzzle door open
b) fire the tube regardless of the position of the doors
c) raise the ready to fire lever
d) do none of the above

 

5) The maximum keel depth for firing the MK 16 torpedo from a pneumatic tube is:
a) 60 ft.
b) 100 ft.
c) 200 ft.
d) any operating depth

 

7) The ejection velocity from a pneumatic tube is:
a) 135 ft. per sec.
b) 150 ft. per sec.
c) 70 ft. per sec.
d) 50 ft. per sec.

 

9) When rigged for dive, the torpedo tubes loaded with torpedoes but empty of water will have the:
a) tube vents open - drain valve open
b) tube vents shut - drain valve shut
c) tube vents open - drain valve shut
d) tube vents shut - drain valve open
2) The interlock disconnects are installed on a torpedo tube so that the:
a) drain interlock may be raised even though breech door is open
b) ready to fire lever may be raised even though muzzle door is closed
c) ready to fire lever may be raised even though speed and depth spindles are engaged
d) drain valve interlock may be raised even though muzzle door is closed

 

4) Lowering the ready to fire lever:
a) returns firing plunger to outboard position
b) lines up shutter bar hole to receive stop piston rod
c) locks the muzzle door
d) locks the breech door

 

6) With hydraulic tubes, you may fire ______ tube/s at a time.
a) one
b) two
c) six
d) any number of

 

8) The bow tubes are ______ than the stern tubes.
a) 14 inches shorter
b) 26 inches shorter
c) 14 inches longer
d) 26 inches longer

 

10) When filling a torpedo tube with water from WRT, to insure that the tube is completely full, check:
a) reflex water gauge
b) tube pressure gauge
c) WRT liquidometer gauge
d) water flowing into the bilges

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