Are you talking about WWII torpedoes (Mk 14 & 18) or modern
torpedoes ? WWII torpedoes had a set of setting knobs that were engaged by a spindle in the torpedo tube. The electromechanical analog TDC (torpedo data computer) in the conning tower fed constant corrections as to gyro angles to the torpedo prior to launch, and the torpedo would turn to that angle upon launch. Whether the torpedo hit depended on how good the data was when it left the tube and any target ship movements post firing. So the torpedoes were loaded such that the spindle could engage the setting knobs, and the spindle was withdrawn just prior to firing.
This pre-WWII advance meant the submarine itself did not have to be boresighted on a target, and the torpedo could be steered to where the TDC (based on input data from periscope observations) calculated the ship would be, based on the range and the speed of the torpedo, insuring a reasonable chance of a hit. Mk14 (steam) were faster than the electric Mk 18, an there was a different set of cams (which modeled the situation) employed in the TDC depending on the torpedo type.
Modern torpedoes (US ADCAP Mk 48) have a data link attached ( was wire, fiberoptic, now?) in a spool at the rear of the torpedo
that is several miles long, and corrections to the torpedo course and depth can be fed after launch via the digital fire control
system in the submarine. The Mk 48 torpedo has an active sonar system in the nose that can guide it the last part of its course to a target.
: --Previous Message--
: When a torpedo is loaded into the tube and
: corrections are inputed in terms of offset
: angle, speed setting(if it had variable
: speeds), depth setting.etc.
: Did the torpedo have to be installed in such
: a manner so as to align these presumably
: input ports with another port which was
: controlled from inside the torpedo room?