The Eggnogstic wrote:
So, at least as originally conceived, photon torpedoes were physical ordnance analogous to naval torpedoes, mines or depth charges, depending on how they were used.
That is how I think of photon torpedoes as well.
They appear to be versatile, guided, yield-adjustable, self-propelled weapons. In TOS and TOS-Movies, they appear to be also the "go to" weapons when the ship becomes power-limited due to excessive shield stress or other power expenditures.