Early torpedoes already needed gyroscopes to hold a course, but crews did not have to use every possible programmed turn. Complex settings demanded experienced personnel because a small error could send the weapon far off its intended path. Implementable, usable, and practical under wartime conditions are three different stages of technology. A feature demonstrated in the early 1930s might work for expert prewar crews by the late 1930s yet remain unsuitable for mass wartime use until much later. Added capability also raises maintenance precision, training requirements, and the value of skilled technicians. Technical possibility does not guarantee dependable fleet service.
Notable Point · 4:45:01-4:47:00
When programmable torpedo guidance becomes practical
A guidance feature can exist years before ordinary wartime crews can set, maintain, and trust it reliably.