Manual Targeting in TMO different from stock game?

[Rockin Robbins]

There is one thing wrong with ColonelSandersLite's instructions for using the PK, and if you followed my earlier instructions, you already know what it is.

After entering speed and AoB it is absolutely vital that the PK be on before you take your range/bearing sight. ColonelSandersLite turns on the PK after the range/bearing sight. The reason that is wrong is that after taking the sight in ColonelSandersLite's method, your artificial target is not moving. The real target is. Therefore you introduce an error in the amount of distance the target moves between when you hit the send button on the stadimeter to when you start the PK. The artificial target, which is what the sub really shoots at, will be behind the real target by that distance.

If you subsequently take another stadimeter shot, it will correct the error. But why would you use wrong procedure to introduce the error to begin with? Just turn on the PK first and you'll be bang on every time.

I used to use a chart to do lead angle. I stopped. Why? What is easier than picking the wrong column off a chart when under time pressure? NOTHING! Humans make stupid errors given the slightest opportunity, and so will you. However the TDC doesn't make that mistake. It always knows which speed of which kind of torpedo is going out the selected tube. It always is picking the correct gyro angle. That's why the Dick O'Kane method uses a rule of thumb for lead angle and lets the TDC pick the gyro angle. It works correctly every time. People don't.

Simplify. Toss out steps that introduce foreseeable error. Then do it some more. What you're left with is repeatable valid procedure.