What is the speed of the G7a in Sh5?

[jason210]

Originally Posted by Commander Mysenses

Or an error in your calculation!

Thanks for trying that out!

It confirms what I thought - that the fast setting of the G7a is 44 kts and not 40 kts as they were on the actual U-boats.

There's no error in the calculation. There may be slight inaccuracies caused by measurement since I'm using the ruler on the map which is only marked in 50m intervals, as you point out. Considering I'm using the Queen Mary at a speed of 25 kts for target practice, where I am firing the torpedo at the middle of a ship that is almost 300m long - one second error in timing is neglegible. It amounts to 12.8 metres.

The problem was that I was assuming 40 kts was the fast torpedo speed, and using this figure in my calculations, when in actual fact the torpedos were doing 44 kts. This is why they were overshooting by over 300 metres.

Well, at least that's cleared up!

[TheDarkWraith]

Originally Posted by jason210

Thanks for trying that out!

It confirms what I thought - that the fast setting of the G7a is 44 kts and not 40 kts as they were on the actual U-boats.

There's no error in the calculation. There may be slight inaccuracies caused by measurement since I'm using the ruler on the map which is only marked in 50m intervals, as you point out. Considering I'm using the Queen Mary at a speed of 25 kts for target practice, where I am firing the torpedo at the middle of a ship that is almost 300m long - one second error in timing is neglegible. It amounts to 12.8 metres.

The problem was that I was assuming 40 kts was the fast torpedo speed, and using this figure in my calculations, when in actual fact the torpedos were doing 44 kts. This is why they were overshooting by over 300 metres.

Well, at least that's cleared up!

if you're using my UIs mod you've probably never noticed this before:


That sub dial inside the speed dial is the torpedo speed. When you switch from slow, medium, and fast this sub dial changes to show the torpedo speed. It will change based on torpedo selected and speed of torpedo selected

I have lots of little details like this scattered all about the mod that I don't even remember them all

[jason210]

You're right, I hadn't noticed it before

But it was fun timing toropedos and sinking the Queen Mary

Great mod by the way. Thanks a lot!!

[Hinrich Schwab]

Here are some nice pre-calculated figures I did a while back. This will help with solutions. It won't resolve timing issues from calculation error or angle error (divergence-convergence of AOB during run) I do not have all possible speeds in here (I think there is an oddball 28kt torpedo slipping my mind) but here is what I have.

30kts: 925m/min.
40kts: 1233.334m/min.
44kts: 1356.67m/min.

*Maximum Run*

30kts@3km(Electric Torp) 3.24min.
30kts@12.5km(Steam Torp Slow) 13.51min.
40kts@7.5km(Steam Torp Medium) 6.07min.
44kts@5km(Steam torp Fast) 3.69min.

I hope this little bit of math helps.

If nothing else, it will help select the right speed for you.