Cmdr's MadMardigan & FilmsGaming, thanks for the info.
I've was playing around with the new "toy"s when I accidentally discovered that you can pull them out! Yes, Cmdr. Gaming they refer to torpedo speeds and I'll have to figure out how to use them. I've gone to the site for the grid that you provide Cmdr. Mardigan and will give it a thorough reading to understand it's usage. Thanks so much to both of you.
https://www.subsim.com/radioroom/ima...humbs_Up-1.gif