not really systems, but I think these belong here.
these are some DESRON markings for the USN. I will upload more when I (or somebody else) draws more, these were scavenged from my perry drawings. especially when doing real designs, I think at least somebody will find some good use for them
on a sidenote, I could not find which DESRON the first one was...... I had not marked it, and the perry drawings where more then a year ago. it was on the perry as of 1994.... if somebody knows, please post here or notify me and I will fix it