I know what you're saying, sir. My fathter's SC-699 had Mousetraps in those type of launchers. But, PTs carried them too, see here:
120521701 by Tim Connelly, on Flickr
A demtleman who owned a 63-foot AVR and owns a 85-foot ASRC told me that ARB-22 carried two of these lauchers on her foredeck (these are for my model of ARB-22 which Kyle Lord is building for me now). He needs to know what color the rockets were.
Do you know?
I bought them on Shapeways. Here: