Here's my new take on the Mk.51. I am slowly being driven insane by this stupid thing. If anyone else wants to take a crack at it - by all means go for it. There are literally NO sources available that show the dimensions of this damn thing, so had to base it off conjectures based on photos and wracking my brain trying to remember how large the one on the USS Texas was when I was there a year ago.
I am not happy with this drawing yet.