Dern your hide you posted that to make me think LOL. It sounds like it was a screw that had fouled something like a cable. Here’s the problem calculating the RPM’s by the sound though. You have 5 blades. How many blades fouled or was it actually two shafts fouled or two pieces of cable one on one shaft or screw and one on another? To be honest I can’t remember but I think upper 100’s or low 200’s was Flank RPM territory. https://commons.wikimedia.org/wiki/File:Propellers_of_USS_America_%28CV-66%29_in_dry_dock_at_Norfolk_NS_1985.jpg
Or coulda been a shaft bearing issue. I can’t imagine CHENG keeping the screw going if that were the case.
LOL...my mission for the day is now accomplished! (The mighty cva66snipe must now plumb the depths of long forgotten lore...:)
I always thought that it was sound of the cavitating screws smashing against compartments of air and water, but never thought to ask anyone...you seemed an appropriate person to ask!
