I think I have probably told you this before (hehehe...doing the same thing with Freepers now that I do with my wife and friends “I’ve probably told you this before”...:)
On my first transatlantic crossing out of Norfolk, we left late in the day, and I hit my rack. I woke at the early hours of the morning around 0200-0300 I think, and the entire compartment was shaking in time with a thudding sound. It was going “WHAM WHAM WHAM WHAM WHAM WHAM” about 240 times a minute. (That might mean something to you, but when I reconstruct it today, I remember the sound, and can time it for 24 “whams” in six seconds multiplied by 10.
I got out of my rack and went back to the fantail, and there was a mountain of white water behind the ship!
You probably know this-was that “Wham” one rpm, or was it one of the screw blades making the noise (so divide 240 by the number of blades on the screw?) I don’t know how that works...I always just assumed one wham was an RPM.
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
