Quote:
Originally Posted by razark
Ah. So this appears to be more of a u-boat, rather than fleet boat, thing.
I'm no expert, but the vortex explanation seems reasonable.
However:
The periscope is perpendicular to the water flow, while the gun barrel would be parallel to it. Would the same mechanism work for both?
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As per my note above, I don't think the coil on the deck gun is such a device.
I think it's just a bad graphical rendering of the lanyard/rope that secures the muzzle cap/plug to the deck gun platform to prevent its loss overboard.