Hmm, I bet there's a mechanism involved that either made clicking noises relative to a 1 km measurement on a map or in a vehicle or vessel that clicked off kilometers in transit.

A 5" 38 cal @18K, okay, how about a 5" 54 cal?

Anyone got an idea what the top speed record is for a Spruance Class Destroyer, in Battle Override with the stops pulled out? Any idea how long it took for the ship to come to a stop from that speed?