After being charged down by a BB in my smoke and with no idea if he would get to me before my torps reloaded, I decided to do some addin up.
Knots and Km in same game is first problem, but I sorted that. At 30knots a ship covers approx 1 km per minute.
Torps go twice the speed, which makes predictions easier, so 60kn = 108Kmh = 1.8km/min = 30m/s.
A tinfish should cover 10nautical miles in close to 5 mins. But it doesn't, takes 90seconds.
Another way to look at it, 10KM = 5.3 nautical miles. At 60 knots, torps take 5.3 mins to cover 10km.
Is my math wrong, or is the mathematical perspective of this game skewed?