[CapnScurvy]

When figuring the time a specific measured object takes to pass a specific point, the accuracy in the speed calculation comes from expecting the measured length is actually the true length of the object. The game does not provide an accurate true length of objects in it's optical views.

Using a formula that expects a yard to be equal to 3 feet, or 36 inches, is fine when our world is perceived to be as expected. However, using the same real life formula in a game world that doesn't recognize a yard to equal 3 feet will produce inaccurate results......for either finding distance, or measuring amount of time a specific measured object passes by. If the measurement is off, so are the results. The same is true if the time piece used doesn't truly measure time as a single minute equals 60 seconds. You'll not get an accurate speed calculation if the time piece errors in it's keeping accurate time.

Your making an assumption that the game provides real life optical sizes......it does not. Nor, does it provide accurate length or height measurements that could be used with an accurate visually rendered world. It doesn't do that either. There's folks that have changed measurements just for the sake of changing measurements, in order to throw off an accurate measurement (they think its more "realistic" that way)!?! As an example, TMO has the Hiryu mast height set at 20 meters tall (it's the same mast height measurement that came with the stock SH4 1.0 version game). You'll always get a stadimeter found range to be off by half what it should be using 20 meters for it's mast height with TMO. I don't think Ducimus did this intentionally (like some others) but it is what it is.

Those ship lengths found in the game files were never implemented in the game for a reason.......the devs knew their optical system was flawed but they didn't have time to fix the problem before UbiSoft came-a-knocking to release what they had. So they put the Telemeter Divisions (lens hashmarks) onto the scopes for eye candy, and kept the ship lengths out of the Recognition Manual. They fixed some of the ship mast height measurements with their patches and went on to do UbiSoft's bidding for another try at a U-Boat game, leaving the Fleet Boat simulation to fend for itself.