whats your favorite way to calculate speed?

[Snowman999]

Originally Posted by PeriscopeDepth

That there's no working magical auto speed stop watch? I don't recall there being one in WWII either. If you're going for the challenge/realism in manual TDC I don't understand why people use the speed chrono.

PD

If you're going for realism the primary way speed was input was from sonar turn-counts. On-line sonar manuals give precise methodologies, down to determining three- or four-bladed screws. It was a fire-control PARTY--a team effort.

Since I read here that the game doesn't allow sonar to be used at PD (!!!) there is no "realistic" way to determine speed.