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Originally Posted by fredbass
Ducimus: I think you'd better drop this one. It seems somebody is confused between the game and reality. (I won't name names) He might have some sort of autism. :hmm:
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I take it you are referring to me? Please let me refer you to the calculations I have made in game. They give good proof that SH3 is faithful to real-life fuel usage.
http://www.subsim.com/radioroom/show...8&postcount=18
Quote:
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Originally Posted by Corsair
OK here we are again... 
Without making tests, it's easy to make a fast calculation.
Let's say a VIIb has an autonomy of 8000 miles at 8 knts (it's close and makes it easier).
We run it on the surface at 8 knts, this gives us 1000 hours (which is the unit used on boats for fuel consumption)
Assuming the weather stays nice and beautiful (for making things easier) our sub A will run 8000 miles @ 8 knots in 41.66 days (1000 hrs / 24)
The same sub B runs in the same nice weather conditions, but is submerged 12 hours @ 3 knts, reloads batteries 3 hrs @ 5 knts and runs surfaced 9 hrs @ 8 Knts every day. This gives us 36 + 15 + 72 = 123 miles a day, which is average 5.125 Knts.
Since our sub B uses its diesels only 12 hrs a day, the 1000 hrs of autonomy give us now 83.33 days, for a total distance of 123 * 83.33 = 10 250 miles
So although it will take twice the time, sub B will travel 2.250 miles i.e. roughly 28% further than sub A in the same weather conditions. |
On the bit I have underlined:
You are assuming that because the speed setting is the same; you are using the same amount of fuel. Sub B only uses it's diesels 12 hours a day, but one of the diesels is running at 500rpm for 3 hours in order to charge the batteries. Because one of the motors is running faster the 1000hrs of autonomy no longer applies.