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Old 05-08-09, 12:53 PM   #71
RoaldLarsen
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Join Date: Jan 2007
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Quote:
Originally Posted by Paul Riley View Post
Continued from last report

Oct 30th,1942
07:30
3rd air attack,bombs fell very close,no damage.I suspect the sun is not high enough in the sky yet,making spotting that more difficult at long range.
08:45
4th AA,multiple fighters,many bombs,no damage.
10:24
5th AA,single fighter flew past,bomb landed close again,no damage.Decided to man guns at this moment,except for when facing bombers.Better to fight back against fighters it seems.
12:10
6th AA,multiple fighters,fired back and damaged one fighter.During emergency dive one of their bombs glanced us causing minor damage to the flaks and foredeck.Apparent our guns had minimal effect on the planes,due to low calibre and poorly trained gunners.Decided to dive against all planes now,until a better refit of guns becomes available,if ever that day comes.

As you can see,I have been having lots of fun in the bay of Biscay,and am only about 150km west of France
Keep on surfacing after 30 minutes and I will lay an even money bet that, unless there is a change in the weather to medium or heavy fog, or you manage to get outside of maximum range of aircraft coverage, you will be sunk before 12:00 NOV 2. With your current approach, you have been averaging one attacking aircraft per hour. (When you say "multiple" aircraft, I assume an average of 3.) As long as you keep surfacing so quickly, this will continue. If there is only a 1% chance that any given aircraft attack will sink you, then you have a less than 50% chance of surviving 69 consecutive aircraft attacks. At your current rate, that 69th attack will occur the morning of NOV 2.

You are averaging about 12.5km/h. In the next three days you can cover about 900km and endure about 72 aircraft attacks, or one attacking aircraft per 12.5 km.

If you dive for 24 hours, run at 1.9 knots on improved batteries (you have upgraded your batteries, haven't you?), then recharge for one hour at 10 knots, you will average just over 4km/h. Even if you are attacked by an average of two aircraft after an hour of charging (on average this will not happen) you will average less than one attacking aircraft per 50 km.

So, by resurfacing every 30 minutes you are subjecting yourself to over 4 times the rate of attacking aircraft per kilometre travelled.

If you are not detected during your first 1 hour recharge then you can switch to a schedule of recharging for one hour after dawn and again for one hour before dusk, submerged at 2.9 knots during the day, and 1.9 knots during the night. This yields an average speed of 5.5 km/h. Doing this you will be attacked by an average of two aircraft, less than once every day. This gives an average of less than one attacking aircraft per 66km, less than 1/5 your current rate of attacks. Of course, once you are attacked, you should submerge for 24 hours.
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Covered 1939-1945; now restarting in 1939 again.
Completed 39 careers, 210 war patrols, 4.7Mt sunk, 19 subs lost
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