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Old 10-19-2020, 04:18 PM   #1
Von Due
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Default Questions: TDC tutorial

I just got Wolfpack and in all honesty, I haven't really learned to operate the boat...yet but I am a bit puzzled when I start the TDC tutorial.

At first, I had no bots, I looked around but within a few minutes the boat reached crush depth. I had not touched any valves at that point.
On 2nd attempt, I watched the depth meter as it showed the boat slowly sinking right from the start of the mission.

I played around with the main tanks but the sink rate was unchanged.
I then blew the trim tanks which had som water in them but the sink rate, if anything, increased.
I saw to it that the negative tank was empty and the bilge pump showed no water. Still the boat sank.
If I set any speed ahead, the boat would sink even more rapidly regardless of plane settings.

I then enabled bots and ordered to surface the boat. Nothing happened other than the boat sank yet again.

Is this a known issue or am I doing something terribly wrong?
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Old 10-21-2020, 05:12 PM   #2
Onkel Neal
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Have never heard of this happening. What version ?
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Old 10-21-2020, 05:19 PM   #3
Von Due
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Thanks for the reply! Version is 0.24c bought on Steam. I kind of forgot about this (real life and all) but now when I started it up again, with bots and then without, I don't sink anymore. Another thing is the bots can't seem to get me to periscope depth unless I manually set the trim tanks They will get me to about 8.5-9 meters but that's it. The sinking was persistent when I first started the game after setting everything up in Options but now, with the same settings, the sinking stopped.
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Old 10-21-2020, 09:35 PM   #4
Onkel Neal
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Yeah, with bots I would not touch the trim tanks, you shouldn't have to. And when at PD, be sure to have a little way on you, anything short of full stop should make it easier to maintain depth.
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Old 10-23-2020, 07:57 AM   #5
Von Due
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I have a few questions still

When the game starts now, all the tanks except the trim are all empty, that is with no water in them. The trim tank starts at a random level, usually between 6-8 m^3. Is this intentional?

Are the trim and negative tanks somehow mixed up or am I getting this entirely wrong?: With only the main tanks filled, the boat settles at around 7.5 m. With mains and negative filled, the boat settles at around 8.5 meters. With negative empty and trim tank full, the boat sinks rapidly and no adjustment on the negative tank will stop the decent. Everywhere I read, it says it is the negative that should cause the descent, not the trim tank. What is going on here?

What would a proper tank/valve operation look like for various scenarios like surfacing, diving, crash diving, holding depth and so on?

Last edited by Von Due; 10-23-2020 at 08:00 AM. Reason: typo
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Old 10-23-2020, 08:38 AM   #6
derstosstrupp
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Quote:
Originally Posted by Von Due View Post
I have a few questions still

When the game starts now, all the tanks except the trim are all empty, that is with no water in them. The trim tank starts at a random level, usually between 6-8 m^3. Is this intentional?

Are the trim and negative tanks somehow mixed up or am I getting this entirely wrong?: With only the main tanks filled, the boat settles at around 7.5 m. With mains and negative filled, the boat settles at around 8.5 meters. With negative empty and trim tank full, the boat sinks rapidly and no adjustment on the negative tank will stop the decent. Everywhere I read, it says it is the negative that should cause the descent, not the trim tank. What is going on here?

What would a proper tank/valve operation look like for various scenarios like surfacing, diving, crash diving, holding depth and so on?
Here is what I do, which very closely resembles actual procedures:

Always travel on the surface with negative full. Once aircraft are put in, you will be glad you got in that habit. Don’t bother with the trim tank when you first spawn.

To dive, Switch to electric, great speed ahead, open the vents forward and aft, forward planes hard down, aft center, standby negative, as soon as I can visibly see the boat angling down at the negative station, I blow negative (8-10 meters). Once past 20 m, 10° up on forward, 15 up on aft, til the boat is about 3 to 4° angled up, then 15 on fwd and reapproach periscope depth from below, at dead slow. Close vents. Center the planes. Then trim. For trimming, make very fine adjustments to the two wheels until the rightmost dial stays perfectly stationary.

To surface, change depth with the planes dynamically up to periscope depth at half speed, do your scope check, then great speed ahead, blow ballast, hard up on forward, aft up five, refill negative while blowing. At your option, you could do it historically and stop blowing as soon as the tower hatch comes free, so that you could pop up topside and check and make sure all is clear, and if it is, order to finish blowing, switch to diesel, recenter the planes, compressor, charge.

Last edited by derstosstrupp; 10-23-2020 at 08:50 AM.
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