Learning Manual Plotting and TDC

GC1CEO · 02-28-06, 12:57 AM

I have embarked on learning how to work with 100 percent realism, however I am the kind of person who has to learn things in his way so after a few mission attempts and reading through a few manuals, I have to come to a few conclusions/theories and want some feedback on them to see if I'm getting the right ideas.

It seems like the best approach is to get the target's course and speed and not actually calculate the rest until I'm at a spot far ahead in the target's course where I intend to fire versus trying to gather AoB and all that at each initial observation where all I'm trying to determine if course and speed.

The easiest way to get an observation seems to be visually, I can't really determine range at this point with the hydrophone and obviously the sonar operator isn't about to give it to me. So I identify the target class and such, this part is pretty easy. Next I determine range through the stadimeter, I'm not sure how to do this accurately from a distance between of the waves but the difference in measurements i have gotten have only been different within a few hundred meters so its not neccesarily a big big deal. I really dont need the AoB as my intent in the end of all of this will be to make it so the AoB is 90 degrees when I fire. Speed is a bit tough, however I suppose I can guess-estimate with Slow being 6 knots, Medium being 10 knots and such for a merchant.

I take enough of these observations to know the course and speed, from this I know where the ship will be at any given point along its course at a given time. If my measurements are accurate then I don't really need to observe the target anymore, I figure out a parallel course and take it and get ahead of the target. If the target's course is 200, obviously a parallel course is also 200 and the course I want to hit AoB 90 Starboard will be 290 degrees. My ideal distance to target when I fire will be between 600-800 m but I'll settle for up to 1000-1200 m.

So I get to a point where I'm only 800ish m from the target's course, so it should be crossing directly in front of me. I got its speed (lets say 6 knots), its planned range at that point (800 m), AoB 90 starboard. I input all this manually into TDC, set my torpedoes (I figure either I or M and at F) and wait with periscope up, although in theory I guess I could use hydrophone on this. I merely need the current bearing to target, nothing else.

I'm not totally sure on the next bit of when to actually hit fire, my first guess is to fire when its at exactly 0 degrees but I think its gonna miss because it'll be hitting 0 in front of me by the time the target is say 5-10 degrees from me. I'm not sure on this part. But the rest makes a degree of sense to me.

Any feedback?

02-28-06, 12:57 AM	#1
GC1CEO Watch Join Date: Feb 2006 Posts: 21 Downloads: 22 Uploads: 0	Learning Manual Plotting and TDC I have embarked on learning how to work with 100 percent realism, however I am the kind of person who has to learn things in his way so after a few mission attempts and reading through a few manuals, I have to come to a few conclusions/theories and want some feedback on them to see if I'm getting the right ideas. It seems like the best approach is to get the target's course and speed and not actually calculate the rest until I'm at a spot far ahead in the target's course where I intend to fire versus trying to gather AoB and all that at each initial observation where all I'm trying to determine if course and speed. The easiest way to get an observation seems to be visually, I can't really determine range at this point with the hydrophone and obviously the sonar operator isn't about to give it to me. So I identify the target class and such, this part is pretty easy. Next I determine range through the stadimeter, I'm not sure how to do this accurately from a distance between of the waves but the difference in measurements i have gotten have only been different within a few hundred meters so its not neccesarily a big big deal. I really dont need the AoB as my intent in the end of all of this will be to make it so the AoB is 90 degrees when I fire. Speed is a bit tough, however I suppose I can guess-estimate with Slow being 6 knots, Medium being 10 knots and such for a merchant. I take enough of these observations to know the course and speed, from this I know where the ship will be at any given point along its course at a given time. If my measurements are accurate then I don't really need to observe the target anymore, I figure out a parallel course and take it and get ahead of the target. If the target's course is 200, obviously a parallel course is also 200 and the course I want to hit AoB 90 Starboard will be 290 degrees. My ideal distance to target when I fire will be between 600-800 m but I'll settle for up to 1000-1200 m. So I get to a point where I'm only 800ish m from the target's course, so it should be crossing directly in front of me. I got its speed (lets say 6 knots), its planned range at that point (800 m), AoB 90 starboard. I input all this manually into TDC, set my torpedoes (I figure either I or M and at F) and wait with periscope up, although in theory I guess I could use hydrophone on this. I merely need the current bearing to target, nothing else. I'm not totally sure on the next bit of when to actually hit fire, my first guess is to fire when its at exactly 0 degrees but I think its gonna miss because it'll be hitting 0 in front of me by the time the target is say 5-10 degrees from me. I'm not sure on this part. But the rest makes a degree of sense to me. Any feedback?