Yes, you always need to lock the target for the stadimeter to work.
I'd love to see the Pk marker on your attack map on that one though. :)

I suppose you can get the speed reading doing it that way... just need to do the range estimate with the stadimeter the same way a couple of times, I doubt the range is going to be accurate though.

Ooh well...


Ooh BTW, don't you need a class name for log entry, cause I'm wondering how your going to get the vessels class and tonnage in the Capt. log doing it like that..



Side note:
Came across a carrier last night, damned if I can get the range to work on those... mast hight doesn't seem to work properly on them (I always check the attack map due to 150yrds range variation, I'm a perfectionist..:oops: ) when set at mast hight the vessel is about 1500yrds closer then it actually is, at tower hight it better but still way off.

Estimate range and other stuff.
 

Hitman.

1. How do you estimate a range to target just by looking at it in the scope ?.

2. I can see on your screenshot that you are using the 10 x zoom mod. How can you use the stadimeter at 10 x zoom. I use it to and i remember that in the install readme file for that mod the write that you must zoom back to normal (6 x zoom) game settings for the stadimeter to be accurate.

3.You write in this topic that you lower the stadimeter to the "furnal". I am danish and don´t know the word, is furnal the smokestag or what.

4. And finally you estimate the "furnal" to be 50 feet, how do you do that and is there a mod or something somewhere that tells you the height of furnals for all ships. It would be a great help as it is very hard to se the mast heigt af 10000 meter range.

Nissum:arrgh!:

Direct reading by just looking at the target is not possible, you probably misunderstood my previous posts. You could however simply check how many marks of the scope it covers, then use the formula to obtain distance, but doing so is more time consuming than using the stadimeter, and also less precise at large ranges.

Nope....the screenshot is a plain stock, unmodded SH4 except for the 20000 yards horizon

Yes funnel is smokestack, the ship's "exhaust"

The heigth of funnel you must guess yourself :) As I wrote before: "The heigth of those parts I calculate using rules of thumb: 8 feet for each deck, then use the decks as yardstick to approach the bridge or funnel heigth. Works usually well"

Cheers

Ok i didn´t know that 10 X zoom was stock SH4. I only have 6 x zoom. I must say you have an unusually clear view of a merchant at 11000 meter range, is that due to the 20000 meter horison mod. Where can i find that mod.

What is the distance between the mars in the scope, and what is the calculation formula you are talking about.

Nissum:arrgh!:

No I think it's probably because of the 1400x1050 screen resolution :D The 20000 yards horizon or any other you want to set is possiblke using TimeTravellers tweaker and the Scene.dat tweakfile for SH4 (All that available in the SH4 mods forum). It will however not increase your crew's spotting range until you also tweak it, and it is not perfect because smoke is not seen that far.

0.25 degree at high power and 1 degree at low power, I think. The formula can be found in the in-game manual.

:up:

Now for the AOB
 

Ok moving along, i have now obtained the skill of getting the speed, course and range fairly easy. I now only need one more piece of info to have a good firering solution, the AOB. I have been looking in the forum for info about obtaining this info but every where i look it always state, "you now have the speed and course, now feed the AOB to the TDC and you have a firering solution". Fine ok but how do i get that info and what is "angel on bow". Is it the angel from my sub bow to the target or what.

Nissum:arrgh!:

PS: I can see i have gone from Bilge rat to Nub, whatever that is.

Correct me if I am wrong guys, I believe for the carriers you need to line up the flight deck in the standimeter. At least thats always seemed to work for me for some reason.

If you are getting the targets course easy enough just keep adjusting the AOB until the targets course indicates what you calculated on the upper dial of the PK.

And yes when properly entered the AOB selector switch will be in a position that represents the target ship. The mark at the six oclock position is "you".

The reason for the stadiameter is to be able to keep the target in view and get a range reading EVEN during foul weather, when the sub is bouncing around.

If you want to use manual trig to figure range from vertical tic marks during calm weather thats almost just as good; but, the prism in the kollmorgen scope allows for split-image range finding just like the surface ships have, only addaptive for a small objective lens such as the scope.

To expand on this, as you adjust the AOB to various values (and click the "send" button to the TDC each time), you will see the top ship on the TDC rotate. The outer ring respresents the target ship's true course, as pointed to by the bow of the ship on the inner ring. If you know the target ship's course, you can simply adjust the AOB until the 0 point at the bow of the ship on the inner ring is aligned with the ships true course on the outer ring.

AOB and true course of the target are really the same information. The difference is that the true course is relative to a compass, while the AOB is relative to the true course of your sub. Since you know the true course of your sub at all times, knowing one is as good as knowing the other.

Yards or meters
 

Returning to the stadimeter. It is very difficult to use the stadimeter at long range becourse i cannot see the top of the mast. When i think the stadimeter is in the right position it tells me that is is aprox 8000 to target. When i mssure it in my navigation chart ther is just about 6800 meters, so here is my question. Does the stadimeter show the range in meters or in yards ?.

Nissum:arrgh!:

PS. anybody know of a mood that makes you zoom more than x 6 in the scope?

Table 8. in Bowditch tells us that the distance to the horizon is 1.144 x sqrt of height of our eye above sea level.

Then: if scope is 3 feet ASL, distance to horizon = 1.9815 nm (4014.5 yds.) (see graphic below)

As you can see, in my example, the target ship will be "hull-down". The curveature of the earth prevents us from observing the full height of the target and therefore prevents us from getting an accurate Range to the Target.

This means that we must wait to get visual range measurement on our target. If there are no DDs in the vicinity, we can PING for range or use radar.

The distance to horizon depends on the height of our eye when making the observation.
http://img262.imageshack.us/img262/5...feyeim2.th.jpg