Most accurate way to plot in navgation map
 

Hi all.
I read this tutorial http://www.paulwasserman.net/SHIII/#...ols%20Required
but i found a difficult problem:ploting the distance between
enemy ship and U-boat ACCURATELY is EXTREMERY difficult.
if there were accident error for 30m,then,enemy ship's HDG will
not be correct and Speed also too.It causes a incorrect aiming HDG
then the torpedo　won't hit!Please give me a advice　to plot well.
Thanks.

Welcome aboard:salute:

Manual targetting is tough, first focus on intercepting until you can do that without any assistance from a guide, then go to manual targeting.

Theres a few tricks to plotting to intercept most people use. First of all, plotting accurately is very hard to do unless your patient and willing to take your time. For me to get accurate points (Like my supposed targets heading and speed right) I ALWAYS zoom in as far as I can. The farther you zoom in, the less your error will be and the better off your plot will be. Second it also helps to understand what your doing when intercepting a target. A good guide for that would be in the Newbie thread then go to the first post and click on the link to "The Hunt: An illustrated tutorial" that teaches you how to intercept a target line up a good shot, and create a firing solution all manually(Dont worry about the last part yet especially if your new, manual targetting is something that takes a bit to get, Im still stuck on auto :arrgh!:) And a few pages deepr, (I cant remember what page exactly) there is a one-all picture that basically shows you everything in that tutorial in one picture using different colored lines and isntructions. But once you get that, go and practice it by using a career and continueing to practice it until it becomes second nature (until you dont have to paust the game, tab out and look at a guide to see what to do next)

Sorry that was so long. Hope it helps :yeah:

USN SR Casey Smith

PS: Get GWX 3.0, and SH3 Commander too if you havent already, it completely changes the game and makes it ALOT better :up:

Well
 

For one thing, you should zoom in your map as much as possible, and still have the two ships on screen. That will ensure your ruler tool gets started and ends on the center of each unit icon.

The periscope view has marks for measuring range based on the mast height as indicated in the ship manual. I don't use that method myself.

I believe the stock game, for sure mods, have a command for the sonar guy to give his estimate of range, or send range to TDC. Among the three results you get, pick your best guess or an average.

This is not an exactly perfect game, but even real life calculations would be subject to error.

Thank you for great advices!
I'll read the "The Hunt: An illustrated tutorial"

Suddenly i have a funny idea to measure the distance
[put the REAL RULER on my display and measure the distance]
is it possible?i think it may much easier to do accurate ploting

Im not exactly following what you say by REAL RULER?? if you mean a real life ruler.. dont. There is a "Ruler" tool in your navigation map. the way I set up my shots (Always at a 90* angle to their course and Im always there before the target) I find my 90 degree angle, then I take a ruler and start from the point of there his course intersects the angle and bring it out to about 1km usually (Ive made shots from 2km and 3km before too, like wise, ive made them from .5-.9 km too) just remember as a rule of thumb for short shots, usually try to stay .5 km out because the Torp has to arm first, I think its .3km distance before it arms? or .4? but thats beside the point

Can you elaborate?

The in-game tools are perfectly adequate to do accurate plotting; they just take some practice.

How many time do you take in-between plots? The trick is to make multiple plots over a longer period, instead of just two over a short time. Time averages all errors out of the window. Take your time and follow it from a distance for a while. Once you have a handful of plots then you should be able to draw a line through them. Some may be a bit beside it, but most will conform to the direction of the target. For example, make 5 plots (start plus 4) with 3m15s intervals. That takes you 13 minutes. The 3m15s interval is because the distance between point in 100m units works out to be the speed in knots. After the 13 minutes you take the total distance between 1st and last plot and divide by 4, i.e. 3.2km divided by 4 plots is 8 knots. Guaranteed to be accurate to 0.25 knots!

Really, then 30 meters isn't going to be an issue. Patience is a virtue, and pays back in tonnage. ;)

I make only 2 plot and interval is 1min
(i usually use Nomograph writen in Wazoo's Tutorial)
it will naturally cause a accident errors...

I'll try these advices!
Thank you very much!

1 minute is really too short. Even if you rely on the watch-officer reporting range in a 100m resolution.

Also remember that 1 degree at the default maximum visual range (8km) is 140 meters wide, double if you use the 16km environment. If the sight direction is roughly perpendicular to the target course, then this 140m is the position uncertainty (accident errors as you call it, I think) that matters in speed measurement. Or if the view direction is roughly along the target course (like when you trail from behind, or are directly ahead), then this position uncertainty will show itself in uncertain target course. So one set of plots with 3m15s is even questionable when you rely on the watch-officer reports alone. Unless you take the plots from the icon locations on the map you simply have to average it over time to get something decently accurate.