1. rub basicly forces you to manualy plot things out on the nav map, unfortunatly there are several problems with this. One its suppost to be the job of your navigator to plot that stuff out based on reports you give them, two it takes alot of time to plot that stuff out, when you should be getting the info for your navigator, and 3 you cant use your plots for the tdc, nor can you plot on the tdc. Realy the only time the commander of the boat tends to plot is when trying to figure out intercepts, or plotting course he wants the boat to take. Also the tools arnt so great for indicating ship locations/directions clearly without doing a bunch of drawing, and you cant make any notes.
You can fix this by digging in the sea and aircraft folders. look at the jpgs in the original vs rub's and put the originals back. For ships the original doesnt have, find the equivilant original and use its, just rename it apropriatly.
2. you will have to dig for it in the rub folder then find the matching file in the original, or alter it to what you want.
3. see 2
4. its used to figure out things, basicly by taking the ruler and drawing a line through the points, if you know 2 of the values you can then figure out the third.
Like if you know the ships speed, you can figure out how far a ship will go in x time, like say the ship is going 6 knots and you wana know how far it will get in an hour, you take the line drawing tool, draw a line going across 6 knots, and 60 minutes, and continue the line across distance, where the line intercects distance tells you how far it will go)
You can use it any time you know 2 out of the 3 values to figure out the third by drawing a line that hits the 2 values you know and see where it hits the 3rd.
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