SUBSIM Radio Room Forums - View Single Post - Getting the protactor or even bearing lines to match my relative heading.

Jonas Grumby · 11-30-19, 04:15 PM

Guys, guys, guys----use the attack scope for all readings and draw the magnetic bearing (bottom attack scope value). No need to use a protractor at all when the machine does it for you.

Have your chart set up beforehand. Turn off protractor. Have angle and distance set to "on". "Snap" to "on". Have the "x" option on the chart set and ready to mark on your chart.
Now take a range and bearing with the attack scope and go to the chart and immediately click on your boat (snap should be on). You now have a point to measure from. Draw a line from your "x" mark on the bearing you just saw out to the distance you just estimated. Now put an "x" or a circle on that point and erase the line you just drew. If the ship was at 345 and range estimated at 4000 then you obviously would draw your line at 345 and out to 4000. Easy. You could teach a monkey to do this.
Repeat every few minutes and you will get a good solution on convoy course.
Maneuvering during this process does not matter. Your heading during this process does not matter.
I'm TommyGuns on Wolfpack and I approve this message.

11-30-19, 04:15 PM	#11
Jonas Grumby Watch Join Date: Feb 2017 Location: Retired in Rapid City, South Dakota Posts: 22 Downloads: 123 Uploads: 0	Determining Bearing On Chart Guys, guys, guys----use the attack scope for all readings and draw the magnetic bearing (bottom attack scope value). No need to use a protractor at all when the machine does it for you. Have your chart set up beforehand. Turn off protractor. Have angle and distance set to "on". "Snap" to "on". Have the "x" option on the chart set and ready to mark on your chart. Now take a range and bearing with the attack scope and go to the chart and immediately click on your boat (snap should be on). You now have a point to measure from. Draw a line from your "x" mark on the bearing you just saw out to the distance you just estimated. Now put an "x" or a circle on that point and erase the line you just drew. If the ship was at 345 and range estimated at 4000 then you obviously would draw your line at 345 and out to 4000. Easy. You could teach a monkey to do this. Repeat every few minutes and you will get a good solution on convoy course. Maneuvering during this process does not matter. Your heading during this process does not matter. I'm TommyGuns on Wolfpack and I approve this message.