[THEBERBSTER]

Last updated 5th May 2018

4 Bearing Method by ‘Kuikueg’ and Videos by ‘Stoianm,’

Step By Step Tutorial

This method can be used with ‘Real Navigation’ or with ‘Map Contacts.’

This is a very useful ‘Attack Plan’ if you are in ‘Fog’ and will not be able to see a ‘Visual Contact.’

‘Stoianm’ has produced his ‘Tutorial Videos in 4 parts.’

In his ‘Tutorial’ Stoianm is using ‘Real Navigation’ and the ‘Hydrophone.’

There is nothing to say if you want to use the ‘Periscope’ at any time then that is up to you.

The ‘Kuikueg Method’ does not use the ‘True Bearing Method’ and also uses the ‘Protractor’ as the main tool rather than the ‘Compass.’

Important Note.

Please note that if you are using the ‘Stock Keyboard with W - A – S – D’ then you will not be able to use the ‘Z Key’ as this is used for ‘Rig For Silent Running.’ You will need to use the ‘Sonar Station’ or use ‘Follow Nearest Contact.’

Stormys_DBSM_ SH5_ V1.3 mod has the ‘Z Key’ function.

Stormys_DBSM_ SH5_ V1.3_Hotfix_3 (essential mod).

Link to Stormys mods.
http://www.subsim.com/radioroom/showthread.php?t=164552&highlight=stormys+dbsm

As ‘Stormy’ uses ‘German Language’ in his mod you will also need to download this mod if you do not want to make manual changes in your ‘Silent Hunter Files.’

German U-Boat Crew Language Pack

Link to mod.
http://www.subsim.com/radioroom/showpost.php?p=1465509&postcount=23

If you want to change your ‘Keyboard Layout’ you might be interested in this mod.

SH_Keymapper

Link to mod.
http://www.subsim.com/radioroom/showthread.php?t=168297

Link to YouTube Video 1 (Time 14 minutes)



My part in this Tutorial can be used with the ‘YouTube Videos’ and also as a ‘Stand Alone Tutorial.’

This might seem complicated but trust me it is not.

Just look at the video’s and it will all fall in to place.

All ‘Calculations’ and ‘Data’ are taken from the videos.

1. Set the ‘Speed’ to > 0 Knots.

2. Set the ‘Depth’ to > 19 metres.

3. Order the ‘Navigator’ to calculate our new position.

4. This needs to be done as ‘Stoianm’ is playing ‘Real Navigation’ at 100% and only our last plotted position is showing on the ‘Navigation Map’ and needs to be updated.

5. Go to the ‘Hydrophone Station’and search for a ‘Contact.’

6. ‘Contact’ found.

7. Send the Crew to ‘Battle Stations.’

8. Show the ‘Stopwatch.’

9. Press the ‘Z Key’ and start the ‘Stopwatch.’

10. ‘Contacts Bearing’ is showing ‘258 degrees.’

11. Pressing the ‘Z key’ anytime will show the ‘Contacts Bearing’ in the ‘Message Box.’

12. The ‘Navigator’ has calculated our position as ‘30 degrees.’

13. Take the ‘Ruler’ and draw out ‘30 degrees.’

14. Our ‘First Calculation’ will be 360 – 258 = 102 degrees on our ‘Left Side.’

15. Take the ‘Protractor’ ‘Zoom Out’ and draw ‘102 degrees.’

16. Now take the ‘Ruler’ and draw a line ‘On Top’ of the ‘Protractor Line’ near to the top of the ‘Protractor Line’ and down to the ‘U-Boat Mark.’ ‘Zoom Out’ so as to make an accurate mark.

17. Now take the ‘Compass’ and place this ‘On Top’ of the ‘Ruler Line’ and down to the ‘U-Boat Mark.’ ‘Zoom Out’ so as to get make an accurate mark.

18. ‘Bearing 1’ is now showing.

19. This process happens only on the ‘1st and the 3rd Bearings.’

20. You now have to decide how much time you are going to allow between the bearings.

21. This will depend on a number of factors.

22. The further the ‘Contact’ is away and closing will allow a longer time and a more accurate end result.

23. Ideally ‘30 Minutes’ is good. This gives enough time for the ‘Contact’ to move a distance for you to get at least 5 or 6 degrees of movement between bearings.

24. Whatever time you decide that time must be the same time for all of the ‘Bearing Calculations.’

25. Use ‘Time Compression’ to move the ‘Stopwatch’ time close to the ‘30 Minute Mark.’

26. When the ‘Stopwatch Hand’ goes to ‘30 Minutes’ immediately press the ‘Z Key.’

27. We now have our information to set up our ‘2nd Bearing’ ‘263 degrees.’

28. Our ‘2nd Calculation’ will be 360 – 263 = 97 degrees on our ‘Left Side.’

29. Take the ‘Protractor’ from ‘Line 1’ and move it until you see ‘97 degrees.’

30. Now take the ‘Ruler’ and draw a line ‘On Top Of the Protractor Line’ near the to the top and then down to the ‘U-Boat Mark.’ ‘Zoom Out’ so as to get an accurate mark.

31. ‘Bearing 2’ is now showing.

32. Use ‘Time Compression’ to move the ‘Stopwatch’ time close to the ‘30 Minute’ mark.

End of Video 1

Link to YouTube Video 2 (14 minutes)



33. When the ‘Stopwatch Hand’ goes to the ‘30 Minute Mark’ press the ‘Z Key.’

34. We now have our information to set up our ‘3rd Bearing’ ‘281 degrees.’

35. Our ‘3rd Calculation’ will be 360 – 281 = 79 degrees on our ‘Left Side.’

36. Take the ‘Protractor’ from ‘Line 2’ and move it until you see ‘79 degrees.’

37. Now take the ‘Ruler’ and draw a line ‘On Top’ of the ‘Protractor Line’ near to the top and then down to the ‘U-Boat Mark.’ ‘Zoom Out’ so as to get an accurate mark.

38. Now take the ‘Compass’ and place this ‘On Top’ of the ‘Ruler Line’ and then down to the ‘U-Boat Mark’ ‘Zoom Out’ so as to get an accurate mark.

39. ‘Bearing 3’ is now showing.

40. Move the ‘Protractor’ from the ‘3rd Bearing Line’ and move it out to the right. It does not matter where yet.

41. You will now notice that we have ‘2 Compass Circles’ passing through the ‘U-Boat Mark.’

42. With the ‘Marker’ put an ‘X’ about half way along our ‘2nd Bearing Line.’ ‘Zoom Out’ so your ‘X’ is accurately placed on the line.

43. This will be known as ‘Mark 1 on the 2nd Bearing Line.’

44. We now take a ‘Parallel Line’ by taking the ‘Compass’ and moving our ‘Compass Circle’ from ‘Line 1’ and placing it on the ‘Line 2’ ‘Mark 1’ ‘Zoom Out’ so as to get an accurate alignment.

45. We now take another ‘Parallel Line’ by taking the ‘Compass’ and moving our ‘Compass Circle’ from ‘Line 3’ and also placing it on the ‘Line 2’ ‘Mark 1’ ‘Zoom Out’ so as to get an accurate alignment.

46. What you now see is that one of the ‘Parallel Lines Crosses the 1st Bearing Line.’ and the other ‘Parallel Line Crosses the 3rd Bearing Line.’

47. Take the ‘Marker’ and ‘Mark an X’ where the lines cross each other on the ‘1st Bearing Line.’ ‘Zoom Out’ so as to get an accurate alignment.

48. This will be known as ‘Mark 2.’

49. Take the ‘Marker’ again and ‘Mark an X’ where the lines cross each other on the ‘3rd Bearing Line.’ ‘Zoom Out’ so as to get an accurate alignment.

50. This will be known as ‘Mark 3.’

51. We can now erase the ‘2 Compass Circles and the X Mark 1 on Line 2.’

52. We can see the ‘X Mark 2 on Line 1’ and the ‘X Mark 3 on Line 3.’

53. Take the ‘Ruler’ and draw a line from the ‘X on Line 1 to the X on Line 3.’

54. We can see by Zooming out that the ‘Contacts Heading is 98 degrees.’

55. Continue out to the right with your ‘Ruler at 98 degrees’ for around 30km.

56. Recheck your alignment with the ‘X Mark on Line 3’ and adjust the ‘Contacts Line’ closer to cross the ‘X Mark’ if necessary.

57. This is the ‘Contacts Heading.’

58. We are now showing a ‘New Line Crossing Line 2.’

59. Take the ‘Marker’ and ‘Mark an X’ where the lines cross each other on the ‘2nd Bearing Line.’ ‘Zoom Out’ so as to get an accurate alignment.

60. This will be known as ‘Mark 4.’

61. To take the ‘4th Bearing’ we need to move the ‘U-Boat.’

62. We know the direction that the ‘Contact is Heading’ but we do not know how far ‘Up or Down.’

63. Take the ‘Ruler’ and move your original ‘30 degrees position to 90 degrees’ out to the right side.

64. Order the ‘Course Change to 90 degrees.’

65. Order ‘Flank Speed.’

66. Order ‘Surface the Boat.’

67. Keep an eye on your ‘Stopwatch’ as you need to be ‘Dived and Stopped’ in position when the ‘Stopwatch’ reaches your last ‘30 minutes.’

68. Take the ‘Compass’ and place it on the ‘Mark 4 on Line 2.’

69. Draw the ‘Compass Out’ as far as the ‘X Mark on Line 1’ and the ‘X Mark on Line 3.’

70. If your previous measurements have been accurate you should see your ‘Compass Circle’ passing through both of the ‘X Marks.’

71. Now move the ‘Compass’ from ‘Line 2 to Line 3.’

72. You will now notice that on the ‘Contacts Heading Line (CHL)’ the ‘Compass Circle’ is crossing the ‘CHL.’

73. Take the ‘Marker’ and ‘Mark an X’ where they cross.

74. This will be ‘Mark 5.’

75. Take the ‘Protractor’ that you previously moved to the right and place it so that it crosses the ‘Mark 5’ on the ‘CHL.’

76. This is the ‘4th Bearing.’

77. Take the ‘Eraser’ and remove the ‘Compass Circle.’

78. We do not need to overlay the ‘Ruler’ on the ‘4th Bearing Line’ as shown on the video.

79. We now need to make another ‘Parallel Line.’

80. Take the ‘Compass’ and put in on the ‘End of the CHL.’

81. Draw it out and place the other end on the ‘Mark 2’ on the ‘1st Bearing Line.’

82. Keep your eye on the ‘Stopwatch’ remembering that you need to allow ‘10 Minutes’ to ‘Dive and be at 0 Knots’ so you can take the ‘Last Bearing.’

83. Now is maybe a good time to set up your ‘Torpedoes.’

84. With the ‘Torpedoes’ now set up use some ‘Time Compression’ to take us to the ‘Dive’ time.

End of Video 2

Link to YouTube Video 3 (14 minutes)



85. Order ‘All Stop after 20 Minutes.’

86. Order a ‘Dive to 17 Metres’ if you are only going to attack using the ‘Hydrophone’

87. Order a ‘Dive to Periscope Depth’ if you intend to view.

88. If you are now at ‘0 Knots’ we need to order our ‘Navigator’ to give us our new position.

89. The ‘Navigator’ tells us our ‘Heading is 91 degrees.’

90. When the ‘Stopwatch’ shows ‘30 Minutes’ press the ‘Z Key’ to get the latest ‘Contacts Bearing.’

91. This is now showing in the ‘Message Box’ as being ‘208 degrees.’

92. Our ‘5th Calculation’ will be 360 – 208 = 152 degrees on our ‘Left Side.’

93. You no longer need the ‘Stopwatch.’

94. Take the ‘Ruler’ and draw out our ‘91 degrees Course.’

95. Take the ‘Protractor’ and draw out ‘152 degrees’ making sure that the ‘Protractor Line’ passes through ‘Line 4.’

96. Take the ‘Marker’ and put an ‘X’ where the lines cross. ‘Zoom Out’ so as to get an accurate alignment.

97. This will be known as ‘Mark 6’ on ‘Line 4.’

98. ‘Erase’ all lines on the ‘U-Boat.’

99. On the ‘CHL’ you have the ‘Compass Parallel Line.’

100. Move this to ‘Mark 6’ on ‘Line 4.’

101. You will now see a ‘New Line Crossing’ on ‘Line 3.’

102. Take the ‘Marker’ and put an ‘X’ where the lines cross. ‘Zoom Out’ so as to get an accurate alignment.

103. This will be known as ‘Mark 7’ on ‘Line 3.’

104. ‘Erase the Old CHL.’

105. Take the ‘Compass’ and from ‘Mark 7 to Mark 6’ measure the distance.

106. We know it took ‘30 Minutes’ to travel the distance between these marks.

107. The ‘Compass’ shows that our ‘Target’ travelled ‘8,550 Metres’.

108. We now need to go to the ‘Speed Chart’ and in the ‘30 Minute Column’ we see that the speed is between ‘9 and 10 Knots’ for the distance travelled.

109. Take the ‘Compass’ that is on the ‘Mark 7’ and put it on the ‘Mark 6 on Line 4.’

110. We now have a ‘Parallel Line’ passing in front of our U-Boat.

111. Take the ‘Protractor’ and draw out a ‘90 degree’ angle from the ‘U-Boat’ to the ‘New CHL.’

112. With the ‘Protractor’ on the ‘CHL’ we see that we are ‘9 degrees’ out from the ‘90 degrees’ we are looking for.

113. You can use the ‘U-Boats Compass’ and order ‘Ahead Slow.’ I personally would use the ‘Rudder’ and watch the degrees changing.

114. With ‘1 degree’ to go order ‘Rudder Amidships’

115. It is important to get the ‘90 degree Angle Correct’ as we will be firing blind just using the ‘Hydrophone’ and the ‘Z Key.’

116. Order ‘All Stop.’

117. Use the ‘Hydrophone’ or use the ‘Z Key’ to check where our ‘Target’ is.

118. Go to the ‘TDC’ as it is time to ‘Enter Our Data.’

119. “Press the ‘Red Button’ to show ‘Green.’

120. Enter the ‘Speed 9.5 Knots’ in to the ‘TDC.’

121. Take the ‘Compass’ and measure the distance from the ‘U-Boat to the CHL.’

122. Enter ‘2,700 Metres’ in to the ‘TDC.’

End of Video 3

Link to YouTube Video 4 (9 minutes 29 seconds)



123. Because we are firing at ‘90 degrees’ the ‘Range’ entered in to the ‘TDC’ is not critical.

124. Set the ‘AOB to 90 degrees Starboard.’

125. Press the ‘TDC Button’ to show ‘Red’ again.

126. Now we need to check the ‘Gyroangles.’

127. We want ‘Both Gyroangles Arrows’ pointing vertically ‘0 degrees.’

128. We move the ‘Periscope’ until we get the ‘Gyroangles’ we are looking for.

129. We now have the final piece of the ‘Firing Solution’ ‘347 degrees.’

130. This is what we will be looking for in the ‘Message Box.’

131. Go to the ‘Sonarman.’

132. Select ‘Follow Nearest Contact.’

133. He will give us a continuous update of the ‘Target’s Bearing.’

134. Be careful if you decide to use some ‘Time Compression’ as the ‘Target’ will close very quickly.

135. Use the ‘Z Key’ if possible which will be more accurate than the bearing the ‘Sonarman’ is giving.

136. We have ‘Torpedoes’ 1 - 3 – 4 set up for firing.

137. We are going to ‘Fire’ our ‘1st Torpedo’ when we see ‘346 degrees.’

138. Our ‘2nd Torpedo on 347 degrees.’

139. Our ‘3rd Torpedo on 348 degrees.’

140. In between the ‘Sonarman’s Bearings’ we keep pressing the ‘Z Key’ and watch the ‘Message Box.’

141. We are getting to the crucial stage now.

142. Keep pressing the ‘Z Key.’

143. ‘Fire 1.’

144. ‘Fire 3.’

145. ‘Fire 4.’

146. Up to this point you may well have been using the ‘Periscope.’

147. For those that have not then it is time to go to the ‘Sonar Station’ and listen to the sound of our ‘Torpedoes’ as they track towards the ‘Target.’

148. Set the ‘Sonar to 0 degrees.’

149. We hear ‘3 Torpedo Impacts’ without ever seeing the ‘Target.’

End Of Tutorial

Bearing Line Mark Numbers For Quick Reference

Mark 1 <> Place on the 2nd Bearing Line

Mark 2 <> Place on the 1st Bearing Line

Mark 3 <> Place on the 3rd Bearing Line

Mark 4 <> Place on the 2nd Bearing Line

Mark 5 <> Place on the Contacts Heading Line (CHL)

Mark 6 <> Place on the 4th Bearing Line

Mark 7 <> Place on the 3rd Bearing Line

Trevally also does a “4 Bearing Method Tutorial”. This is available as a mod

Trevally Tutorial – All v0.2 (for OHII v1.3)

Link to his Mod

http://www.subsim.com/radioroom//downloads.php?do=file&id=3329

This version uses the “True Bearing Method” using the “Compass” instead of the “Protractor”.

The “Tutorial” is part “Practical” and part “Actual”.

This all takes place in “Historical Missions” after you have selected “Tutorial” in the “Main Menu” this will take you to the “4 Bearings Tutorial” in “Historical Missions”.

Note > Further useful information.

The 4 Bearing Method v1 by Kuikueq > Pictorial

The 4 Bearing Method v2 by Kuikueq > Pictorial

Courtesy acknowledgements

To Kuikueg for his 4 Bearing Version

To Stoianm for his informative Videos

To JAFO- for the missing links.

Tip
If you shade this Tutorial and then copy and paste it to your PC Notepad you can then edit it.