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Platapus · 02-23-08, 02:04 PM

NoMan,

Welcome aboard!

Calculating speed can be tricky. Any errors in your range or AoB will result in unrealistic speeds if you use the speed function in the game.

There are two really cool ways to calculate speed without using the ingame calculator. These ways can serve as a way to double check your calculations.

The 3:15 rule

When your target is sighted, zoom in on the map so that you can still see the target’s “box”. On your tool bar in the upper left of the map screen are your plotting tools. Number 6 from the left is the marker. It...well... marks on your map.

You will need a timer of some sort. Either a stopwatch or your wristwatch will do.

Note the time (or start the stopwatch) and mark the center of your target “box”. Lower your periscope

Do not use Time compression

Wait three minutes and raise your periscope. After a total of three minutes and fifteen seconds Mark where your target is on the map using the Marker tool

Lower your periscope

The fourth tool from the left is the ruler and is used to measure distance between two points (or in your case two marks)

Measure the distance between the two marks.

Lets say it reads 0.6 (which means 0.6 Nautical Miles). This will equate to 6 knots.

0.7 NM = 7 knots

Pretty cool huh?

If you ever want to use this system in SH4 (which uses yards instead of meters) use the same system but only time for 3:00

Another cooleo way to determine speed is to use the periscope to help you time the movement of your target. This system works most accurately the closer your AoB is 90 degrees and the slower your submarine, but it works pretty cool.

Find your target in the periscope

Unlock the periscope and put the cross hairs on the bow (pointy end) of the target.

Do not move the periscope

start your timer

Your target ship will appear to move across your crosshairs. When the stern passes through your cross hairs, note the total time of crossing (from bow to stern)

Speed in NM = (length of target in meters) times 1.94 divided by the number of seconds it took for your target to cross your cross hairs.

The really cooleo thing about this method is that you don’t need to know the range!!

While you are learning how to manually target, try to figure out your own solution and then ask your weapons officer to give you his solution. His will be right and you can see the differences between yours and his

Congratulations for trying manual targeting. Once I started Manually targeting, this game became much much more fun

Good luck and good hunting

02-23-08, 02:04 PM	#3
Platapus Fleet Admiral Join Date: Oct 2006 Posts: 19,369 Downloads: 63 Uploads: 0	NoMan, Welcome aboard! Calculating speed can be tricky. Any errors in your range or AoB will result in unrealistic speeds if you use the speed function in the game. There are two really cool ways to calculate speed without using the ingame calculator. These ways can serve as a way to double check your calculations. The 3:15 rule When your target is sighted, zoom in on the map so that you can still see the target’s “box”. On your tool bar in the upper left of the map screen are your plotting tools. Number 6 from the left is the marker. It...well... marks on your map. You will need a timer of some sort. Either a stopwatch or your wristwatch will do. Note the time (or start the stopwatch) and mark the center of your target “box”. Lower your periscope Do not use Time compression Wait three minutes and raise your periscope. After a total of three minutes and fifteen seconds Mark where your target is on the map using the Marker tool Lower your periscope The fourth tool from the left is the ruler and is used to measure distance between two points (or in your case two marks) Measure the distance between the two marks. Lets say it reads 0.6 (which means 0.6 Nautical Miles). This will equate to 6 knots. 0.7 NM = 7 knots Pretty cool huh? If you ever want to use this system in SH4 (which uses yards instead of meters) use the same system but only time for 3:00 Another cooleo way to determine speed is to use the periscope to help you time the movement of your target. This system works most accurately the closer your AoB is 90 degrees and the slower your submarine, but it works pretty cool. Find your target in the periscope Unlock the periscope and put the cross hairs on the bow (pointy end) of the target. Do not move the periscope start your timer Your target ship will appear to move across your crosshairs. When the stern passes through your cross hairs, note the total time of crossing (from bow to stern) Speed in NM = (length of target in meters) times 1.94 divided by the number of seconds it took for your target to cross your cross hairs. The really cooleo thing about this method is that you don’t need to know the range!! While you are learning how to manually target, try to figure out your own solution and then ask your weapons officer to give you his solution. His will be right and you can see the differences between yours and his Congratulations for trying manual targeting. Once I started Manually targeting, this game became much much more fun Good luck and good hunting __________________ abusus non tollit usum - A right should NOT be withheld from people on the basis that some tend to abuse that right.