Whats the easiest way to visually estimate speed using hitmans optics?

[ChaosDuck7]

Ok, so I figured out how to do a range estimate with the periscopes.

But now I want to be able to estimate speed quickly, by visual means.

I know how to use the 3:15 , 2 mark method but I want to be able to do it just using the periscope.

Thanks!

[Pisces]

Really estimating it would be done by looking at the bow wave. The bigger it is the faster it is.

The following is not really estimating, more measuring. But since you need the length of the ship, which depends on the ID of it, it might still be considered as such:

Set periscope/uzo to 0 or 180 degrees bearing.

Turn uboat until the unit to be measured is almost right in front of the centerline. Make sure you stopped turning, and have rudder amidship, before it crosses. (DON'T turn the scope anymore)

Own speed doesn't affect the duration of the measurement, but better to do it slow and submerged so the scope doesn't bob around that much.

Start the stopwatch when the target first hits the line with the bow.

Take the time to ID the unit, particularly in regards to the length of it in meters. Or just estimate the length of it by eye.

When the stern finnishes crossing the line, stop the stopwatch.
Take the time interval in seconds.

Unit speed is length in meters divided by time interval in seconds, so the division results in meters per second.

Speed in knots is 1.94 times that. So easily multiply by 2 for government work. Good enough.

[ChaosDuck7]

Originally Posted by Pisces

Really estimating it would be done by looking at the bow wave. The bigger it is the faster it is.

The following is not really estimating, more measuring. But since you need the length of the ship, which depends on the ID of it, it might still be considered as such:

Set periscope/uzo to 0 or 180 degrees bearing.

Turn uboat until the unit to be measured is almost right in front of the centerline. Make sure you stopped turning, and have rudder amidship, before it crosses. (DON'T turn the scope anymore)

Own speed doesn't affect the duration of the measurement, but better to do it slow and submerged so the scope doesn't bob around that much.

Start the stopwatch when the target first hits the line with the bow.

Take the time to ID the unit, particularly in regards to the length of it in meters. Or just estimate the length of it by eye.

When the stern finnishes crossing the line, stop the stopwatch.
Take the time interval in seconds.

Unit speed is length in meters divided by time interval in seconds, so the division results in meters per second.

Speed in knots is 1.94 times that. So easily multiply by 2 for government work. Good enough.

Awesome, that was what I was looking for.

Im wondering if the bow wave that you are talking about is accurately represented in SH3? A quick and dirty speed estimate would be useful sometimes .

[Pisces]

Probably not in all it's physical details, but as a rough approximation I'm sure it suffices. More white = more speed.

[ChaosDuck7]

Originally Posted by Pisces

Probably not in all it's physical details, but as a rough approximation I'm sure it suffices. More white = more speed.

ok another question

ive been looking and apparently the u-jagd chronometer is also a really good way of estimating speed.

Is there a mod that adds a ujagd that is compatible with hitmans optics and gwx3 gold?