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Old 17-11-2019, 13:19   #1
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Understanding current arrows

The attached shows a screenshot of OpenCPN showing currents near Point Wilson for the date 11/21 at 8am. I've set OpenCPN to only show current, not tide. The larger arrow appears only when I open the Currents dialog.

Can anyone explain what these arrows are telling me? For instance, north of Pt Wilson there are arrows labeled with 3.6Kn, 3.2, 3.4kn and 112. I think the 112 is a bearing, but at that time the currents should be going out?

So how do you read the data at that point?

How about the data that shows 2.8 and 165 with two arrow at an angle?
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Old 17-11-2019, 13:45   #2
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Re: Understanding current arrows

2.8kts of current flowing 165°?

Arrow direction looks about right for 165
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Old 17-11-2019, 14:39   #3
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Re: Understanding current arrows

Right click on the arrow and it will show more info.


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Old 17-11-2019, 14:48   #4
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Re: Understanding current arrows

Quote:
Originally Posted by dmksails View Post
The attached shows a screenshot of OpenCPN showing currents near Point Wilson for the date 11/21 at 8am. I've set OpenCPN to only show current, not tide. The larger arrow appears only when I open the Currents dialog.

Can anyone explain what these arrows are telling me? For instance, north of Pt Wilson there are arrows labeled with 3.6Kn, 3.2, 3.4kn and 112. I think the 112 is a bearing, but at that time the currents should be going out?

So how do you read the data at that point?

How about the data that shows 2.8 and 165 with two arrow at an angle?

You appear to be using the OTCurrent plugin.


Traditionally wind directions are given based on where they are coming from, but current directions are given based on where they are going to.
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