What does it mean for south of due west?












1















I was solving an astronomy problem which said that "south of due west".
This could be interpreted in two different ways and I don't know which one is correct. Is 'south of' on that phrase idiom? Or that's means southwest?










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  • Yes, it means "southwest". Just a bit to the south from the westerly direction.

    – CowperKettle
    3 hours ago











  • Well, it could be "West SouthWest" or "SouthWest" or "South SouthWest" as these are points on the compass, or it could be 269 degrees...

    – Solar Mike
    3 hours ago
















1















I was solving an astronomy problem which said that "south of due west".
This could be interpreted in two different ways and I don't know which one is correct. Is 'south of' on that phrase idiom? Or that's means southwest?










share|improve this question









New contributor




Fafa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





















  • Yes, it means "southwest". Just a bit to the south from the westerly direction.

    – CowperKettle
    3 hours ago











  • Well, it could be "West SouthWest" or "SouthWest" or "South SouthWest" as these are points on the compass, or it could be 269 degrees...

    – Solar Mike
    3 hours ago














1












1








1








I was solving an astronomy problem which said that "south of due west".
This could be interpreted in two different ways and I don't know which one is correct. Is 'south of' on that phrase idiom? Or that's means southwest?










share|improve this question









New contributor




Fafa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












I was solving an astronomy problem which said that "south of due west".
This could be interpreted in two different ways and I don't know which one is correct. Is 'south of' on that phrase idiom? Or that's means southwest?







meaning phrase-meaning technical






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New contributor




Fafa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









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edited 2 hours ago









SamBC

5,540325




5,540325






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asked 3 hours ago









FafaFafa

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Fafa is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






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Check out our Code of Conduct.













  • Yes, it means "southwest". Just a bit to the south from the westerly direction.

    – CowperKettle
    3 hours ago











  • Well, it could be "West SouthWest" or "SouthWest" or "South SouthWest" as these are points on the compass, or it could be 269 degrees...

    – Solar Mike
    3 hours ago



















  • Yes, it means "southwest". Just a bit to the south from the westerly direction.

    – CowperKettle
    3 hours ago











  • Well, it could be "West SouthWest" or "SouthWest" or "South SouthWest" as these are points on the compass, or it could be 269 degrees...

    – Solar Mike
    3 hours ago

















Yes, it means "southwest". Just a bit to the south from the westerly direction.

– CowperKettle
3 hours ago





Yes, it means "southwest". Just a bit to the south from the westerly direction.

– CowperKettle
3 hours ago













Well, it could be "West SouthWest" or "SouthWest" or "South SouthWest" as these are points on the compass, or it could be 269 degrees...

– Solar Mike
3 hours ago





Well, it could be "West SouthWest" or "SouthWest" or "South SouthWest" as these are points on the compass, or it could be 269 degrees...

– Solar Mike
3 hours ago










1 Answer
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active

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4














Look at a compass rose.



enter image description here



Look at W for west. Now move 'southwards' (due south), which is anticlockwise1 in this case, from the point for west. Somewhere in that region is "due south of west". You would expect it to be no nearer south than it is to west, as that would be "due west of south". Conventions vary, but I would tend to interpret "due south of west" WSW, or west-south-west, which is actually due west of south west. It might mean south-west, of course, or if you use a traditional mariner's compass (the compass rose of which has another degree of subdivision, for a total of 32 points), it might mean "west by south" (WbS), the point between W and WSW. Unless you have a clear idea of what the conventions of the text are, it could be any point anticlockwise of west and not anticlockwise of south-west.





1: In this case it is anticlockwise; 'southwards' from east would be clockwise.






share|improve this answer


























  • There are more than 32 divisions on a compass...

    – Solar Mike
    2 hours ago











  • @SolarMike: I meant the traditional compass rose configurations; have clarified.

    – SamBC
    2 hours ago











  • Don't mariners also use "points" ? ie 3 points South of due West... Unless I read some seriously bad books...

    – Solar Mike
    2 hours ago













  • Yes. Those 32 divisions are the "points". 3 points south of due west would be south-west by south. They later added half-points, so you could say "half a point west of south-west", and eventually quarter-points, giving 128 directions on the compass. I don't know if they've switched to using degrees nowadays; I know less about modern sailing than 19th century and earlier sailing.

    – SamBC
    2 hours ago











  • You may find figure 39 in this link illuminating, perhaps the whole thing... : zapatopi.net/kelvin/papers/…

    – Solar Mike
    2 hours ago











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









4














Look at a compass rose.



enter image description here



Look at W for west. Now move 'southwards' (due south), which is anticlockwise1 in this case, from the point for west. Somewhere in that region is "due south of west". You would expect it to be no nearer south than it is to west, as that would be "due west of south". Conventions vary, but I would tend to interpret "due south of west" WSW, or west-south-west, which is actually due west of south west. It might mean south-west, of course, or if you use a traditional mariner's compass (the compass rose of which has another degree of subdivision, for a total of 32 points), it might mean "west by south" (WbS), the point between W and WSW. Unless you have a clear idea of what the conventions of the text are, it could be any point anticlockwise of west and not anticlockwise of south-west.





1: In this case it is anticlockwise; 'southwards' from east would be clockwise.






share|improve this answer


























  • There are more than 32 divisions on a compass...

    – Solar Mike
    2 hours ago











  • @SolarMike: I meant the traditional compass rose configurations; have clarified.

    – SamBC
    2 hours ago











  • Don't mariners also use "points" ? ie 3 points South of due West... Unless I read some seriously bad books...

    – Solar Mike
    2 hours ago













  • Yes. Those 32 divisions are the "points". 3 points south of due west would be south-west by south. They later added half-points, so you could say "half a point west of south-west", and eventually quarter-points, giving 128 directions on the compass. I don't know if they've switched to using degrees nowadays; I know less about modern sailing than 19th century and earlier sailing.

    – SamBC
    2 hours ago











  • You may find figure 39 in this link illuminating, perhaps the whole thing... : zapatopi.net/kelvin/papers/…

    – Solar Mike
    2 hours ago
















4














Look at a compass rose.



enter image description here



Look at W for west. Now move 'southwards' (due south), which is anticlockwise1 in this case, from the point for west. Somewhere in that region is "due south of west". You would expect it to be no nearer south than it is to west, as that would be "due west of south". Conventions vary, but I would tend to interpret "due south of west" WSW, or west-south-west, which is actually due west of south west. It might mean south-west, of course, or if you use a traditional mariner's compass (the compass rose of which has another degree of subdivision, for a total of 32 points), it might mean "west by south" (WbS), the point between W and WSW. Unless you have a clear idea of what the conventions of the text are, it could be any point anticlockwise of west and not anticlockwise of south-west.





1: In this case it is anticlockwise; 'southwards' from east would be clockwise.






share|improve this answer


























  • There are more than 32 divisions on a compass...

    – Solar Mike
    2 hours ago











  • @SolarMike: I meant the traditional compass rose configurations; have clarified.

    – SamBC
    2 hours ago











  • Don't mariners also use "points" ? ie 3 points South of due West... Unless I read some seriously bad books...

    – Solar Mike
    2 hours ago













  • Yes. Those 32 divisions are the "points". 3 points south of due west would be south-west by south. They later added half-points, so you could say "half a point west of south-west", and eventually quarter-points, giving 128 directions on the compass. I don't know if they've switched to using degrees nowadays; I know less about modern sailing than 19th century and earlier sailing.

    – SamBC
    2 hours ago











  • You may find figure 39 in this link illuminating, perhaps the whole thing... : zapatopi.net/kelvin/papers/…

    – Solar Mike
    2 hours ago














4












4








4







Look at a compass rose.



enter image description here



Look at W for west. Now move 'southwards' (due south), which is anticlockwise1 in this case, from the point for west. Somewhere in that region is "due south of west". You would expect it to be no nearer south than it is to west, as that would be "due west of south". Conventions vary, but I would tend to interpret "due south of west" WSW, or west-south-west, which is actually due west of south west. It might mean south-west, of course, or if you use a traditional mariner's compass (the compass rose of which has another degree of subdivision, for a total of 32 points), it might mean "west by south" (WbS), the point between W and WSW. Unless you have a clear idea of what the conventions of the text are, it could be any point anticlockwise of west and not anticlockwise of south-west.





1: In this case it is anticlockwise; 'southwards' from east would be clockwise.






share|improve this answer















Look at a compass rose.



enter image description here



Look at W for west. Now move 'southwards' (due south), which is anticlockwise1 in this case, from the point for west. Somewhere in that region is "due south of west". You would expect it to be no nearer south than it is to west, as that would be "due west of south". Conventions vary, but I would tend to interpret "due south of west" WSW, or west-south-west, which is actually due west of south west. It might mean south-west, of course, or if you use a traditional mariner's compass (the compass rose of which has another degree of subdivision, for a total of 32 points), it might mean "west by south" (WbS), the point between W and WSW. Unless you have a clear idea of what the conventions of the text are, it could be any point anticlockwise of west and not anticlockwise of south-west.





1: In this case it is anticlockwise; 'southwards' from east would be clockwise.







share|improve this answer














share|improve this answer



share|improve this answer








edited 33 mins ago









J.R.

98.8k8127244




98.8k8127244










answered 2 hours ago









SamBCSamBC

5,540325




5,540325













  • There are more than 32 divisions on a compass...

    – Solar Mike
    2 hours ago











  • @SolarMike: I meant the traditional compass rose configurations; have clarified.

    – SamBC
    2 hours ago











  • Don't mariners also use "points" ? ie 3 points South of due West... Unless I read some seriously bad books...

    – Solar Mike
    2 hours ago













  • Yes. Those 32 divisions are the "points". 3 points south of due west would be south-west by south. They later added half-points, so you could say "half a point west of south-west", and eventually quarter-points, giving 128 directions on the compass. I don't know if they've switched to using degrees nowadays; I know less about modern sailing than 19th century and earlier sailing.

    – SamBC
    2 hours ago











  • You may find figure 39 in this link illuminating, perhaps the whole thing... : zapatopi.net/kelvin/papers/…

    – Solar Mike
    2 hours ago



















  • There are more than 32 divisions on a compass...

    – Solar Mike
    2 hours ago











  • @SolarMike: I meant the traditional compass rose configurations; have clarified.

    – SamBC
    2 hours ago











  • Don't mariners also use "points" ? ie 3 points South of due West... Unless I read some seriously bad books...

    – Solar Mike
    2 hours ago













  • Yes. Those 32 divisions are the "points". 3 points south of due west would be south-west by south. They later added half-points, so you could say "half a point west of south-west", and eventually quarter-points, giving 128 directions on the compass. I don't know if they've switched to using degrees nowadays; I know less about modern sailing than 19th century and earlier sailing.

    – SamBC
    2 hours ago











  • You may find figure 39 in this link illuminating, perhaps the whole thing... : zapatopi.net/kelvin/papers/…

    – Solar Mike
    2 hours ago

















There are more than 32 divisions on a compass...

– Solar Mike
2 hours ago





There are more than 32 divisions on a compass...

– Solar Mike
2 hours ago













@SolarMike: I meant the traditional compass rose configurations; have clarified.

– SamBC
2 hours ago





@SolarMike: I meant the traditional compass rose configurations; have clarified.

– SamBC
2 hours ago













Don't mariners also use "points" ? ie 3 points South of due West... Unless I read some seriously bad books...

– Solar Mike
2 hours ago







Don't mariners also use "points" ? ie 3 points South of due West... Unless I read some seriously bad books...

– Solar Mike
2 hours ago















Yes. Those 32 divisions are the "points". 3 points south of due west would be south-west by south. They later added half-points, so you could say "half a point west of south-west", and eventually quarter-points, giving 128 directions on the compass. I don't know if they've switched to using degrees nowadays; I know less about modern sailing than 19th century and earlier sailing.

– SamBC
2 hours ago





Yes. Those 32 divisions are the "points". 3 points south of due west would be south-west by south. They later added half-points, so you could say "half a point west of south-west", and eventually quarter-points, giving 128 directions on the compass. I don't know if they've switched to using degrees nowadays; I know less about modern sailing than 19th century and earlier sailing.

– SamBC
2 hours ago













You may find figure 39 in this link illuminating, perhaps the whole thing... : zapatopi.net/kelvin/papers/…

– Solar Mike
2 hours ago





You may find figure 39 in this link illuminating, perhaps the whole thing... : zapatopi.net/kelvin/papers/…

– Solar Mike
2 hours ago










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