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boat speed in this section: through the water or over ground

Forum - Electronic Navigation and Communications - boat speed in this section: through the water or over ground
Module Content - Sea Talks2
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Conan Hom
Lexington, MA, USA
Crew Level 0
Status: Sailor
Qualified days: 8
boat speed in this section: through the water or over ground
Posted 2016, Nov 13 19:02
To be technically accurate as possible which one would be preferable for this section assuming you can measure both?
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Wilson Mattos
Tampa, FL, USA
Captain Level III
Status: Big Time Sailor
Qualified days: 50
Reply 2018, Feb 06 10:03
I found the material was missing the explanation of why Speed Through Water is used instead of SOG to measure true wind, so I went to searching for more information and found this forum thread, which really cleared things up for me: http://www.ybw.com/forums/showthread.php?474209-Raymarine-True-amp-Apparent-Wind-calculation I think it would be useful to add a discussion about "Ground Wind" versus "True Wind" and why each matters (and differs) to make the chapter more clear.
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Elpidio Manuel Alvarenga
Buenos Aires, Argentina
Crew Level 0
Status: Sailor
Qualified days: 3
Reply 2018, May 03 17:22
Thank you very much, Wilson! That forum really clarifies things.
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