Raymarine True & Apparent Wind calculation

[flaming]

But that is exactly my point, surely even the most basic of sailor should understand that and be able to carry out those calculations in their head? I suspect I'm starting to sound like a bit of a patronising know it all now but if we continue to replace all the thought processes and knowledge that we should possess as sailors with automated instrumentation that just gives us the end product then we de-skill the individual and eventually things become unsafe.

You'd think so, but the number of people over in Scuttlebutt that denied that the tide had any effect on the true wind the last time this came up would suggest otherwise!