Course to Steer - half an hour of tide

This video is designed to complement the content of this page - www.pzsc.org.uk/shorebased/coursetosteer/
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[@ratusbagus]

Hi, the most difficult part of this IMO is subsequent working out of SOG and DTG. I think it's a shame the video stops short of how to do this with half tidal hour vectors.

[@pzsc]

Ratus Bagus there is a bit on this here - pzsc.org.uk/shorebased/coursetosteer/ these are the webpages that go with the videos.

[@ratusbagus]

@@pzsc Thanks but the part thats fuzzy to me is....
where I need to reduce the triangle to keep it on the chart. So I half the boat speed > and half the Tidal Stream rate/length >>> and the triangle fits and the intercept falls just past the waypoint. CTS is fine. Happy with Leeway and Compass (no probs seem to want Deviation).
Now I need to work out SOG and Time to Go....I think I double my groundtrack start>>intercept for SOG (?) divide it by the distance to go (which didn't get scaled) and multiply by 60.
This is not obvious to me, but thats what I think. I can never see this covered anywhere.
What does the panel think?
Thanks Bill