

2 routings ?

I am a beginner with sailing routers, and doing VR Vendée Globe.
With one Vendée Globe Zozo routing window chart open (no probs, refreshes fine), if I click in VR Dashboard on the RT icon (tab most to left), it opens another routing window. Often the 2 routes proposed (2 windows) are not the same (but close) why? parameters seem identical, both routings are from same correct boat virtual position & same time.
Thanks for checking a neophyte's question!


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