On a windows laptop using Chrome (premium subs) the Voyage duration shows as a thin white line with start and finish in yellow boxes that users can slide across the row of 10 days in a black bar underneath to plan the best weather window - this is great.
However these two rows do not match the important distance scale which sits above the all important wind forecast below. Perhaps these top 2 elements could be formatted differently (eg same heights) or repositioned away from the distance and wind/temp etc forecast below for greater clarity and ease of use?