
At a scale of 1:7, 620, 000 this chart covers the North Atlantic from Brazil to Newfoundland & Gibraltar to the Caribbean. It has been constructed on a conical projection that means that Great Circle tracks can be plotted as straight lines rather than curves. The chart shows the main trend of contours, limits of ice, magnetic variations & keys routes as identified by DM Street. On the reverse are notes on the routes & small wind rose charts, with accompanying charts showing excessive wave heights & storm frequencies for the months that yachts cross the Atlantic: April to July & September to December. Chart 100 is an important companion for Atlantic yachtsmen on passage & an excellent source of planning information.