Imray Chart 100 covers the North Atlantic from Brazil to Newfoundland and Gibralter to the Caribbean at a scale of 1:7,600,000. It has been constructed on a conical projection which means that Great Circle tracks can be plotted as straight lines rather than curves.
This chart shows the main trend of contours, limits of ice, magnetic variations and key routes as identified by DM Street.
On the reverse side are notes on the routes and small wind rose charts, with accompanying charts showing excessive wave heights and storm frequencies for the months that yachts cross the Atlantic: April to July and October to December.
Chart 100 is an important companion for the Atlantic yachter on passage, and an excellent source of planning information.
Scale 1:7,600,000 WGS 94 Datum
On water resistant paper the chart is 44" x 31" and folds for storage in a 9 1/4 x 13" plastic cover.