At a scale of 1:7,620,000 this chart covers the North Atlantic from Brazil to Newfoundland and 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 depth contours, limits of ice, magnetic variations and keys routes as identified by Donald M. Street Jr. In the enclosed booklet are pilot charts showing winds, currents and wave height frequencies with accompanying notes on favourable route timings and hurricane risk. This is an essential companion for yachtsmen crossing the Atlantic on passage, and an excellent source of information for forward planning.