The wallet contains Ships' Boats Charts and drawing materials for use in life boats and rafts. The 6 charts, number 5211 to 5216, covers all the oceans and shows the coastline, the approximate strength and directions of prevailing winds and currents, limits of ice, and isogonic lines. On the back of the chart is information on the elementary use of a chart, remarks on management of boats and on wind, weather and currents. 260 x 210 x 15 mm. Plastic wallet.