Charts. Red Sea, sheet 5, scale 1° long.=6 in.; with insets, Asab Bay, from Italian surveys in 1880 and 1886, with additions from surveys by W. S. de Kantzon, 1869, scale naut. m.=0.45 in.; Small Strait, Strait of Bab el Mandeb, from British survey in 1874, scale naut. m.=1 in.; chart 2816.