At anchor in Zanzibar Harbour. Wind NE force 2 with broken cloud and lightning. Barometer 30.09 inches rising to 30.15 inches at noon before falling to 30.02 at 1600 and finishing at 30.06 inches at midnight. Temperature at noon 85F. 0630. Squadron weighed and proceeded. Divers down to recover Bower anchor and cable. 0700. Scrubbed hammocks and washed clothes. 0930. Weighed and shifted berth. 1000. Employed as requisite. 1300. Weighed port anchor. 1330. Employed variously. 1520. Weighed starboard anchor. Proceeded at 85 revolutions. 1600. Shaped course to NE by ½ N at 8.2 knots. 1700. Observed Pemba Island on starboard bow. 1715. Mustered at Quarters. 1910. Altered course to N by E ½ E. 2330. Altered course to NE ½ N at 4 knots. Coal expended 12 tons 8 cwt. Number on sick list 12.