Kammala jumla mai zuwa: Maclear ya shiga Navy a watan Satumbar 1851 a matsayin ɗan takara a cikin jirgin ruwa, sa'an nan kuma yana ɗauke da babban alamar Commodore Christopher Wyvill, sa'an nan kuma ya umurci tashar Cape. A cikinta ya ga sabis a lokacin
Yaƙe-yaƙe na Xhosa a shekara ta 1851, kuma daga baya, a matsayin mai kula da jirgin ruwa na, ya yi aiki a cikin Baltic da kuma a cikin Bahar Maliya daga 1854 zuwa 1856, yana karɓar, Baltic, Turkiyya, da kuma Crimea, tare da ƙulli don Sevastopol. Ya wuce jarrabawar sa a watan Yulin 1857, kuma ya yi aiki a cikin Red Sea a matsayin mata a lokacin barkewar cutar a Jeddah a 1858.