Pedzisa mutsara unotevera: Nzvimbo yokuchengetera pfuti yakavakwa muna 1801 paMiddle Head (kuchamhembe kweObelisk Bay) munguva yehondo dzaNapoleon, pamwe chete neimwe paGeorge Head. Fort Phillip yakavakwawo kudzivirira kubva pakupinda kweFrance muna 1804, pamwe chete nokutevera
Kumukira kwavasungwa veCastle Hill gore rimwe chetero. Zvivako zvechigarire zvakavakwa mukati mehafu yekutanga yezana ramakore rechi 19 mukupindura kurwiswa kwekune dzimwe nyika nekutyisidzira kutsva kweumambo hweBritain, kusanganisira mauto eFrance aNapoleon muna 1810, uye Russian Pacific Fleet muma1850 (panguva yeHondo yeCrimea). Munguvayo ngarava mbiri dzehondo dzeAmerica (sloop yehondo "Peacock" uye sloop yehondo "Vincennes") dzakapinda muchiteshi pasina kuziviswa musi wa30 November 1839, pasi pechifukidziro cherima. Kunyange zvazvo kwaingova kushanya kwokuremekedza, chiitiko chacho chakaratidza kuti nzvimbo yacho yaigona kurwiswa uye chakaratidza kuti yainge yakaparadzana uye yakapfuma. Garden Island yakanga ine masvingo akavakwa muma1820, nepo Bradleys Head yakatanga kuvaka muna 1840. Kuvakwa kweFort Denison kwakatanga muna 1841, kunyange zvazvo nhare yacho isina kupedzwa kutozosvikira muna 1857.