 Nyora kupfuurira kweiyi ndima - gore rokuberekwa kwaWestcott harizivikanwi, asi rinoratidzika kuva rakanga riri pakati pa 1752 na 1753, uye rakanga riri sezvingabvira muna 1753. Akanga ari mwanakomana womubiki muHoniton, Devon, uye akabhabhatidzwa musi wa 24 April 1753. Akabatana neNavy pane imwe nguva pakati pa1765 na1768, uye pakazosvika 1768 akanga achishumira somukuru mukuru wengarava. Akapedza makore mashanu ari muSolebay, achikwira kusvika pachinzvimbo chechikuru, uye achipedza nguva ari pasi paGeorge Vandeput. Akabva aenda kuUnited States, kwaakapedza makore matatu akatevera achidzidziswa naSamuel Barrington naJohn Leveson-Gower. Akapasa bvunzo dzake dzekuva lieutenant musi wa 10 Ndira 1776 uye akagamuchira kukwidziridzwa kwake kune chinzvimbo ichocho musi wa 6 Nyamavhuvhu 1777, achienda mungarava. Ari pasi pomutungamiriri wake, Samuel Granston Goodall, Valiant akanga aripo paHondo Yokutanga yeUshant musi wa 27 Chikunguru 1778, mushure mezvo Westcott na Valiant vakabatana nehondo pasi paSir Charles Hardy muna 1779. Akanga aripo neVice-Admiral George Darbys fleet pavakabvisa Gibraltarmuna April 1781. 