<prompt> Rennell akapinda muRoyal Navy semudhara wemumvura pazera remakore gumi nemana pasi paKaputeni Hyde Parker, uyo akanga ari mubasa rekugadzira frigate yakasunungurwa muna October 1757 pakutanga kweHondo yeMakore Manomwe. Akanga aripo paKupamba paCherbourg  <response>: 1758, uye muhondo ine njodzi yeSaint Cast mugore rimwe chetero. Muna 1760, akaenda kuEast India, uye akashanda ari pasi paKaputeni Hyde Parker mumakore matatu akatevera, paakaona basa rinoshanda, kusanganisira kuderedza kuPondicherry. Akakurumidza kuziva dzidziso uye muitiro wokunzvera gungwa, uye, pamusana pokugona kwake munyaya iyi, Parker akapa mabasa ake kuEast India Company. Akashanda kwegore rimwe ari mungarava yekambani yacho yaienda kuPhilippines, nechinangwa chokutanga mabasa matsva okutengeserana nevanhu vomunzvimbo dzaiva pakati. Rennell akaperekedza hydrographer Alexander Dalrymple ndokudhirowa machati akati wandei nemapurani emahombekombe parwendo mu Cuddalore 175962, London 1762-63 uye Neptune 176364. 