Pedzisa mutsara unotevera: Muna 1925, ngarava mbiri idzi dzakagadziridzwa, dzikava nemabhodhoro matsva uye dzikachinjwa kuti dzishandise mafuta. Muna 1932,
hondo yakatanga pakati pePeru neColombia nokuda kwenzvimbo iri musango rinogara richinaya reAmazon. Muna May 1933, "Almirante Grau", ichiperekedzwa nengarava mbiri dzepasi pemvura, yakatumirwa nomumugero wePanama kumuromo werwizi rweAmazon kutsigira mabasa engarava dzehondo dzePeru muAmazon. Zvisinei, hondo yakapera vasati vasvika, naizvozvo "Almirante Grau" nengarava mbiri dzepasi pemvura vakadzokera kuPacific.