context: Halpin was promoted to second mate of Salem, a wool clipper on the Australia run, before he transferred over from sail to steam ships.
source: Halpin believed steam was the future of shipping and became first officer in Khersonese.
reference_original: Halpin acreditava que vapor era o futuro do transporte marítimo e tornou-se o primeiro oficial de Khersonese.
reference_flipped: Halpin acreditava que vapor era o futuro do transporte marítimo e tornou-se a primeira oficial de Khersonese.