The following article examined elevated self-esteem as a function of a 10-day developmental voyage. Two studies were conducted. Study 1 demonstrated that participants who completed the voyage experienced elevated self-esteem. Study 2 replicated and extended these results insofar as it revealed that (a) elevated self-esteem was maintained 12 months following the voyage; and (b) increasing levels of perceived self-efficacy and belonging (as assessed on the last day of the voyage), but not social support, each made a unique contribution to these effects. Together, these findings provide converging evidence to suggest that a 10-day developmental voyage upon the Spirit of New Zealand promotes elevated self-esteem that is maintained over time, and that perceived self-efficacy and belonging contribute to this outcome.