The comparison has limits. Voluntary solo sailing, even in its most extreme forms, takes place on a vessel equipped with navigation instruments, communication technology, food and water supplies, and the knowledge that the journey has a planned ending. The psychological frame of voluntary extreme sport is fundamentally different from the psychological frame of involuntary survival emergency. A solo sailor who experiences a bad night knows that the next day will still be part of the same planned voyage. Poon Lim, during much of his ordeal, had no way of knowing whether the next day would bring rescue or continued drift or death.
What the voluntary solo sailing literature does illuminate, in ways that are applicable to the involuntary solitary survival context, is the specific quality of the isolation itself. The absence of other human consciousness — of the social stimulation that comes from other people’s eyes, voices, responses — produces effects on cognition and perception that the accounts of long solo sailors consistently describe: the heightened awareness of the non-human environment (wind, water, the behavior of birds, the color and texture of the sea surface), the tendency for time perception to become fluid and difficult to track without external social anchoring, the specific comfort that any consistent sensory routine provides against the formlessness of days without scheduled social interaction.
Poon Lim’s practical routines — the fishing, the water management, the bird observation, the swimming — served psychological functions as well as practical ones. The imposition of structure on unstructured time is a recognized psychological coping mechanism in contexts of extreme isolation; maintaining a consistent daily pattern of activities provides the kind of temporal anchoring that social contact would normally supply. The counting of moons, the morning and evening swims, the systematic maintenance of the survival tools — these were not just survival activities. They were, in the language of contemporary psychological understanding, behavioral strategies for maintaining cognitive function and temporal orientation in an environment that offered no external social structure.