The documentary record that exists independent of the McCunn account — the uboat.net shipping loss records, the British merchant navy records, the Gazette entry for the British Empire Medal, the US immigration documentation — provides the factual skeleton on which the biographical account is built. The details of the ordeal itself — the precise sequence of survival innovations, the psychological texture of the experience, the specific encounters with passing ships and aircraft — derive ultimately from Poon Lim’s own testimony, given in the weeks and months after his rescue and subsequently elaborated in interviews over the following decades.
This is the nature of the evidence for events that happened on a small raft in the South Atlantic in 1942 and 1943: there was one witness, and his account was given from memory, under conditions of post-trauma recovery, and through the mediating effect of language (his primary language was Chinese, and his account was given to British and American interlocutors in the immediate aftermath) and of the specific demands of official testimony versus casual recollection versus the later reconstruction required for a biography. None of this makes the account unreliable in the broad strokes. It means that the specific details are held at the level of reported testimony rather than independently documented fact.
## Wenchang, Hainan, and the Family He Left Behind
One of the quieter losses in Poon Lim’s story is the family in Wenchang County that he could not return to. He had left Hainan in 1936, a seventeen- or eighteen-year-old sent away by his father to remove him from the reach of conscription. The war, the survival ordeal, the years in the United States — all of this accumulated distance between the man he had become and the community he came from.