The main idea of this document is that many people died during the ship's journey from São Tomé to Barbados. Captain Thomas Phillips describes that disease killed most of the enslaved Africans and some crew, and that this ruined the voyage financially. He names the diseases as ‘white flux’ (likely dysentery) and smallpox and explains how they spread onboard. He also shows how the Royal African Company and ship owners lost money when slaves died. Throughout, he writes in a cold and sometimes cruel way that treats the enslaved people as cargo rather than human beings.
This document comes from a ship captain who worked for the Royal African Company, so his point of view reflects the interests of slave traders and shipowners. His purpose was to record the voyage, explain the causes of death, and justify financial losses to the company and owners. The historical situation is the late seventeenth century and the document shows how disease, tight quarters, and long voyages shaped the Middle Passage. The audience was likely company officials and other merchants who needed to know what went wrong and how to avoid it. Because the writer is a participant and focused on money, his account is useful but also biased and dehumanizing.
You can use this document to support an argument that the Middle Passage caused high death rates and huge human suffering and that traders often saw enslaved people as financial losses rather than people. It gives direct numbers, disease names, and details about how the ship cared for sick people, which are strong factual details for an essay. However, the captain’s voice leaves out the enslaved people's own experiences, resistance, and feelings, and he often uses insulting language that hides cruelty. To evaluate accuracy, historians compare such journals with slave narratives, ship logs, port records, and archaeological evidence to get a fuller picture. Overall, this account is generally accurate about disease and mortality but must be used with other sources to avoid the trader's bias and to understand the full human reality of the Middle Passage.