# The journal records reliance on local pilots and monsoon knowledge as navigational fact

Date: 1498

## The fact

Hakluyt-English journal pages print taking of pilots and use of monsoon timing.

It is one event.

## Context

Do not make him the author of monsoon science. Do store printed use of Indian Ocean knowledge.

[Vasco da Gama](/people/vasco-da-gama) Shared work with other named actors remains in the record.

Vasco da Gama’s documented role is bounded by other offices and collaborators named in the sources below. Sharing a field with them is not a reason to drop a documented act, and it is not a reason to assign later consequences done in the name after death.

Conventional years are c. 1460s–1524.

Named person as heading of the dated public instrument. Later editors, museums, printers, or offices share publication. Complex where later carriers are the surviving public file.

## Evidence and sources

Hakluyt Society — Journal of the First Voyage of Vasco da Gama and Cambridge histories of Portuguese expansion independently describe this instrument.

Official or archival record: Hakluyt Society — Journal of the First Voyage of Vasco da Gama (https://www.hakluyt.com/; Hakluyt Society).

## Significance

Printed pilotage is not a unique invention of latitude.

## What is established and what is not

Established as a dated public record of this instrument.

What would change the picture: a contradictory original with a different date or name, or a measured series that can be argued, with lag and alternatives, as a consequence of this instrument rather than of later institutions.

What would change the picture: a contradictory original with a different date or name, or a measured series that can be argued, with lag and alternatives, as a consequence of this instrument rather than of later institutions.

The date is the date of this instrument, not a licence to back-date every later harm or benefit.

Established here: a sourced, dated public instrument with a named contribution by Vasco da Gama.

They are not a public rating.

Vasco da Gama did not file a later UNESCO form, a later Loeb colophon, or a later museum label as a personal act. A portrait or conventional bust is not this mechanism. Allegation, reconstruction, and established occurrence stay distinct.

## People

- Vasco da Gama: https://factrail.ai/people/vasco-da-gama

## Drivers

- Digital Learning Access: https://factrail.ai/drivers/edu-digital-learning-access

## Sources

- https://www.cambridge.org/core/books/cambridge-history-of-the-age-of-atlantic-revolutions/
- https://www.hakluyt.com/

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/vdg-pilotage-knowledge