Cartaz System (Portuguese Naval Pass System) - UPSC Notes

A naval pass/license system introduced by the Portuguese to control and monopolize maritime trade in the Indian Ocean.

📌 Cartaz System (Portuguese Naval Pass System)

🕰️ Period of Use:

Early 1500s to late 1600s (introduced during the governorship of Francisco de Almeida)


What is the Cartaz System?

  • A naval pass/license system introduced by the Portuguese to control and monopolize maritime trade in the Indian Ocean.

  • The word Cartaz is derived from the Portuguese word carta (meaning “document” or “letter”).


🛑 Key Features:

Feature Description
📝 Mandatory Pass All non-Portuguese ships had to obtain a Cartaz (license) to sail in the Indian Ocean.
💰 Fee-Based Ships had to pay for the pass, providing revenue to the Portuguese.
🚢 Details Required Ship name, crew list, cargo list, destination — all had to be declared.
⚔️ Enforced by Navy Ships sailing without a Cartaz were considered illegal and were attacked, looted, or sunk.
Restriction on Ports The system restricted trade to Portuguese-approved ports like Goa, Cochin, and Bassein.

🎯 Purpose of the Cartaz System:

  • 📦 Monopolize Spice Trade – Exclude Arab, Indian, and other Asian traders.

  • Assert Naval Dominance – Make Portuguese the masters of the Indian Ocean.

  • 💵 Generate Revenue – Through taxes and passes.

  • 🔗 Enforce Political Control – Over local rulers and merchants.


📉 Impact:

Positive for Portuguese Negative for Others
Revenue & naval control Destroyed centuries-old Arab trade routes
Decline of rival ports (Calicut) Angered local rulers like the Zamorin
Strengthened ports like Goa Conflict with Egyptians, Ottomans, Gujaratis

🧠 MCQ for Practice:

Q. What was the "Cartaz System" introduced by the Portuguese in the Indian Ocean trade?
A. A naval code of conduct
B. A maritime insurance policy
C. A pass system to control sea trade and navigation
D. A religious conversion campaign for seafarers

Answer: C



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