Dhows are traditional wooden sailing ships from the Arabian Peninsula whose triangular lateen sails let merchants ride the seasonal monsoon winds across the Indian Ocean, making them a core transportation technology behind the growth of Indian Ocean trade from c. 1200 to c. 1450 (AP World Unit 2, Topic 2.3).
A dhow is a wooden sailing vessel that originated in the Arabian Peninsula and dominated Indian Ocean trade and fishing for centuries. Its signature feature is the lateen sail, a triangular sail that can catch wind from multiple angles instead of only from directly behind. That design made dhows perfectly matched to the Indian Ocean's monsoon winds, which blow one direction in summer and reverse in winter. Sail out with one monsoon, trade at an entrepôt, sail home with the other.
For AP World, dhows are one of the 'improved transportation technologies' the CED says drove the increased volume and geographic range of trade after 1200 (alongside the compass, the astrolabe, and larger ship designs). Arab and Persian merchants used dhows to carry luxury goods between East Africa's Swahili Coast, the Arabian Peninsula, India, and Southeast Asia, which helped power trading cities and merchant diasporic communities all along those routes.
Dhows live in Unit 2 (Networks of Exchange, 1200-1450), specifically Topic 2.3 on the Indian Ocean trade routes. They support all three learning objectives there. For 2.3.A, dhows are a concrete example of the transportation innovations that caused trade networks to grow. For 2.3.B, dhows physically carried the Arab and Persian merchants who built diasporic communities along the Swahili Coast and in South Asia, spreading Islam and cultural exchange as effects of trade. For 2.3.C, dhows are the perfect evidence for how environmental knowledge (the monsoon winds) shaped trade, because the ship's whole design exists to exploit that environment. Thematically, this is Technology and Innovation plus Humans and the Environment, and it gives you a specific, nameable piece of evidence instead of a vague 'better ships' claim.
Lateen Sail (Unit 2)
The lateen sail is the technology; the dhow is the ship built around it. Its triangular shape lets a ship sail at an angle to the wind, which is exactly what you need when monsoons only blow in two directions. Name both together for stronger MCQ and short-answer evidence.
Monsoon Winds (Unit 2)
Dhows and monsoons are a package deal. The CED's environmental-factors objective (2.3.C) asks you to explain how knowledge of the monsoons enabled trade, and dhows are the proof that merchants engineered their ships around that seasonal wind pattern.
Diasporic Communities (Unit 2)
Monsoons forced merchants to wait months in port for the winds to reverse, and dhow crews waiting out the season is a big reason Arab and Persian merchant communities took root along the Swahili Coast and in Indian port cities. The ship's schedule literally created the cultural exchange.
Indian Ocean Trade Network (Unit 2)
Dhows were the workhorse vessel of this entire network, linking Swahili city-states, Gujarat, and Southeast Asian entrepôts. When a question asks what caused the network's growth after 1200, dhows plus the compass and astrolabe are your go-to technology evidence.
Dhows show up most often in multiple-choice questions about Indian Ocean trade technology. Common stems ask which vessel dominated Indian Ocean trade from 1200 to 1450, which shipbuilding technology enhanced long-distance commerce, or whether dhows represent continuity or change in trade technology over time (they're a continuity, since they predate 1200 and kept being used). No released FRQ has used the term verbatim, but dhows are excellent specific evidence for an LEQ or SAQ on the causes of trade growth (LO 2.3.A) or the role of environmental factors (LO 2.3.C). The move you want to make is pairing the ship with the wind. Don't just say 'dhows existed.' Say dhows used lateen sails to harness predictable monsoon winds, which increased the volume and range of Indian Ocean trade.
Both are Unit 2 Indian Ocean ships, but they belong to different traders and arguments. Dhows are smaller Arab and Persian lateen-rigged vessels tied to monsoon navigation and Southwest Asian merchant diasporas. Junks are the large Chinese ships associated with Ming maritime activity, including Zheng He's voyages. If the question is about Arab merchants, monsoons, or the Swahili Coast, think dhow. If it's about Chinese maritime power or massive cargo capacity, think junk.
Dhows are wooden Arab sailing ships with triangular lateen sails, designed to harness the Indian Ocean's seasonal monsoon winds.
On the AP exam, dhows are evidence for the CED's claim that improved transportation technologies increased the volume and geographic range of trade after 1200 (LO 2.3.A).
Dhows are the go-to example for how environmental knowledge of the monsoons shaped Indian Ocean trade (LO 2.3.C).
Because monsoon winds reverse seasonally, dhow merchants often waited months in foreign ports, which helped create Arab and Persian diasporic communities along the trade routes.
Dhows represent continuity, not change, in Indian Ocean trade technology, since they were in use well before 1200 and remained the region's main trading vessel through 1450.
Don't mix up dhows (Arab and Persian, lateen sails, monsoon trade) with junks (large Chinese ships linked to Zheng He's Ming voyages).
A dhow is a traditional wooden sailing ship from the Arabian Peninsula, defined by its triangular lateen sail, that Arab and Persian merchants used to trade across the Indian Ocean. It's tested in Unit 2, Topic 2.3, as a transportation technology behind trade growth from c. 1200 to c. 1450.
No. Dhows existed for centuries before 1200, which is why AP questions often frame them as a continuity in Indian Ocean trade technology rather than an innovation of the period. The change after 1200 was the increased volume and range of trade they supported, helped by the compass, astrolabe, and larger ship designs.
Dhows were Arab and Persian lateen-rigged ships built for monsoon navigation across the Indian Ocean, while junks were the large Chinese vessels associated with Ming maritime activity like Zheng He's voyages. Same ocean, different traders, different exam contexts.
Lateen sails are triangular, so they can catch wind from multiple angles instead of just from behind. That let dhows work with the monsoon winds, which blow toward Asia in summer and toward Africa in winter, making round-trip long-distance trade predictable.
The CED's learning objective 2.3.C says long-distance trade depended on environmental knowledge, especially of the monsoon winds. Dhows are your concrete evidence, since merchants timed dhow voyages to the seasonal wind reversals and designed the ships specifically to ride them.