A sketch of a ship, from Ajanta mural (ca. 6th century AD), which depicts an ancient Indian ship with high stem and stern and three oblong sails attached to three masts. Steering-oars (double quarter rudders) can also be seen.
Radha Kumud Mukhopadhyay / Radhakumud Mookerji
<p>Indian Shipping by Radha Kumud Mukhopadhyay / Radhakumud Mookerji (1912), Book 1, Part 1, Chapter 2
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<a class="external free" href="https://en.wikisource.org/wiki/Indian_Shipping/Book_1/Part_1/Chapter_2">https://en.wikisource.org/wiki/Indian_Shipping/Book_1/Part_1/Chapter_2</a>