Which one of the following Indus culture sites gives evidence of a dockyard ?

Lothal, located in modern-day Gujarat, India, is the most significant Indus Valley Civilization site providing evidence of a dockyard. Excavated by S.R. Rao, the site features a large, rectangular baked-brick basin measuring approximately 214 by 36 meters, which is widely identified as the world's first tidal dockyard [t4][t5]. This structure connected the city to the Sabarmati river (or its ancient tributary, the Bhogava), facilitating maritime trade with Mesopotamia and the Persian Gulf [t1][t6]. While some scholars have debated its function, recent geospatial and hydrographic studies reinforce the dockyard theory by confirming the proximity of ancient river courses [t1][t3]. In contrast, Harappa and Mohenjo-daro were major inland urban centers, and Rakhigarhi is known as one of the largest Harappan sites but lacks a maritime dockyard [c1][c3].

Sources

1. [1] https://www.sciencedirect.com/science/article/abs/pii/S0305440324001146
2. [2] Exploring Society:India and Beyond. Social Science-Class VI . NCERT(Revised ed 2025) > Chapter 6: The Beginnings of Indian Civilisation > Town-Planning > p. 90
3. [3] THEMES IN INDIAN HISTORY PART I, History CLASS XII (NCERT 2025 ed.) > Chapter 1: Bricks, Beads and Bones > Harappan Settlements > p. 2