Over five millennia ago thrived an advanced civilisation in the upper reaches of India along the banks of the river Indus. Its people were master engineers and builders, as shown by innumerable archaeological discoveries of the Indus sites. Among the achievements of these early Indians was the construction of a Tidal dock at Lothal, one of the most prominent cities of the ancient Indus Valley or Harappan Civilisation located in the modern state of Gujarat and dating from 2400 BCE.
In fact, it is widely believed by Indologists and researchers of history that the art of navigation was well known and practiced by ancient Indians, a fact that is supported by numerous Rig Vedic hymns with reference to large water bodies and ships sailing across them.
A dock is an enclosed area of water used for loading, unloading, building or repairing boats or ships, usually on or close to a shore.
Lothal’s dock was believed to have connected the city to an ancient course of the Sabarmati river on the trade route between Harappan cities in Sindh and the peninsula of Saurashtra when the surrounding Kutch desert of today was part of the Arabian Sea and was a very important trade centre, that had established trade links going as far west as Asia and Africa.