Radha Kumud Mukhopadhyay, Indian Shipping — Book 1, Part 2… (1912)
“ That a fleet so numerous should have been collected in so short a time is apt to appear at first sight incredible. But as the Punjab country is full of navigable rivers, on which all the intercourse among the natives was carried on, it abounded with vessels ready constructed to the conqueror's hands, so that he might easily collect that number. If we could give credit to the account of the invasion of India by Semiramis, no fewer than 4,000 vessels were assembled in the Indus to oppose her fleet (Diod. Sicul., lib. ii., cap. 74) . ”
