In the full view the wooden structure was recognized as the deck beam of a ship which had been probably sunk a long time ago, when the area had been submerged under the sea water of the Bay of Bengal.

After this incident the village was called by its new name - Daisai - 'Dai' being the easier and aberrated form of the Sanskrit name Dadhi and 'Sai' being the deck beam of the sunken ship.

[1] Till the year 2000, small scale industry as Iron made home utensils were manufactured that gave employment to many villagers.

Since income from agricultural land was not sufficient for dwelling, many villagers migrated to different parts of India as an unskilled labor for their livelihood.

An Agricultural Credit Society (Daisai Krishi Unnyan Samiti Ltd.) was formed in 1952 by Kalipada Paria, and his two friends, Gobinda Prasad Mandal and Bhuthanath Ghorai.