Khan Jahan Ali or Ulugh Khān (Bengali: উলুগ খান জাহান), was a Muslim saint and the Khan-i-Azam of Khalifatabad (now in Bangladesh).

Initially a noble under the Tughlaq Sultanate, Khan Jahan seems to have migrated to Bengal following the Capture of Delhi by the Timurid Empire led by Timur in 1398.

126 dighis are attributed to him and mosques built during his stay include Gorar, Golakata, Jor-Bangla, Pir Pukur, Satgachia, Monohar, Sukkur Mollick, Nungola, Pathagar and Adina.

[3] Khan was able to acquire a forest area in the Sundarbans as a jagir from Sultan Mahmud Shah of Bengal.

He and his group of sappers embanked the land along streams to keep saltwater out and dug hundreds of tanks (known as dighis) for water storage.

He built numerous mosques here such as Singar, Bibi Begeni, Chunakhola, Ranabijoypur, Nine Dome, Zinda Pir and Reza Khuda as well as the Ghora dighi.

His role as administrator of Khalifatabad did not stop him from also preaching the religion of Islam to the local people which he focused on even more after retiring.

His humanitarian work such as establishment of dighis for clean water was a number of reasons why the local Hindus were attracted to Islam.

[4] He led a simple life and had a number of disciples; most notably, Shaykh Muhammad Tahir (better known as Pir Ali), who is buried near him.

The ship was made by Ananda Shipyard & Slipways Limited and handed to the Bangladesh Navy on 6 November 2014.