INS Poshak is a self-propelled fuel carrier barge built by M/s Shalimar Works, Kolkata for the Indian Navy.

It is an auxiliary ship capable to carry 500 tonnes of fuel.

It has seagoing capabilities and have all essential communication and navigation equipment.

[2] Poshak is first of a series of two barges being built by the Shalimar Works (1980) Ltd.[2][3] M/s Shalimar Works secured the contract in November 2007 to manufacture two barges at a cost of INR 13.95 crores per barge.

[4] The basic design, detail construction design and consultancy for test and trial was provided by M/s Marine Consultants, Selimpur Road Kolkata.