500t Self-Propelled Fuel Barges · Naval logistics system — series of 500-tonne self-propelled fuel/bunker barges for the Indian Navy

The 500t self-propelled fuel barges are a series of small bunkering vessels built for the Indian Navy to deliver fuel oil and diesel to warships at anchorage and at naval bases — a low-profile but operationally vital part of the fleet logistics chain. Naval fuel barges keep surface combatants bunkered without tying up main berths or requiring large tankers, sustaining readiness across the Navy's coastal commands and forward bases. The programme was pursued as a Make-in-India shipbuilding acquisition, with the Indian Navy ordering a series of 500-tonne-class self-propelled fuel barges built at domestic yards (including state-owned Cochin Shipyard Limited / GRSE and qualifying private yards), reflecting the Navy's push to build even logistics craft indigenously. Each barge carries on the order of 500 tonnes of liquid fuel (diesel/oil), is self-propelled (with a modest engine for harbour and short coastal transits), and is crewed by a small naval or civilian crew. While individually unremarkable, the craft are strategically important because they keep India's surface fleet — including the P17A frigates and carriers — supplied with fuel at distributed bases, and they test the Indian civilian shipbuilding base's ability to meet naval-spec requirements at modest size.