supply vessel; replenishment ship
A naval auxiliary ship that provides fuel, ammunition, provisions, and other supplies to warships at sea. The term 'replenishment oiler' specifically refers to a vessel primarily carrying fuel.
The Maritime Self-Defense Force's supply vessel provides fuel and supplies to the fleet.
This replenishment ship can resupply multiple vessels at sea simultaneously.
Compound of 補給 (supply, replenishment) + 艦 (warship). The term follows standard Sino-Japanese word formation.