At the First Battle of Sirte, both sides were trying to get convoys to their destinations. Both convoys arrived. That permits an argument that each side achieved its operational purpose, even though the running naval action is commonly described as indecisive. The example separates a fleet's assigned mission from a classification based on who won the battle.
Notable Point · 4:24:02-4:24:32
First Sirte and the difference between battle and convoy results
Both sides could complete their convoy missions even when the naval engagement was classified as indecisive.