Variants of a mold are catalogued separately, so each one has its own sets and minifigs. Check these too if something you expect is missing here.

• 71304pr0001 Sail, Tattered with Hole, Damage Cutouts and Dark Gray Stripes, Crossed Cutlasses Print Pair of this part
• 71306 Sail, Tattered, Damage Cutouts, 3 with Dark Gray Stripes Print this part is a pair of it