diff --git a/src/scenes/ShipDeckScene.js b/src/scenes/ShipDeckScene.js
index c47fbdd..dfb67f3 100644
--- a/src/scenes/ShipDeckScene.js
+++ b/src/scenes/ShipDeckScene.js
@@ -158,6 +158,15 @@ export default class ShipDeckScene extends Phaser.Scene {
             this.showMessage(`Fuel supply: ${barrelCount} barrels (${this.inventory.fuel} units). Needed for boiling down whale blubber.`);
         });
         this.fuelBarrels.push(interactiveZone);
+
+        // Debug: Draw center lines for fuel barrel group
+        const centerLines = this.add.graphics();
+        centerLines.lineStyle(2, 0xFF0000, 0.8);
+        // Horizontal center line
+        centerLines.lineBetween(zoneX - zoneWidth / 2, deckVerticalCenter, zoneX + zoneWidth / 2, deckVerticalCenter);
+        // Vertical center line
+        centerLines.lineBetween(zoneX, zoneY - zoneHeight / 2, zoneX, zoneY + zoneHeight / 2);
+        this.fuelBarrels.push(centerLines);
     }
 
     createOilBarrels() {