diff --git a/src/scenes/ShipDeckScene.js b/src/scenes/ShipDeckScene.js
index a0e7082..d92403d 100644
--- a/src/scenes/ShipDeckScene.js
+++ b/src/scenes/ShipDeckScene.js
@@ -101,11 +101,18 @@ export default class ShipDeckScene extends Phaser.Scene {
         const verticalSpacing = 75;
         const barrelsPerRow = 5;
 
-        // Calculate group width and center it in left half of deck
+        // Calculate group dimensions
         const groupWidth = (Math.min(barrelCount, barrelsPerRow) * horizontalSpacing);
+        const stackLevels = Math.ceil(barrelCount / barrelsPerRow);
+        const groupHeight = (stackLevels * barrelHeight) + ((stackLevels - 1) * (verticalSpacing - barrelHeight));
+
+        // Center horizontally in left half of deck
         const leftHalfCenter = this.deckLeftX + (this.deckWidth / 4);
         const baseX = leftHalfCenter - (groupWidth / 2) + (horizontalSpacing / 2);
-        const baseY = this.deckBottomY - 10;
+
+        // Center vertically on deck
+        const deckVerticalCenter = this.deckTopY + ((this.deckBottomY - this.deckTopY) / 2);
+        const baseY = deckVerticalCenter + (groupHeight / 2);
 
         // Create barrels in stacking pattern
         for (let i = 0; i < barrelCount; i++) {
@@ -152,11 +159,18 @@ export default class ShipDeckScene extends Phaser.Scene {
         const verticalSpacing = 75;
         const barrelsPerRow = 3;
 
-        // Calculate group width and center it in right half of deck
+        // Calculate group dimensions
         const groupWidth = (Math.min(barrelCount, barrelsPerRow) * horizontalSpacing);
+        const stackLevels = Math.ceil(barrelCount / barrelsPerRow);
+        const groupHeight = (stackLevels * barrelHeight) + ((stackLevels - 1) * (verticalSpacing - barrelHeight));
+
+        // Center horizontally in right half of deck
         const rightHalfCenter = this.deckCenterX + (this.deckWidth / 4);
         const baseX = rightHalfCenter - (groupWidth / 2) + (horizontalSpacing / 2);
-        const baseY = this.deckBottomY - 10;
+
+        // Center vertically on deck
+        const deckVerticalCenter = this.deckTopY + ((this.deckBottomY - this.deckTopY) / 2);
+        const baseY = deckVerticalCenter + (groupHeight / 2);
 
         // Create barrels in stacking pattern
         for (let i = 0; i < barrelCount; i++) {