diff --git a/src/scenes/ShipDeckScene.js b/src/scenes/ShipDeckScene.js
index 217a9bb..c47fbdd 100644
--- a/src/scenes/ShipDeckScene.js
+++ b/src/scenes/ShipDeckScene.js
@@ -58,12 +58,12 @@ export default class ShipDeckScene extends Phaser.Scene {
                 .setStrokeStyle(2, 0x3d2817);
         }
 
-        // Draw border around deck
+        // Calculate actual deck edges (including plank height)
         const plankHeight = 25;
-        const deckTopEdge = this.deckTopY - (plankHeight / 2);
-        const deckBottomEdge = this.deckBottomY + (plankHeight / 2);
-        const deckHeight = deckBottomEdge - deckTopEdge;
-        const deckCenterY = (deckTopEdge + deckBottomEdge) / 2;
+        this.deckTopEdge = this.deckTopY - (plankHeight / 2);
+        this.deckBottomEdge = this.deckBottomY + (plankHeight / 2);
+        const deckHeight = this.deckBottomEdge - this.deckTopEdge;
+        const deckCenterY = (this.deckTopEdge + this.deckBottomEdge) / 2;
 
         const deckBorder = this.add.rectangle(this.deckCenterX, deckCenterY, this.deckWidth, deckHeight);
         deckBorder.setStrokeStyle(4, 0x3d2817);
@@ -121,8 +121,8 @@ export default class ShipDeckScene extends Phaser.Scene {
         const leftHalfCenter = this.deckLeftX + (this.deckWidth / 4);
         const baseX = leftHalfCenter - (groupWidth / 2) + (horizontalSpacing / 2);
 
-        // Center vertically on deck
-        const deckVerticalCenter = this.deckTopY + ((this.deckBottomY - this.deckTopY) / 2);
+        // Center vertically on deck (using actual deck edges)
+        const deckVerticalCenter = (this.deckTopEdge + this.deckBottomEdge) / 2;
         const baseY = deckVerticalCenter + (groupHeight / 2);
 
         // Create barrels in stacking pattern
@@ -179,8 +179,8 @@ export default class ShipDeckScene extends Phaser.Scene {
         const rightHalfCenter = this.deckCenterX + (this.deckWidth / 4);
         const baseX = rightHalfCenter - (groupWidth / 2) + (horizontalSpacing / 2);
 
-        // Center vertically on deck
-        const deckVerticalCenter = this.deckTopY + ((this.deckBottomY - this.deckTopY) / 2);
+        // Center vertically on deck (using actual deck edges)
+        const deckVerticalCenter = (this.deckTopEdge + this.deckBottomEdge) / 2;
         const baseY = deckVerticalCenter + (groupHeight / 2);
 
         // Create barrels in stacking pattern