diff --git a/src/scenes/ShipDeckScene.js b/src/scenes/ShipDeckScene.js
index 7369c32..d9894ed 100644
--- a/src/scenes/ShipDeckScene.js
+++ b/src/scenes/ShipDeckScene.js
@@ -40,9 +40,21 @@ export default class ShipDeckScene extends Phaser.Scene {
     }
 
     createDeck() {
+        // Ship deck dimensions
+        this.deckCenterX = 400;
+        this.deckWidth = 700;
+        this.deckTopY = 200;
+        this.deckPlankSpacing = 30;
+        this.deckPlankCount = 8;
+
+        // Calculate deck boundaries
+        this.deckLeftX = this.deckCenterX - this.deckWidth / 2;
+        this.deckRightX = this.deckCenterX + this.deckWidth / 2;
+        this.deckBottomY = this.deckTopY + (this.deckPlankCount - 1) * this.deckPlankSpacing;
+
         // Ship deck planks
-        for (let i = 0; i < 8; i++) {
-            this.add.rectangle(400, 200 + i * 30, 700, 25, 0x654321)
+        for (let i = 0; i < this.deckPlankCount; i++) {
+            this.add.rectangle(this.deckCenterX, this.deckTopY + i * this.deckPlankSpacing, this.deckWidth, 25, 0x654321)
                 .setStrokeStyle(2, 0x3d2817);
         }
     }
@@ -83,8 +95,9 @@ export default class ShipDeckScene extends Phaser.Scene {
         const barrelCount = Math.ceil(this.inventory.fuel / 10);
         if (barrelCount === 0) return;
 
-        const baseX = 120;
-        const baseY = 450;
+        // Position relative to deck
+        const baseX = this.deckLeftX + 70;
+        const baseY = this.deckBottomY + 40;
         const barrelWidth = 50;
         const barrelHeight = 70;
         const horizontalSpacing = 60;
@@ -130,8 +143,9 @@ export default class ShipDeckScene extends Phaser.Scene {
         const barrelCount = Math.ceil(this.inventory.whaleOil / 10);
         if (barrelCount === 0) return;
 
-        const baseX = 380;
-        const baseY = 450;
+        // Position relative to deck
+        const baseX = this.deckCenterX + 30;
+        const baseY = this.deckBottomY + 40;
         const barrelWidth = 50;
         const barrelHeight = 70;
         const horizontalSpacing = 60;