diff --git a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
index 28f9e444aa..97f8d3f8e2 100644
--- a/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
+++ b/OpenRA.Mods.Common/OpenRA.Mods.Common.csproj
@@ -433,7 +433,7 @@
     <Compile Include="Traits\Render\WithDeathAnimation.cs" />
     <Compile Include="Traits\Render\WithDecoration.cs" />
     <Compile Include="Traits\Render\WithDockingAnimation.cs" />
-    <Compile Include="Traits\Render\WithDockingOverlay.cs" />
+    <Compile Include="Traits\Render\WithDockedOverlay.cs" />
     <Compile Include="Traits\Render\WithHarvestAnimation.cs" />
     <Compile Include="Traits\Render\WithHarvestOverlay.cs" />
     <Compile Include="Traits\Render\WithIdleOverlay.cs" />
diff --git a/OpenRA.Mods.Common/Traits/Render/WithDockingOverlay.cs b/OpenRA.Mods.Common/Traits/Render/WithDockedOverlay.cs
similarity index 86%
rename from OpenRA.Mods.Common/Traits/Render/WithDockingOverlay.cs
rename to OpenRA.Mods.Common/Traits/Render/WithDockedOverlay.cs
index db95eec69f..65d9b730df 100644
--- a/OpenRA.Mods.Common/Traits/Render/WithDockingOverlay.cs
+++ b/OpenRA.Mods.Common/Traits/Render/WithDockedOverlay.cs
@@ -15,7 +15,7 @@ using OpenRA.Traits;
 namespace OpenRA.Mods.Common.Traits
 {
 	[Desc("Rendered when a harvester is docked.")]
-	public class WithDockingOverlayInfo : ITraitInfo, Requires<RenderSpritesInfo>, Requires<BodyOrientationInfo>
+	public class WithDockedOverlayInfo : ITraitInfo, Requires<RenderSpritesInfo>, Requires<BodyOrientationInfo>
 	{
 		[Desc("Sequence name to use")]
 		[SequenceReference] public readonly string Sequence = "docking-overlay";
@@ -29,17 +29,17 @@ namespace OpenRA.Mods.Common.Traits
 		[Desc("Custom palette is a player palette BaseName")]
 		public readonly bool IsPlayerPalette = false;
 
-		public object Create(ActorInitializer init) { return new WithDockingOverlay(init.Self, this); }
+		public object Create(ActorInitializer init) { return new WithDockedOverlay(init.Self, this); }
 	}
 
-	public class WithDockingOverlay : INotifyDocking, INotifyBuildComplete, INotifySold
+	public class WithDockedOverlay : INotifyDocking, INotifyBuildComplete, INotifySold
 	{
-		readonly WithDockingOverlayInfo info;
+		readonly WithDockedOverlayInfo info;
 		readonly AnimationWithOffset anim;
 		bool buildComplete;
 		bool docked;
 
-		public WithDockingOverlay(Actor self, WithDockingOverlayInfo info)
+		public WithDockedOverlay(Actor self, WithDockedOverlayInfo info)
 		{
 			this.info = info;
 
diff --git a/OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs b/OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs
index 41a8fd8377..1cac280126 100644
--- a/OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs
+++ b/OpenRA.Mods.Common/UtilityCommands/UpgradeRules.cs
@@ -2876,6 +2876,13 @@ namespace OpenRA.Mods.Common.UtilityCommands
 					}
 				}
 
+				// Rename WithDockingOverlay to WithDockedOverlay
+				if (engineVersion < 20160116)
+				{
+					if (node.Key.StartsWith("WithDockingOverlay"))
+						node.Key = "WithDockedOverlay" + node.Key.Substring(18);
+				}
+
 				UpgradeActorRules(engineVersion, ref node.Value.Nodes, node, depth + 1);
 			}
 		}
diff --git a/OpenRA.Mods.TS/Activities/VoxelHarvesterDockSequence.cs b/OpenRA.Mods.TS/Activities/VoxelHarvesterDockSequence.cs
index c586124321..6c718fc8f4 100644
--- a/OpenRA.Mods.TS/Activities/VoxelHarvesterDockSequence.cs
+++ b/OpenRA.Mods.TS/Activities/VoxelHarvesterDockSequence.cs
@@ -10,6 +10,7 @@
 
 using OpenRA.Activities;
 using OpenRA.Mods.Common.Activities;
+using OpenRA.Mods.Common.Traits;
 using OpenRA.Mods.TS.Traits;
 
 namespace OpenRA.Mods.TS.Activities
@@ -17,24 +18,52 @@ namespace OpenRA.Mods.TS.Activities
 	public class VoxelHarvesterDockSequence : HarvesterDockSequence
 	{
 		readonly WithVoxelUnloadBody body;
+		readonly WithDockingOverlay spriteOverlay;
 
 		public VoxelHarvesterDockSequence(Actor self, Actor refinery, int dockAngle, bool isDragRequired, WVec dragOffset, int dragLength)
 			: base(self, refinery, dockAngle, isDragRequired, dragOffset, dragLength)
 		{
 			body = self.Trait<WithVoxelUnloadBody>();
+			spriteOverlay = refinery.TraitOrDefault<WithDockingOverlay>();
 		}
 
 		public override Activity OnStateDock(Actor self)
 		{
 			body.Docked = true;
-			dockingState = State.Loop;
+
+			if (spriteOverlay != null && !spriteOverlay.Visible)
+			{
+				spriteOverlay.Visible = true;
+				spriteOverlay.WithOffset.Animation.PlayThen(spriteOverlay.Info.Sequence, () => {
+					dockingState = State.Loop;
+					spriteOverlay.Visible = false;
+				});
+			}
+			else
+				dockingState = State.Loop;
+
 			return this;
 		}
 
 		public override Activity OnStateUndock(Actor self)
 		{
-			body.Docked = false;
-			dockingState = State.Complete;
+			dockingState = State.Wait;
+
+			if (spriteOverlay != null && !spriteOverlay.Visible)
+			{
+				spriteOverlay.Visible = true;
+				spriteOverlay.WithOffset.Animation.PlayBackwardsThen(spriteOverlay.Info.Sequence, () => {
+					dockingState = State.Complete;
+					body.Docked = false;
+					spriteOverlay.Visible = false;
+				});
+			}
+			else
+			{
+				dockingState = State.Complete;
+				body.Docked = false;
+			}
+
 			return this;
 		}
 	}
diff --git a/OpenRA.Mods.TS/OpenRA.Mods.TS.csproj b/OpenRA.Mods.TS/OpenRA.Mods.TS.csproj
index 0e35f2499b..26839244af 100644
--- a/OpenRA.Mods.TS/OpenRA.Mods.TS.csproj
+++ b/OpenRA.Mods.TS/OpenRA.Mods.TS.csproj
@@ -69,6 +69,7 @@
     <Compile Include="Activities\VoxelHarvesterDockSequence.cs" />
     <Compile Include="SpriteLoaders\TmpTSLoader.cs" />
     <Compile Include="Traits\Buildings\TiberianSunRefinery.cs" />
+    <Compile Include="Traits\Render\WithDockingOverlay.cs" />
     <Compile Include="Traits\Render\WithPermanentInjury.cs" />
     <Compile Include="Traits\Render\WithVoxelWalkerBody.cs" />
     <Compile Include="Traits\Render\WithVoxelUnloadBody.cs" />
diff --git a/OpenRA.Mods.TS/Traits/Render/WithDockingOverlay.cs b/OpenRA.Mods.TS/Traits/Render/WithDockingOverlay.cs
new file mode 100644
index 0000000000..8a11e4818e
--- /dev/null
+++ b/OpenRA.Mods.TS/Traits/Render/WithDockingOverlay.cs
@@ -0,0 +1,59 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2015 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using OpenRA.Graphics;
+using OpenRA.Mods.Common.Traits;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.TS.Traits
+{
+	[Desc("Rendered on the refinery when a voxel harvester is docking and undocking.")]
+	public class WithDockingOverlayInfo : ITraitInfo, Requires<RenderSpritesInfo>, Requires<BodyOrientationInfo>
+	{
+		[Desc("Sequence name to use")]
+		[SequenceReference] public readonly string Sequence = "unload-overlay";
+
+		[Desc("Position relative to body")]
+		public readonly WVec Offset = WVec.Zero;
+
+		[Desc("Custom palette name")]
+		[PaletteReference("IsPlayerPalette")] public readonly string Palette = null;
+
+		[Desc("Custom palette is a player palette BaseName")]
+		public readonly bool IsPlayerPalette = false;
+
+		public object Create(ActorInitializer init) { return new WithDockingOverlay(init.Self, this); }
+	}
+
+	public class WithDockingOverlay
+	{
+		public readonly WithDockingOverlayInfo Info;
+		public readonly AnimationWithOffset WithOffset;
+
+		public bool Visible;
+
+		public WithDockingOverlay(Actor self, WithDockingOverlayInfo info)
+		{
+			Info = info;
+
+			var rs = self.Trait<RenderSprites>();
+			var body = self.Trait<BodyOrientation>();
+
+			var overlay = new Animation(self.World, rs.GetImage(self));
+			overlay.Play(info.Sequence);
+
+			WithOffset = new AnimationWithOffset(overlay,
+				() => body.LocalToWorld(info.Offset.Rotate(body.QuantizeOrientation(self, self.Orientation))),
+				() => !Visible);
+
+			rs.Add(WithOffset, info.Palette, info.IsPlayerPalette);
+		}
+	}
+}
\ No newline at end of file
diff --git a/mods/d2k/rules/structures.yaml b/mods/d2k/rules/structures.yaml
index 1500b3a6ac..f6384d6a35 100644
--- a/mods/d2k/rules/structures.yaml
+++ b/mods/d2k/rules/structures.yaml
@@ -260,7 +260,7 @@ refinery:
 		FactionImages:
 			atreides: refinery.atreides
 			ordos: refinery.ordos
-	WithDockingOverlay@SMOKE:
+	WithDockedOverlay@SMOKE:
 		Sequence: smoke
 	Power:
 		Amount: -75
diff --git a/mods/ts/rules/shared-structures.yaml b/mods/ts/rules/shared-structures.yaml
index f422326b5b..a95b7e5014 100644
--- a/mods/ts/rules/shared-structures.yaml
+++ b/mods/ts/rules/shared-structures.yaml
@@ -91,9 +91,10 @@ PROC:
 		Sequence: idle-redlights
 	WithIdleOverlay@BIB:
 		Sequence: bib
-	WithDockingOverlay@flame:
+	WithDockedOverlay@FLAME:
 		Sequence: flame
 		Palette: effect
+	WithDockingOverlay@UNLOAD:
 	Power:
 		Amount: -30
 	ProvidesPrerequisite@buildingname:
diff --git a/mods/ts/sequences/structures.yaml b/mods/ts/sequences/structures.yaml
index 22bbce2af9..7953c39ac0 100644
--- a/mods/ts/sequences/structures.yaml
+++ b/mods/ts/sequences/structures.yaml
@@ -1038,7 +1038,6 @@ nahpad:
 		Offset: 0, 0
 		UseTilesetCode: false
 
-# TODO: unused narefn_a
 proc.gdi:
 	Defaults: ntrefn
 		Offset: -12, -42
@@ -1057,6 +1056,9 @@ proc.gdi:
 		ShadowStart: 20
 	flame: ntrefn_b
 		Length: *
+	unload-overlay: narefn_a
+		Length: *
+		ZOffset: 1024
 	idle-redlights: ntrefn_c
 		Length: 16
 		Tick: 120
@@ -1078,7 +1080,6 @@ proc.gdi:
 		Offset: 0, 0
 		UseTilesetCode: false
 
-# TODO: unused narefn_a
 proc.nod:
 	Defaults: ntrefn
 		Offset: -12, -42
@@ -1097,6 +1098,9 @@ proc.nod:
 		ShadowStart: 20
 	flame: ntrefn_b
 		Length: *
+	unload-overlay: narefn_a
+		Length: *
+		ZOffset: 1024
 	idle-redlights: ntrefn_c
 		Length: 16
 		Tick: 120