diff --git a/src/core/MoveFireSimulator.spec.ts b/src/core/MoveFireSimulator.spec.ts
index 1964b27..0856110 100644
--- a/src/core/MoveFireSimulator.spec.ts
+++ b/src/core/MoveFireSimulator.spec.ts
@@ -10,17 +10,20 @@ module TK.SpaceTac.Specs {
             return [ship, simulator, action];
         }
 
-        test.case("finds the best engine to make a move", check => {
+        test.case("finds a suitable engine to make an approach", check => {
             let ship = new Ship();
             let simulator = new MoveFireSimulator(ship);
-            check.equals(simulator.findBestEngine(), null);
+            check.equals(simulator.findEngine(), null);
             let engine1 = TestTools.addEngine(ship, 100);
-            check.same(simulator.findBestEngine(), engine1);
+            check.same(simulator.findEngine(), engine1);
             let engine2 = TestTools.addEngine(ship, 120);
-            let engine3 = TestTools.addEngine(ship, 150);
-            let engine4 = TestTools.addEngine(ship, 70);
-            let best = simulator.findBestEngine();
-            check.same(best, engine3);
+            check.same(simulator.findEngine(), engine1);
+            engine1.configureCooldown(1, 1);
+            engine1.getCooldown().use();
+            check.same(simulator.findEngine(), engine2);
+            engine2.configureCooldown(1, 1);
+            engine2.getCooldown().use();
+            check.equals(simulator.findEngine(), null);
         });
 
         test.case("fires directly when in range", check => {
@@ -110,7 +113,7 @@ module TK.SpaceTac.Specs {
             let battle = new Battle();
             battle.fleets[0].addShip(ship);
             let ship1 = battle.fleets[0].addShip();
-            let moveaction = nn(simulator.findBestEngine());
+            let moveaction = nn(simulator.findEngine());
             (<any>moveaction).safety_distance = 30;
             battle.ship_separation = 30;
 
diff --git a/src/core/MoveFireSimulator.ts b/src/core/MoveFireSimulator.ts
index 6d1d6c2..41339b2 100644
--- a/src/core/MoveFireSimulator.ts
+++ b/src/core/MoveFireSimulator.ts
@@ -53,15 +53,12 @@ module TK.SpaceTac {
         }
 
         /**
-         * Find the best available move action
+         * Find an engine action, to make an approach
+         * 
+         * This will return the first available engine, in the definition order
          */
-        findBestEngine(): MoveAction | null {
-            let actions = <MoveAction[]>this.ship.actions.listAll().filter(action => action instanceof MoveAction);
-            if (actions.length == 0) {
-                return null;
-            } else {
-                return maxBy(actions, action => action.getDistanceByActionPoint(this.ship));
-            }
+        findEngine(): MoveAction | null {
+            return first(cfilter(this.ship.actions.listAll(), MoveAction), action => action.getCooldown().canUse());
         }
 
         /**
@@ -140,7 +137,7 @@ module TK.SpaceTac {
                     move_target = corrected_target;
                 }
             } else {
-                let engine = this.findBestEngine();
+                let engine = this.findEngine();
                 if (engine) {
                     let approach_radius = action.getRangeRadius(this.ship);
                     let approach = this.getApproach(engine, target, approach_radius, move_margin);
@@ -161,7 +158,7 @@ module TK.SpaceTac {
 
             // Check move AP
             if (result.need_move && move_target) {
-                let engine = this.findBestEngine();
+                let engine = this.findEngine();
                 if (engine) {
                     result.total_move_ap = engine.getActionPointsUsage(this.ship, move_target);
                     result.can_move = ap > 0;
diff --git a/src/core/models/ModelXander.ts b/src/core/models/ModelXander.ts
index 8a69e26..d1846a0 100644
--- a/src/core/models/ModelXander.ts
+++ b/src/core/models/ModelXander.ts
@@ -29,7 +29,6 @@ module TK.SpaceTac {
                 }, "fractalhull");
                 hull.configureCooldown(1, 4);
 
-                // TODO Is currently always used by move-fire simulator
                 let disengage = new MoveAction("Disengage", {
                     distance_per_power: 1000,
                     safety_distance: 200,
diff --git a/src/ui/battle/Targetting.ts b/src/ui/battle/Targetting.ts
index 124a267..d487021 100644
--- a/src/ui/battle/Targetting.ts
+++ b/src/ui/battle/Targetting.ts
@@ -257,7 +257,7 @@ module TK.SpaceTac.UI {
                             move_action = <MoveAction>last_move.action;
                         }
                     } else {
-                        let engine = new MoveFireSimulator(this.ship).findBestEngine();
+                        let engine = new MoveFireSimulator(this.ship).findEngine();
                         if (engine) {
                             move_action = engine;
                         }