diff --git a/Subsurface/Source/Camera.cs b/Subsurface/Source/Camera.cs
index 3e785b401..ba04ff939 100644
--- a/Subsurface/Source/Camera.cs
+++ b/Subsurface/Source/Camera.cs
@@ -38,11 +38,8 @@ namespace Barotrauma
             get { return zoom; }
             set 
             {
-                zoom = value; 
-                if (zoom < 0.1f) zoom = 0.1f;
-
-                //if (prevZoom == zoom) return;
-
+                zoom = Math.Max(value, GameMain.DebugDraw ? 0.01f : 0.1f);
+                
                 Vector2 center = WorldViewCenter;
                 float newWidth = resolution.X / zoom;
                 float newHeight = resolution.Y / zoom;
@@ -137,7 +134,6 @@ namespace Barotrauma
             worldView.X = (int)(interpolatedPosition.X - worldView.Width / 2.0);
             worldView.Y = (int)(interpolatedPosition.Y + worldView.Height / 2.0);
 
-
             if (Level.Loaded != null && clampPos)
             {
                 position.Y -= Math.Max(worldView.Y - Level.Loaded.Size.Y, 0.0f);
@@ -199,7 +195,7 @@ namespace Barotrauma
                  
                 moveCam = moveCam * deltaTime * 60.0f; 
 
-                Zoom = MathHelper.Clamp(zoom + (PlayerInput.ScrollWheelSpeed / 1000.0f) * zoom, 0.1f, 2.0f); 
+                Zoom = MathHelper.Clamp(zoom + (PlayerInput.ScrollWheelSpeed / 1000.0f) * zoom, GameMain.DebugDraw ? 0.01f : 0.1f, 2.0f); 
             }
             else
             {
diff --git a/Subsurface/Source/Events/Missions/MonsterMission.cs b/Subsurface/Source/Events/Missions/MonsterMission.cs
index 503febcaa..6c4d2fa7e 100644
--- a/Subsurface/Source/Events/Missions/MonsterMission.cs
+++ b/Subsurface/Source/Events/Missions/MonsterMission.cs
@@ -1,5 +1,6 @@
 using Barotrauma.Networking;
 using Microsoft.Xna.Framework;
+using System;
 using System.Xml.Linq;
 
 namespace Barotrauma
@@ -27,11 +28,21 @@ namespace Barotrauma
 
         public override void Start(Level level)
         {
-            Vector2 position = level.GetRandomInterestingPosition(true, Level.PositionType.MainPath);
+            float minDist = Math.Max(Submarine.MainSub.Borders.Width, Submarine.MainSub.Borders.Height);
 
-            monster = Character.Create(monsterFile, position, null, GameMain.Client != null);
+            //find a random spawnpos that isn't too close to the main sub
+            int tries = 0;
+            Vector2 spawnPos = Vector2.Zero;
+            do
+            {
+                spawnPos = Level.Loaded.GetRandomInterestingPosition(true, Level.PositionType.MainPath);
+                tries++;
+            } while (tries < 50 && Vector2.Distance(spawnPos, Submarine.MainSub.WorldPosition) < minDist);
+
+
+            monster = Character.Create(monsterFile, spawnPos, null, GameMain.Client != null);
             monster.Enabled = false;
-            radarPosition = monster.Position;
+            radarPosition = spawnPos;
         }
 
         public override void Update(float deltaTime)
diff --git a/Subsurface/Source/Events/MonsterEvent.cs b/Subsurface/Source/Events/MonsterEvent.cs
index 7162c7937..d84cf5e35 100644
--- a/Subsurface/Source/Events/MonsterEvent.cs
+++ b/Subsurface/Source/Events/MonsterEvent.cs
@@ -47,9 +47,17 @@ namespace Barotrauma
 
         private void SpawnMonsters()
         {
-            //WayPoint randomWayPoint = WayPoint.GetRandom(SpawnType.Enemy);
+            float minDist = Math.Max(Submarine.MainSub.Borders.Width, Submarine.MainSub.Borders.Height);
+
+            //find a random spawnpos that isn't too close to the main sub
+            int tries = 0;
+            Vector2 spawnPos = Vector2.Zero;
+            do
+            {
+                spawnPos = Level.Loaded.GetRandomInterestingPosition(true, spawnPosType);
+                tries++;
+            } while (tries < 50 && Vector2.Distance(spawnPos, Submarine.MainSub.WorldPosition) < minDist);
 
-            Vector2 spawnPos = Level.Loaded.GetRandomInterestingPosition(true, spawnPosType);
             
             int amount = Rand.Range(minAmount, maxAmount, false);
 
diff --git a/Subsurface/Source/Items/Components/Machines/Vent.cs b/Subsurface/Source/Items/Components/Machines/Vent.cs
index ccf662ba9..5bcb644ff 100644
--- a/Subsurface/Source/Items/Components/Machines/Vent.cs
+++ b/Subsurface/Source/Items/Components/Machines/Vent.cs
@@ -23,6 +23,8 @@ namespace Barotrauma.Items.Components
         {
             if (item.CurrentHull == null) return;
 
+            if (item.InWater) return;
+
             item.CurrentHull.Oxygen += oxygenFlow * deltaTime;
             OxygenFlow -= deltaTime * 1000.0f;
         }