diff --git a/core/src/mindustry/maps/generators/PlanetGenerator.java b/core/src/mindustry/maps/generators/PlanetGenerator.java
index 59783db265..20b90590f2 100644
--- a/core/src/mindustry/maps/generators/PlanetGenerator.java
+++ b/core/src/mindustry/maps/generators/PlanetGenerator.java
@@ -54,6 +54,25 @@ public abstract class PlanetGenerator extends BasicGenerator implements HexMeshe
         return sector.planet.allowLaunchToNumbered && (sector.hasBase() || sector.near().contains(Sector::hasBase));
     }
 
+    public Sector findLaunchCandidate(Sector destination, Sector selected){
+        Sector launchSector = selected != null && selected.planet == destination.planet && selected.hasBase() ? selected: null;
+        //directly nearby.
+        if(destination.near().contains(launchSector)) return launchSector;
+
+        Sector launchFrom = launchSector;
+        if(launchFrom == null || (destination.preset == null && !destination.near().contains(launchSector))){
+            //TODO pick one with the most resources
+            launchFrom = destination.near().find(Sector::hasBase);
+            if(launchFrom == null && destination.preset != null){
+                if(launchSector != null) return launchSector;
+                launchFrom = destination.planet.sectors.min(s -> !s.hasBase() ? Float.MAX_VALUE : s.tile.v.dst2(destination.tile.v));
+                if(!launchFrom.hasBase()) launchFrom = null;
+            }
+        }
+
+        return launchFrom;
+    }
+
     /** @return whether to allow landing on the specified procedural sector */
     public boolean allowAcceleratorLanding(Sector sector){
         return sector.planet.allowLaunchToNumbered;
diff --git a/core/src/mindustry/maps/planet/SerpuloPlanetGenerator.java b/core/src/mindustry/maps/planet/SerpuloPlanetGenerator.java
index 8e0931974e..f037c56768 100644
--- a/core/src/mindustry/maps/planet/SerpuloPlanetGenerator.java
+++ b/core/src/mindustry/maps/planet/SerpuloPlanetGenerator.java
@@ -87,10 +87,26 @@ public class SerpuloPlanetGenerator extends PlanetGenerator{
         return true;
     }
 
+    public boolean allowNumberedLaunch(Sector s){
+        return s.hasBase() && (s.info.bestCoreType.size >= 4 || s.isBeingPlayed() && state.rules.defaultTeam.cores().contains(b -> b.block.size >= 4));
+    }
+
     @Override
     public boolean allowLanding(Sector sector){
-        return sector.planet.allowLaunchToNumbered && (sector.hasBase() || sector.near().contains(s -> s.hasBase() &&
-            (s.info.bestCoreType.size >= 4 || s.isBeingPlayed() && state.rules.defaultTeam.cores().contains(b -> b.block.size >= 4))));
+        return sector.planet.allowLaunchToNumbered && (sector.hasBase() || sector.near().contains(this::allowNumberedLaunch));
+    }
+
+    @Override
+    public Sector findLaunchCandidate(Sector destination, Sector selected){
+        if(destination.preset == null || !destination.preset.requireUnlock){
+            if(selected != null && selected.isNear(destination) && allowNumberedLaunch(selected)){
+                return selected;
+            }else{
+                return destination.near().find(this::allowNumberedLaunch);
+            }
+        }else{
+            return super.findLaunchCandidate(destination, selected);
+        }
     }
 
     @Override
diff --git a/core/src/mindustry/type/Sector.java b/core/src/mindustry/type/Sector.java
index fbdab2cd2a..503f39d754 100644
--- a/core/src/mindustry/type/Sector.java
+++ b/core/src/mindustry/type/Sector.java
@@ -65,6 +65,15 @@ public class Sector{
         }
     }
 
+    public boolean isNear(Sector other){
+        for(var tile : tile.tiles){
+            if(planet.getSector(tile) == other){
+                return true;
+            }
+        }
+        return false;
+    }
+
     /** Displays threat as a formatted string. */
     public String displayThreat(){
         float step = 0.25f;
diff --git a/core/src/mindustry/ui/dialogs/PlanetDialog.java b/core/src/mindustry/ui/dialogs/PlanetDialog.java
index ddde346b07..d0fb0ac21d 100644
--- a/core/src/mindustry/ui/dialogs/PlanetDialog.java
+++ b/core/src/mindustry/ui/dialogs/PlanetDialog.java
@@ -418,6 +418,8 @@ public class PlanetDialog extends BaseDialog implements PlanetInterfaceRenderer{
             return false;
         }
 
+        if(sector.planet.generator == null) return false;
+
         if(sector.hasBase() || sector.id == sector.planet.startSector) return true;
         //preset sectors can only be selected once unlocked
         if(sector.preset != null && sector.preset.requireUnlock){
@@ -425,33 +427,13 @@ public class PlanetDialog extends BaseDialog implements PlanetInterfaceRenderer{
             return sector.preset.unlocked() || node == null || node.parent == null || (node.parent.content.unlocked() && (!(node.parent.content instanceof SectorPreset preset) || preset.sector.hasBase()));
         }
 
-        return sector.planet.generator != null ?
-            //use planet impl when possible
-            (mode == planetLaunch ? sector.planet.generator.allowAcceleratorLanding(sector) : sector.planet.generator.allowLanding(sector)) :
-            mode == planetLaunch || sector.hasBase() || sector.near().contains(Sector::hasBase); //near an occupied sector
+        return mode == planetLaunch ? sector.planet.generator.allowAcceleratorLanding(sector) : sector.planet.generator.allowLanding(sector);
     }
 
     Sector findLauncher(Sector to){
-        if(mode == planetLaunch){
-            return launchSector;
-        }
+        if(mode == planetLaunch || to.planet.generator == null) return launchSector;
 
-        Sector launchSector = this.launchSector != null && this.launchSector.planet == to.planet && this.launchSector.hasBase() ? this.launchSector : null;
-        //directly nearby.
-        if(to.near().contains(launchSector)) return launchSector;
-
-        Sector launchFrom = launchSector;
-        if(launchFrom == null || (to.preset == null && !to.near().contains(launchSector))){
-            //TODO pick one with the most resources
-            launchFrom = to.near().find(Sector::hasBase);
-            if(launchFrom == null && to.preset != null){
-                if(launchSector != null) return launchSector;
-                launchFrom = state.planet.sectors.min(s -> !s.hasBase() ? Float.MAX_VALUE : s.tile.v.dst2(to.tile.v));
-                if(!launchFrom.hasBase()) launchFrom = null;
-            }
-        }
-
-        return launchFrom;
+        return to.planet.generator.findLaunchCandidate(to, launchSector);
     }
 
     boolean showing(){
@@ -484,7 +466,6 @@ public class PlanetDialog extends BaseDialog implements PlanetInterfaceRenderer{
         }
 
         Sector hoverOrSelect = hovered != null ? hovered : selected;
-        Sector launchFrom = hoverOrSelect != null && !hoverOrSelect.hasBase() ? findLauncher(hoverOrSelect) : null;
 
         Sector current = Vars.state.getSector() != null && Vars.state.getSector().isBeingPlayed() && Vars.state.getSector().planet == state.planet ? Vars.state.getSector() : null;