diff --git a/core/assets/maps/seaPort.msav b/core/assets/maps/seaPort.msav
new file mode 100644
index 0000000000..e2fbf6d090
Binary files /dev/null and b/core/assets/maps/seaPort.msav differ
diff --git a/core/assets/maps/weatheredChannels.msav b/core/assets/maps/weatheredChannels.msav
new file mode 100644
index 0000000000..f9ef2030e1
Binary files /dev/null and b/core/assets/maps/weatheredChannels.msav differ
diff --git a/core/src/mindustry/content/SectorPresets.java b/core/src/mindustry/content/SectorPresets.java
index 9ca699ba02..d9e0cb20ad 100644
--- a/core/src/mindustry/content/SectorPresets.java
+++ b/core/src/mindustry/content/SectorPresets.java
@@ -10,7 +10,7 @@ public class SectorPresets{
     craters, biomassFacility, taintedWoods, frozenForest, ruinousShores, facility32m, windsweptIslands, stainedMountains, tarFields,
     frontier, fungalPass, infestedCanyons, atolls, mycelialBastion, extractionOutpost, saltFlats, testingGrounds, overgrowth, //polarAerodrome,
     impact0078, desolateRift, nuclearComplex, planetaryTerminal,
-    coastline, navalFortress,
+    coastline, navalFortress, weatheredChannels, seaPort,
 
     onset, aegis, lake, intersect, basin, atlas, split, marsh, peaks, ravine, caldera,
     stronghold, crevice, siege, crossroads, karst, origin;
@@ -62,6 +62,10 @@ public class SectorPresets{
             difficulty = 3;
         }};
 
+        seaPort = new SectorPreset("seaPort", serpulo, 47){{
+            difficulty = 4;
+        }};
+
         facility32m = new SectorPreset("facility32m", serpulo, 64){{
             captureWave = 25;
             difficulty = 4;
@@ -91,6 +95,11 @@ public class SectorPresets{
             difficulty = 5;
         }};
 
+        weatheredChannels = new SectorPreset("weatheredChannels", serpulo, 39){{
+            captureWave = 40;
+            difficulty = 7;
+        }};
+
         navalFortress = new SectorPreset("navalFortress", serpulo, 216){{
             difficulty = 9;
         }};
diff --git a/core/src/mindustry/content/SerpuloTechTree.java b/core/src/mindustry/content/SerpuloTechTree.java
index d16d2908e7..25a63a52cd 100644
--- a/core/src/mindustry/content/SerpuloTechTree.java
+++ b/core/src/mindustry/content/SerpuloTechTree.java
@@ -464,6 +464,18 @@ public class SerpuloTechTree{
                         new Research(kiln),
                         new Research(mechanicalPump)
                         ), () -> {
+                            node(seaPort, Seq.with(
+                            new SectorComplete(biomassFacility),
+                            new Research(navalFactory),
+                            new Research(risso),
+                            new Research(retusa),
+                            new Research(steamGenerator),
+                            new Research(cultivator),
+                            new Research(coalCentrifuge)
+                            ), () -> {
+
+                            });
+
                             node(windsweptIslands, Seq.with(
                             new SectorComplete(ruinousShores),
                             new Research(pneumaticDrill),
@@ -565,6 +577,12 @@ public class SerpuloTechTree{
                                     new Research(navalFactory),
                                     new Research(payloadConveyor)
                                     ), () -> {
+                                        node(weatheredChannels, Seq.with(
+                                        new SectorComplete(impact0078)
+                                        ), () -> {
+
+                                        });
+
                                         node(navalFortress, Seq.with(
                                         new SectorComplete(coastline),
                                         new SectorComplete(extractionOutpost),
diff --git a/core/src/mindustry/entities/comp/BuilderComp.java b/core/src/mindustry/entities/comp/BuilderComp.java
index 794edf5d04..4544d055a0 100644
--- a/core/src/mindustry/entities/comp/BuilderComp.java
+++ b/core/src/mindustry/entities/comp/BuilderComp.java
@@ -146,6 +146,13 @@ abstract class BuilderComp implements Posc, Statusc, Teamc, Rotc{
 
                     if(hasAll){
                         Call.beginPlace(self(), current.block, team, current.x, current.y, current.rotation);
+
+                        if(current.block.instantBuild){
+                            if(plans.size > 0){
+                                plans.removeFirst();
+                            }
+                            continue;
+                        }
                     }else{
                         current.stuck = true;
                     }
diff --git a/core/src/mindustry/ui/fragments/PlacementFragment.java b/core/src/mindustry/ui/fragments/PlacementFragment.java
index 9d4dc589c4..19d0c1d422 100644
--- a/core/src/mindustry/ui/fragments/PlacementFragment.java
+++ b/core/src/mindustry/ui/fragments/PlacementFragment.java
@@ -146,10 +146,22 @@ public class PlacementFragment{
                 }
             }
 
-            if(tryRecipe != null && tryRecipe.isVisible() && unlocked(tryRecipe)){
+            if(tryRecipe == null && state.rules.editor){
+                var tile = world.tileWorld(Core.input.mouseWorldX(), Core.input.mouseWorldY());
+                if(tile != null){
+                    tryRecipe =
+                        tile.block() != Blocks.air ? tile.block() :
+                        tile.overlay() != Blocks.air ? tile.overlay() :
+                        tile.floor() != Blocks.air ? tile.floor() : null;
+                }
+            }
+
+            if(tryRecipe != null && ((tryRecipe.isVisible() && unlocked(tryRecipe)) || state.rules.editor)){
                 input.block = tryRecipe;
                 tryRecipe.lastConfig = tryConfig;
-                currentCategory = input.block.category;
+                if(tryRecipe.isVisible()){
+                    currentCategory = input.block.category;
+                }
                 return true;
             }
         }
diff --git a/core/src/mindustry/world/Block.java b/core/src/mindustry/world/Block.java
index 3bd6c3977c..7b83ab0ae2 100644
--- a/core/src/mindustry/world/Block.java
+++ b/core/src/mindustry/world/Block.java
@@ -328,6 +328,8 @@ public class Block extends UnlockableContent implements Senseable{
     public boolean instantDeconstruct = false;
     /** If true, this block constructs immediately. This implies no resource requirement, and ignores configs - do not use, this is for performance only! */
     public boolean instantBuild = false;
+    /** If true, this block can be placed even in "dark" areas. Only used for editor static walls. */
+    public boolean ignoreBuildDarkness = false;
     /** Effect for placing the block. Passes size as rotation. */
     public Effect placeEffect = Fx.placeBlock;
     /** Effect for breaking the block. Passes size as rotation. */
diff --git a/core/src/mindustry/world/Build.java b/core/src/mindustry/world/Build.java
index a47363df2f..6288a0d235 100644
--- a/core/src/mindustry/world/Build.java
+++ b/core/src/mindustry/world/Build.java
@@ -165,7 +165,7 @@ public class Build{
     /** Returns whether a tile can be placed at this location by this team. */
     public static boolean validPlace(Block type, Team team, int x, int y, int rotation, boolean checkVisible){
         //the wave team can build whatever they want as long as it's visible - banned blocks are not applicable
-        if(type == null || (checkVisible && (!type.environmentBuildable() || (!type.isPlaceable() && !(state.rules.waves && team == state.rules.waveTeam && type.isVisible()))))){
+        if(type == null || (!state.rules.editor && (checkVisible && (!type.environmentBuildable() || (!type.isPlaceable() && !(state.rules.waves && team == state.rules.waveTeam && type.isVisible())))))){
             return false;
         }
 
@@ -205,7 +205,7 @@ public class Build{
         }
 
         //campaign darkness check
-        if(world.getDarkness(x, y) >= 3){
+        if(!type.ignoreBuildDarkness && world.getDarkness(x, y) >= 3){
             return false;
         }
 
diff --git a/core/src/mindustry/world/blocks/environment/Floor.java b/core/src/mindustry/world/blocks/environment/Floor.java
index dfd29de65b..2ea499d015 100644
--- a/core/src/mindustry/world/blocks/environment/Floor.java
+++ b/core/src/mindustry/world/blocks/environment/Floor.java
@@ -92,6 +92,7 @@ public class Floor extends Block{
         placeableLiquid = true;
         allowRectanglePlacement = true;
         instantBuild = true;
+        ignoreBuildDarkness = true;
         placeEffect = Fx.rotateBlock;
     }
 
diff --git a/core/src/mindustry/world/blocks/environment/StaticWall.java b/core/src/mindustry/world/blocks/environment/StaticWall.java
index 56fc569b24..49bfdd9a31 100644
--- a/core/src/mindustry/world/blocks/environment/StaticWall.java
+++ b/core/src/mindustry/world/blocks/environment/StaticWall.java
@@ -5,6 +5,7 @@ import arc.graphics.g2d.*;
 import arc.math.*;
 import arc.math.geom.*;
 import mindustry.annotations.Annotations.*;
+import mindustry.content.*;
 import mindustry.graphics.*;
 import mindustry.world.*;
 
@@ -21,7 +22,10 @@ public class StaticWall extends Prop{
         variants = 2;
         cacheLayer = CacheLayer.walls;
         allowRectanglePlacement = true;
+        placeEffect = Fx.rotateBlock;
         instantBuild = true;
+        ignoreBuildDarkness = true;
+        placeableLiquid = true;
     }
 
     @Override
@@ -49,6 +53,11 @@ public class StaticWall extends Prop{
         split = large.split(32, 32);
     }
 
+    @Override
+    public boolean canReplace(Block other){
+        return other instanceof StaticWall || super.canReplace(other);
+    }
+
     boolean eq(int rx, int ry){
         return rx < world.width() - 1 && ry < world.height() - 1
             && world.tile(rx + 1, ry).block() == this