diff --git a/Modules/fvcircles.lua b/Modules/fvcircles.lua
new file mode 100644
index 0000000..ef57e2b
--- /dev/null
+++ b/Modules/fvcircles.lua
@@ -0,0 +1,78 @@
+--[[ Modules for generation or building vertical circles in 
+--various forms which are filled. Good for underwater bases
+--written by TheLux
+--Check https://i.redd.it/swn3e9w8dyc31.jpg to see
+--the references for the numbers]]
+
+-- Check if the modules API is present
+-- and load it. We need it
+if not os.loadAPI('modules.lua') then
+  error('Error! modules.lua is missing. Please insert it into turtle.')
+end
+
+--initial_full_circle_setup() checks if there is enough
+--material and sets the turtle to the start
+--position and places the first block.
+--Alle circles uses this function
+function initial_full_circle_setup(omaterial, omaterial_count, imaterial, imaterial_count)
+  -- Check if we have enough material
+  if modules.count_inventory(omaterial) < omaterial_count then
+    error('Error! Not enough blocks of ' .. omaterial)
+    return false
+  end
+
+  if modules.count_inventory(imaterial) < imaterial_count then
+    error('Error! Not enough blocks of ' .. imaterial)
+    return false
+  end
+
+  turtle.up()
+end
+ 
+--fvcircle5 builds a vertical 5 by 5 circle 
+--which are filled with another material
+function fvcircle5(omaterial, imaterial)
+  -- Start the initial Setup and place the turtle in
+  -- the right position
+  fvcircles.initial_full_circle_setup(omaterial, 12, imaterial, 9)
+
+  -- First Row
+  turtle.turnLeft()
+  turtle.back()
+  turtle.back()
+  for i = 1, 3 do
+    modules.select_and_place_down(omaterial)
+    turtle.forward()
+  end
+  turtle.up()
+  -- Second and Third and Fourth Row
+  for i = 1, 3 do
+    turtle.turnLeft()
+    turtle.turnLeft()
+    modules.select_and_place_down(omaterial)
+    turtle.forward()
+    modules.select_and_place_down(imaterial)
+    turtle.forward()
+    modules.select_and_place_down(imaterial)
+    turtle.forward()
+    modules.select_and_place_down(omaterial)
+    turtle.up()
+  end
+
+  -- Fifth and last row
+  turtle.turnLeft()
+  turtle.turnLeft()
+  for i = 1, 3 do
+    turtle.forward()
+    modules.select_and_place_down(omaterial)
+  end
+  turtle.turnRight()
+  turtle.forward()
+  for i = 1, 5 do
+    turtle.down()
+  end
+
+  print('Done building a filled and vertical 5 by 5 circle')
+end
+
+
diff --git a/Underwater_Base/build_pipe.lua b/Underwater_Base/build_pipe.lua
new file mode 100644
index 0000000..d622de8
--- /dev/null
+++ b/Underwater_Base/build_pipe.lua
@@ -0,0 +1,27 @@
+--[[ App for building an underwater Pipe
+--written by TheLux
+--Check https://i.redd.it/swn3e9w8dyc31.jpg to see
+--the references for the numbers]]
+
+--- Check if the fvcircles API is present
+-- and load it. We need it
+if not os.loadAPI('fvcircles.lua') then
+  error('Error! fvcircles.lua is missing. Please insert it into turtle.')
+end
+
+print("How many pipes do you want to build: ")
+local pipes = read()
+
+print("What should be the outer Material (ex. glass): ")
+local omaterial = read()
+
+print("What should be the inner Material (ex. sand): ")
+local imaterial = read()
+
+print("Building a " .. pipes .. " blocks long tunnel")
+for i = 1, pipes do
+  turtle.down()
+  fvcircles.fvcircle5(omaterial, imaterial)
+end
+
+print("Done build the tunnel")