diff --git a/resources/units/ships/P4.yaml b/resources/units/ships/P4.yaml
new file mode 100644
index 00000000..1390ba4a
--- /dev/null
+++ b/resources/units/ships/P4.yaml
@@ -0,0 +1,4 @@
+class: Boat
+price: 0
+variants:
+  P 4 Torpedo Boat: null
\ No newline at end of file
diff --git a/resources/units/ships/PBR_MKII.yaml b/resources/units/ships/PBR_MKII.yaml
new file mode 100644
index 00000000..1fd58c3b
--- /dev/null
+++ b/resources/units/ships/PBR_MKII.yaml
@@ -0,0 +1,4 @@
+class: Boat
+price: 0
+variants:
+  Patrol Boat, River MkII: null
\ No newline at end of file
diff --git a/resources/units/ships/USS Maddox.yaml b/resources/units/ships/USS Maddox.yaml
new file mode 100644
index 00000000..6751e03b
--- /dev/null
+++ b/resources/units/ships/USS Maddox.yaml	
@@ -0,0 +1,4 @@
+class: Destroyer
+price: 0
+variants:
+  USS Maddox (DD-731): null
\ No newline at end of file
diff --git a/resources/units/ships/cva-31.yaml b/resources/units/ships/cva-31.yaml
new file mode 100644
index 00000000..6e9228da
--- /dev/null
+++ b/resources/units/ships/cva-31.yaml
@@ -0,0 +1,4 @@
+class: AircraftCarrier
+price: 0
+variants:
+  CVA-31 Bon Homme Richard: null
\ No newline at end of file