diff --git a/src/util/C3Spline.cpp b/src/util/C3Spline.cpp
new file mode 100644
index 0000000..e9c8e48
--- /dev/null
+++ b/src/util/C3Spline.cpp
@@ -0,0 +1,20 @@
+#include "util/C3Spline.hpp"
+#include <tempest/vector/C3Vector.hpp>
+
+CDataStore& operator>>(CDataStore& msg, C3Spline_CatmullRom& spline) {
+    uint32_t pointCount = 0;
+    msg.Get(pointCount);
+
+    void* points;
+    msg.GetDataInSitu(points, sizeof(C3Vector) * pointCount);
+
+    uint8_t splineMode;
+    msg.Get(splineMode);
+    // TODO spline.splineMode = splineMode;
+
+    if (pointCount && msg.IsValid()) {
+        // TODO spline.SetPoints()
+    }
+
+    return msg;
+}
diff --git a/src/util/C3Spline.hpp b/src/util/C3Spline.hpp
new file mode 100644
index 0000000..8a1c170
--- /dev/null
+++ b/src/util/C3Spline.hpp
@@ -0,0 +1,20 @@
+#ifndef UTIL_C3_SPLINE_HPP
+#define UTIL_C3_SPLINE_HPP
+
+#include <common/DataStore.hpp>
+
+// TODO move these classes to typhoon
+class C3Spline {
+    public:
+        // TODO
+};
+
+class C3Spline_CatmullRom : public C3Spline {
+    public:
+        // TODO
+};
+
+// TODO move this operator>> to util/DataStore.hpp
+CDataStore& operator>>(CDataStore& msg, C3Spline_CatmullRom& spline);
+
+#endif