diff --git a/beamforming/c/bem.c b/beamforming/c/bem.c
new file mode 100644
index 0000000..7d14399
--- /dev/null
+++ b/beamforming/c/bem.c
@@ -0,0 +1,20 @@
+// bem.c
+//
+// Author: J.A. de Jong -ASCEE
+// 
+// Description:
+//
+//////////////////////////////////////////////////////////////////////
+#include "types.h"
+
+typedef struct {
+    umat elem;
+    vd nodes;
+    ElemType elemtype;
+} BemMesh;
+
+int Ms_osc_free(BemMesh* mesh,cmat* Ms) {
+
+
+}
+//////////////////////////////////////////////////////////////////////