diff --git a/src/opengeodeweb_back/geode_objects.py b/src/opengeodeweb_back/geode_objects.py
index 8354d9d0..43dc5d02 100644
--- a/src/opengeodeweb_back/geode_objects.py
+++ b/src/opengeodeweb_back/geode_objects.py
@@ -122,6 +122,48 @@ def geode_objects_dict():
             "save_viewable": g_v.save_viewable_hybrid_solid3D,
             "inspector": og_inspector.inspect_solid3D,
         },
+        "ImplicitCrossSection": {
+            "parent": "CrossSection",
+            "input_factory": og_gs.ImplicitCrossSectionInputFactory,
+            "output_factory": og_gs.ImplicitCrossSectionOutputFactory,
+            "missing_files": og_gs.check_implicit_cross_section_missing_files,
+            "is_loadable": og_gs.is_implicit_cross_section_loadable,
+            "load": og_gs.load_implicit_cross_section,
+            "is_saveable": og_gs.is_implicit_cross_section_saveable,
+            "save": og_gs.save_implicit_cross_section,
+            "builder": og_gs.ImplicitCrossSectionBuilder,
+            "crs": {
+                "assign": og_gs.assign_section_geographic_coordinate_system_info,
+                "convert": og_gs.convert_section_coordinate_reference_system,
+                "create": og.create_section_coordinate_system,
+            },
+            "is_model": True,
+            "is_3D": False,
+            "is_viewable": True,
+            "save_viewable": g_v.save_viewable_implicit_cross_section,
+            "inspector": og_inspector.inspect_section,
+        },
+        "ImplicitStructuralModel": {
+            "parent": "StructuralModel",
+            "input_factory": og_gs.ImplicitStructuralModelInputFactory,
+            "output_factory": og_gs.ImplicitStructuralModelOutputFactory,
+            "missing_files": og_gs.check_implicit_structural_model_missing_files,
+            "is_loadable": og_gs.is_implicit_structural_model_loadable,
+            "load": og_gs.load_implicit_structural_model,
+            "is_saveable": og_gs.is_implicit_structural_model_saveable,
+            "save": og_gs.save_implicit_structural_model,
+            "builder": og_gs.ImplicitStructuralModelBuilder,
+            "crs": {
+                "assign": og_gs.assign_brep_geographic_coordinate_system_info,
+                "convert": og_gs.convert_brep_coordinate_reference_system,
+                "create": og.create_brep_coordinate_system,
+            },
+            "is_model": True,
+            "is_3D": True,
+            "is_viewable": True,
+            "save_viewable": g_v.save_viewable_implicit_structural_model,
+            "inspector": og_inspector.inspect_brep,
+        },
         "LightRegularGrid2D": {
             "input_factory": og.LightRegularGridInputFactory2D,
             "output_factory": og.LightRegularGridOutputFactory2D,
diff --git a/tests/data/test.og_istrm b/tests/data/test.og_istrm
new file mode 100644
index 00000000..8ef364b9
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diff --git a/tests/data/test.og_ixsctn b/tests/data/test.og_ixsctn
new file mode 100644
index 00000000..105f7603
Binary files /dev/null and b/tests/data/test.og_ixsctn differ