diff --git a/autotest/gdrivers/s102.py b/autotest/gdrivers/s102.py
index 1d41ac6dc7b2..21112d395f72 100755
--- a/autotest/gdrivers/s102.py
+++ b/autotest/gdrivers/s102.py
@@ -454,7 +454,10 @@ def validate(
     errors, warnings, checks_done = validate_s102.check(filename)
 
     if expected_errors:
-        assert errors == expected_errors
+        assert len(errors) == len(expected_errors)
+        for error, expected_error in zip(errors, expected_errors):
+            assert error[0] == expected_error[0]
+            assert expected_error[1] in error[1]
     else:
         if errors:
             print(errors)
@@ -621,7 +624,7 @@ def test_s102_validator():
         ),
         (
             "Critical error",
-            "/BathymetryCoverage/BathymetryCoverage.01/Group_001/values type is not uint32",
+            "/QualityOfBathymetryCoverage/QualityOfBathymetryCoverage.01/Group_001/values type is not uint32",
         ),
     ]
     expected_warnings = [
diff --git a/swig/python/gdal-utils/osgeo_utils/samples/validate_s102.py b/swig/python/gdal-utils/osgeo_utils/samples/validate_s102.py
index 56e2e6202cbd..978460ca6998 100755
--- a/swig/python/gdal-utils/osgeo_utils/samples/validate_s102.py
+++ b/swig/python/gdal-utils/osgeo_utils/samples/validate_s102.py
@@ -838,6 +838,31 @@ def _validate_BathymetryCoverage(self, f):
                 BathymetryCoverage, "dataCodingFormat", expected_values
             )
 
+        if "interpolationType" in BathymetryCoverage.attrs:
+            expected_values = {
+                1: "nearestneighbor",
+                5: "bilinear",
+                6: "biquadratic",
+                7: "bicubic",
+                9: "barycentric",
+                10: "discrete",
+            }
+            self._validate_enumeration(
+                BathymetryCoverage, "interpolationType", expected_values
+            )
+
+        if "dataOffsetCode" in BathymetryCoverage.attrs:
+            expected_values = {
+                1: 'XMin, YMin ("Lower left") corner ("Cell origin")',
+                2: 'XMax, YMax ("Upper right") corner',
+                3: 'XMax, YMin ("Lower right") corner',
+                4: 'XMin, YMax ("Upper left") corner',
+                5: "Barycenter (centroid) of cell",
+            }
+            self._validate_enumeration(
+                BathymetryCoverage, "dataOffsetCode", expected_values
+            )
+
         horizontalPositionUncertainty = _get_float_attr_or_none(
             BathymetryCoverage, "horizontalPositionUncertainty"
         )
diff --git a/swig/python/gdal-utils/osgeo_utils/samples/validate_s104.py b/swig/python/gdal-utils/osgeo_utils/samples/validate_s104.py
index 7cb4386fa9bc..0cdeb8e85c50 100755
--- a/swig/python/gdal-utils/osgeo_utils/samples/validate_s104.py
+++ b/swig/python/gdal-utils/osgeo_utils/samples/validate_s104.py
@@ -1152,6 +1152,27 @@ def _validate_WaterLevel(self, f):
             }
             self._validate_enumeration(WaterLevel, "dataCodingFormat", expected_values)
 
+        if "interpolationType" in WaterLevel.attrs:
+            expected_values = {
+                1: "nearestneighbor",
+                5: "bilinear",
+                6: "biquadratic",
+                7: "bicubic",
+                9: "barycentric",
+                10: "discrete",
+            }
+            self._validate_enumeration(WaterLevel, "interpolationType", expected_values)
+
+        if "dataOffsetCode" in WaterLevel.attrs:
+            expected_values = {
+                1: 'XMin, YMin ("Lower left") corner ("Cell origin")',
+                2: 'XMax, YMax ("Upper right") corner',
+                3: 'XMax, YMin ("Lower right") corner',
+                4: 'XMin, YMax ("Upper left") corner',
+                5: "Barycenter (centroid) of cell",
+            }
+            self._validate_enumeration(WaterLevel, "dataOffsetCode", expected_values)
+
         self._log_check("104_Dev2005")
         horizontalPositionUncertainty = _get_float_attr_or_none(
             WaterLevel, "horizontalPositionUncertainty"
diff --git a/swig/python/gdal-utils/osgeo_utils/samples/validate_s111.py b/swig/python/gdal-utils/osgeo_utils/samples/validate_s111.py
index 965e4a78f05e..8adec51bbd1b 100755
--- a/swig/python/gdal-utils/osgeo_utils/samples/validate_s111.py
+++ b/swig/python/gdal-utils/osgeo_utils/samples/validate_s111.py
@@ -1214,6 +1214,31 @@ def _validate_SurfaceCurrent(self, f):
                 SurfaceCurrent, "dataCodingFormat", expected_values
             )
 
+        if "interpolationType" in SurfaceCurrent.attrs:
+            expected_values = {
+                1: "nearestneighbor",
+                5: "bilinear",
+                6: "biquadratic",
+                7: "bicubic",
+                9: "barycentric",
+                10: "discrete",
+            }
+            self._validate_enumeration(
+                SurfaceCurrent, "interpolationType", expected_values
+            )
+
+        if "dataOffsetCode" in SurfaceCurrent.attrs:
+            expected_values = {
+                1: 'XMin, YMin ("Lower left") corner ("Cell origin")',
+                2: 'XMax, YMax ("Upper right") corner',
+                3: 'XMax, YMin ("Lower right") corner',
+                4: 'XMin, YMax ("Upper left") corner',
+                5: "Barycenter (centroid) of cell",
+            }
+            self._validate_enumeration(
+                SurfaceCurrent, "dataOffsetCode", expected_values
+            )
+
         self._log_check("111_Dev2005")
         horizontalPositionUncertainty = _get_float_attr_or_none(
             SurfaceCurrent, "horizontalPositionUncertainty"