diff --git a/Model/create_table_for_save_as.py b/Model/create_table_for_save_as.py
index 96d0af5..bfcb2c0 100644
--- a/Model/create_table_for_save_as.py
+++ b/Model/create_table_for_save_as.py
@@ -104,7 +104,7 @@ class CreateTableForSaveAs:
           tmax_index INTEGER, tmax_value FLOAT,
           rmin_index INTEGER, rmin_value FLOAT,
           rmax_index INTEGER, rmax_value FLOAT,
-          freq_bottom_detection_index FLOAT,
+          freq_bottom_detection_index INTEGER,
           freq_bottom_detection_value STRING,
           depth_bottom_detection_min FLOAT,
           depth_bottom_detection_max FLOAT,
@@ -455,9 +455,9 @@ class CreateTableForSaveAs:
                     int(stg.rmax[i][0]), stg.rmax[i][1],
                     stg.freq_bottom_detection[i][0],
                     stg.freq_bottom_detection[i][1],
-                    stg.depth_bottom_detection_min,
-                    stg.depth_bottom_detection_max,
-                    stg.depth_bottom_detection_interval,
+                    stg.depth_bottom_detection_min[i],
+                    stg.depth_bottom_detection_max[i],
+                    stg.depth_bottom_detection_interval[i],
                     stg.SNR_filter_value[i],
                     stg.Nb_cells_to_average_BS_signal[i]
                 )
diff --git a/Model/read_table_for_open.py b/Model/read_table_for_open.py
index fa3292c..e18fb97 100644
--- a/Model/read_table_for_open.py
+++ b/Model/read_table_for_open.py
@@ -528,9 +528,9 @@ class ReadTableForOpen:
             stg.rmin.append((next(it), next(it)))
             stg.rmax.append((next(it), next(it)))
             stg.freq_bottom_detection.append((next(it), next(it)))
-            stg.depth_bottom_detection_min = next(it)
-            stg.depth_bottom_detection_max = next(it)
-            stg.depth_bottom_detection_interval = next(it)
+            stg.depth_bottom_detection_min.append(next(it))
+            stg.depth_bottom_detection_max.append(next(it))
+            stg.depth_bottom_detection_interval.append(next(it))
             stg.SNR_filter_value.append(next(it))
             stg.Nb_cells_to_average_BS_signal.append(next(it))
 
diff --git a/View/acoustic_data_tab.py b/View/acoustic_data_tab.py
index 2b2be51..4064e3d 100644
--- a/View/acoustic_data_tab.py
+++ b/View/acoustic_data_tab.py
@@ -760,7 +760,6 @@ class AcousticDataTab(QWidget):
         self.water_attenuation()
         self.compute_tmin_tmax()
         self.compute_rmin_rmax()
-        self.set_range_for_spinboxes_bathymetry()
 
         self.combobox_ABS_system_choice.blockSignals(False)
         self.fileListWidget.blockSignals(False)
@@ -1688,6 +1687,9 @@ class AcousticDataTab(QWidget):
         stg.val_bottom.append([])
         stg.ind_bottom.append([])
         stg.freq_bottom_detection.append((0, 0))
+        stg.depth_bottom_detection_min.append(0.0)
+        stg.depth_bottom_detection_max.append(0.0)
+        stg.depth_bottom_detection_interval.append(0.0)
 
         stg.BS_mean.append(np.array([]))
         stg.BS_noise_raw_data.append(np.array([]))
@@ -2826,28 +2828,41 @@ class AcousticDataTab(QWidget):
             self.lineEdit_slider.setText(
                 str(stg.time[self.fileListWidget.currentRow()][self.combobox_frequency_profile.currentIndex(), self.slider.value()-1]))
 
-
+    @trace
     def update_bottom_detection_settings(self):
+        data_id = max(0, self.fileListWidget.currentRow())
+
+        self.combobox_frequency_bathymetry.setCurrentIndex(
+            int(stg.freq_bottom_detection[data_id][0])
+        )
+
         self.lineEdit_depth_min_bathy.setText(
-            str(stg.depth_bottom_detection_min)
+            str(stg.depth_bottom_detection_min[data_id])
         )
 
         self.lineEdit_depth_max_bathy.setText(
-            str(stg.depth_bottom_detection_max)
+            str(stg.depth_bottom_detection_max[data_id])
         )
 
         self.lineEdit_next_cell_bathy.setText(
-            str(stg.depth_bottom_detection_interval)
+            str(stg.depth_bottom_detection_interval[data_id])
         )
 
     def save_bottom_detection_settings(self):
-        stg.depth_bottom_detection_min = float(
+        data_id = max(0, self.fileListWidget.currentRow())
+
+        stg.freq_bottom_detection[data_id] = (
+            int(self.combobox_frequency_bathymetry.currentIndex()),
+            str(self.combobox_frequency_bathymetry.currentText()),
+        )
+
+        stg.depth_bottom_detection_min[data_id] = float(
             self.lineEdit_depth_min_bathy.text()
         )
-        stg.depth_bottom_detection_max = float(
+        stg.depth_bottom_detection_max[data_id] = float(
             self.lineEdit_depth_max_bathy.text()
         )
-        stg.depth_bottom_detection_interval = float(
+        stg.depth_bottom_detection_interval[data_id] = float(
             self.lineEdit_next_cell_bathy.text()
         )