diff --git a/src/Mod/Ship/shipCreateShip/TaskPanel.py b/src/Mod/Ship/shipCreateShip/TaskPanel.py
index e56827df4..c323957a8 100644
--- a/src/Mod/Ship/shipCreateShip/TaskPanel.py
+++ b/src/Mod/Ship/shipCreateShip/TaskPanel.py
@@ -163,12 +163,15 @@ class TaskPanel:
         bounds[2] = maxZ - minZ
         # Set UI fields
         self.form.length.setMaximum(bounds[0])
+        self.form.length.setMinimum(0.001)
         self.form.length.setValue(bounds[0])
         self.L = bounds[0]
         self.form.beam.setMaximum(2.0*bounds[1])
+        self.form.beam.setMinimum(0.001)
         self.form.beam.setValue(2.0*bounds[1])
         self.B = 2.0*bounds[1]
         self.form.draft.setMaximum(bounds[2])
+        self.form.draft.setMinimum(0.001)
         self.form.draft.setValue(0.5*bounds[2])
         self.T = 0.5*bounds[2]
         msg = Translator.translate("Ready to work\n")