Section 112. Exemption of canal officers from arrest in civil actions

Neither the corporation, nor any officer or responsible employee in  the
  corporation  in  charge  of canal structures or forces thereof, or other
  public officer employed upon or in charge of the canal  system  or  part
  thereof  shall  be  liable  to arrest or to be held to bail in any civil
  action for any act done or omitted to be done by it in the  exercise  of
  its  official  duties,  nor  be  subject to military duty while actually
  engaged in their respective employments upon the canal system while  the
  same is navigable.