(ii)to the unloading or loading of a ship under conditions approved by the Conservator by means of steam from her own boilers or power generated by electric motors or internal combustion engines placed in a position away from cargo holds and pump rooms or by means of electric motors, so designed, constructed and maintained as to be incapable of igniting inflammable vapour and maintained in accordance with the requirements specified by Lloyds or other ship surveyors approved by the Central Government.
