 There might be some doubt about the lead ship of the class "Vesuvius" because of an error that Tideman made in his famous "Memoriaal" (1880).In a table Tideman gives the "Vesuvius" as a Schroefstoomschip 4th class that was no longer in use, but it was a Schroefstoomschip 3rd class.The table then gives a displacement of 586t, a length of 40.7 m and a power of 80 hp.