Model Rijksmuseum, Amsterdam, Netherlands
Designed by L.K. Turk (Chief naval engineer/director navy shipbuilding) and lieutenant Klerk, laid down at the navy yard at Vlissingen, Netherlands 15 April 1857, launched 1858, involved in a a collision with a fishery vessel when she left the Dokhaven at Vlissingen 30 October, 6 men were killed when one of her guns exploded why lying at Willemsoord, Netherlands 25 July 1859, navy budget discussions parliaments member Van Loghem was opponent of armouring her, 21 May 1863, fitted out with leeboards in 1865, used as training ship for gunners when in navy budget 1871 was decided to replace her by the Vulkan, decommissioned 6 April1877 and converted into a ‘vlotschuit‘ [a kind of lighter], displacement 150 tons, dimensions 20,00 x 7,40 x 1,4 (1-10-1877)-1,80 metres, in 1877 a crew of 20 men and an armament of 5 guns(4-middle 30pd guns, 1-20cm mortar). Against the building of the Pro Patria and her sister ships is protested while the building costs were much higher (twice) as the large gunboats while the latter had better sailing qualities. Building costs of the Pro Patria without being fitted out were more as ƒ 40.000,00. In 1870 were to costs to held her in annual service with a crew of 30 men ƒ 11.134,00.
