 The Dutch naval plan 1855 stated that the steam corvette of 250 hp and 12 30-pounders (the Groningen-class corvettes) would be the standard warship for the Dutch East Indies.However, the plan also recognized that in the East Indies, there were 'too many points to occupy, too many seas to patrol, and too many corners to penetrate' to use only these still costly ships.The plan 1855 therefore specified a second type of ships for the indies