Blake-class
Edgar-class
Powerful-class
Displacement 7,350 tons and as dimensions 118,1 x 60 metres or 387,5 x 60 feet,
Coal fired machinery consisted of 2-2 cylinder vertical triple steam expansion engines and 4 double ended cylindrical boilers supplying 10.957 (trial natural draught)-13.484 (trial forced draught) ihp. Speed 19,5 (trial natural draught)-20,5 (trial forced draught). and with a speed of 10 knots a range of 10.000 nautical miles. Crew numbered 571 men. Armour consisted of a 7,6cm/3”-12,7cm/5” deck with the casemate protected by 15,2cm/6” thick armour and the main guns by 7,6cm/3” thick shields and the conning tower by 25,4cm/10”. Armament consisted of 2x1-23,37cm/9.2” inch breech loading Mk VI guns, 10x1-5,24cm/6” quick firing guns and 12x1-6pd guns.