An 870 ton 1905 destroyer

My German 1905 destroyer (admittedly, a "super ship") was 870 tons designed displacement. I seem not to be able to make that work with my program. The "Standard Displacement" is 865 tons, but the "normal displacement" is 1,103 tons. The machinery produces 27,000 SHP and a speed of 32 knots at the normal displacement. The dimensions are 270ft x 28ft x 10.46ft, with coefficients of Cp=0.66 and Cm=0.74. The armament is 2-4in/50 QF and 2-18in TT (actually 17.7in). All 18in torpedoes of this era were actually 45cm in diameter, even the British "18in".