My warship general design program: status

I made quite a bit of progress this weekend. I now have my code to compute metacentric height "working", in the sense that it runs and generates plausible numbers using equations from William Hovgaard's book, General Design of Warships. This is some of what the program generates (some of it just for debugging purposes):

Ship:  Ger/CB/1906

Submergence of 1277.66 of actual displacement per foot
Displacement=30800.0 tons
Length=814.0ft
Beam=87.0ft
Draft=30.2326ft
Cp=0.53
Cm=0.95
Cb=0.5035

Displacement=30800.0
DLR=57.1055
Wetted Surface=80113.8
B/H=2.87769

At speed of 10knots power is 2949.25 SHP
At speed of 11knots power is 3867.17 SHP
At speed of 12knots power is 4946.95 SHP
At speed of 13knots power is 6206.73 SHP
At speed of 14knots power is 7661.17 SHP
At speed of 15knots power is 9468.02 SHP
At speed of 16knots power is 11564.1 SHP
At speed of 17knots power is 13912.3 SHP
At speed of 18knots power is 16531.2 SHP
At speed of 19knots power is 19444.7 SHP
At speed of 20knots power is 22639.6 SHP
At speed of 21knots power is 26134.2 SHP
At speed of 22knots power is 30474.6 SHP
At speed of 23knots power is 35539.3 SHP
At speed of 24knots power is 41019.4 SHP
At speed of 25knots power is 46925.4 SHP
At speed of 26knots power is 53291.7 SHP
At speed of 27knots power is 60110.0 SHP
At speed of 28knots power is 67420.9 SHP
At speed of 29knots power is 80560.5 SHP
At speed of 30knots power is 100888.0 SHP
At speed of 31knots power is 122507.0 SHP
At speed of 32knots power is 145428.0 SHP
At speed of 33knots power is 169711.0 SHP
actual speed for 146000.0 SHP is 32.0236

Hull Weight=12393.2

Main battery type=12in/45
found main battery gun: 12in/45
Main battery gun weight=57.67
found secondary battery gun
Secondary Battery gun weight: 2.2

Lower Belt Weight: 480.0
Upper Belt Weight: 480.0
Upper deck weight: 1566.0
Lower deck weight: 848.25

Main Battery armor thickness: 6.0

Machinery Weight=8111.11
General Equipment Weight=924.0
Normal Fuel Weight=924.0

Legend Displacement=28540.5
Deep Load Displacement=30850.5
Deep Load Draft=29.6884

Waterline Coeff=0.65521

Block Coefficient=0.5035

CG of hull=29.4118
CG of machinery=29.2
CG Lower Armor Belt=30.2326
CG Lower Armor Belt M=14511.7
CG Upper Armor Belt=40.2326
CG Armor deck slopes=30.2326
CG lower armor deck=34.2326
CG upper armor deck=42.2326

Total Armor Wt=4483.48

CG of armor=36.3691
CG of normal fuel=24.1861
CG of upper works=82.5
CG of general equipment=42.5

Main battery type=12in/45
found main battery gun: 12in/45
Main battery gun weight=57.67 tons
Armament Weight: 1088.73 tons
Armament CG=52.7326ft
CG above keel = 31.9127ft
Stability Coeff (nu)=0.638254
Height of CG as a fraction of the depth=0.638254
Freeboard=19.7674ft
Draft=30.2326ft
Beam=87.0ft

Metacentric height (GM)=4.50924