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Sunday, October 17, 2004

The first run from my program for Colonel Cuniberti's battleship

I found that if I severely cut back the armor protection, I could get a reasonable result for Colonel Cuniberti's "Ideal Battleship for the British Navy" from 1903. Instead of a 12in armor basis, I found that a 9in basis was more workable. I also had to give pretty powerful machinery to achieve the desired speed, and to use a lighter-weight machinery to do it:

Designed draft=27.8055 ft

Hull Weight=6511.95 tons
Tertiary Battery Weight=3.8916
Armament Weight= 3013.89
Total Armor Weight=3261.92
Machinery Weight=3375.0
General Equipment Weight=510.0
Normal Fuel Weight=510.0
Maximum Fuel added Weight=1275.0
Reserve Feedwater Weight=393.66

Legend Displacement=17630.8

Legend Draft=28.8372

Submergence of 768.321 of actual displacement per foot

At Displacement=17630.8

Length=521.5 ft
Beam=82.0 ft
Draft=28.8372 ft
Cp=0.556
Cm=0.9
Cb=0.5004

DLR=124.311
Wetted Surface=48515.7
B/H=2.84355

At speed of 10knots power  is 1983.53 SHP
At speed of 11knots power  is 2596.19 SHP
At speed of 12knots power  is 3404.1 SHP
At speed of 13knots power  is 4408.89 SHP
At speed of 14knots power  is 5567.12 SHP
At speed of 15knots power  is 6881.56 SHP
At speed of 16knots power  is 8365.81 SHP
At speed of 17knots power  is 10018.2 SHP
At speed of 18knots power  is 12518.6 SHP
At speed of 19knots power  is 15375.7 SHP
At speed of 20knots power  is 18522.1 SHP
At speed of 21knots power  is 21955.0 SHP
At speed of 22knots power  is 25689.7 SHP
At speed of 23knots power  is 31378.4 SHP
At speed of 24knots power  is 46152.3 SHP
At speed of 25knots power  is 61598.7 SHP

actual speed for 54000.0 SHP  is 24.5081



Deep Load Displacement=19299.4

Deep Load Draft=30.9476

Submergence of 778.621 of actual displacement per foot

At Displacement=19299.4

Length=521.5
Beam=82.0
Draft=30.9453
Cp=0.56434
Cm=0.9045
Cb=0.510445

DLR=136.076
Wetted Surface=50759.7
B/H=2.64984

At speed of 10knots power  is 2093.98 SHP
At speed of 11knots power  is 2740.18 SHP
At speed of 12knots power  is 3593.29 SHP
At speed of 13knots power  is 4654.88 SHP
At speed of 14knots power  is 5878.19 SHP
At speed of 15knots power  is 7266.12 SHP
At speed of 16knots power  is 8832.88 SHP
At speed of 17knots power  is 10576.8 SHP
At speed of 18knots power  is 13371.3 SHP
At speed of 19knots power  is 16583.1 SHP
At speed of 20knots power  is 20119.5 SHP
At speed of 21knots power  is 23977.4 SHP
At speed of 22knots power  is 28173.0 SHP
At speed of 23knots power  is 34664.5 SHP
At speed of 24knots power  is 51432.0 SHP
At speed of 25knots power  is 68328.5 SHP

actual speed for 54000.0 SHP  is 24.152


At Legend Displacement:

Waterline Coeff=0.671089

Block Coefficient=0.5004

CG of hull=21.7742 Hull Wt=6511.95
CG of machinery=11.3933 Mach Wt=3375.0
Armor Center of gravity=43.6179
CG of armor=43.6179 Armor Wt=5324.78
CG of normal fuel=12.1954 Normal Fuel Wt=765.0
CG of max fuel= n/a  Additional Max Fuel Wt=0.0
CG of upper works=69.12 Upper Works Wt=71.3698
CG of general equipment=28.08 General Equip Wt=510.0
Main Armament CG=50.0 Main armament wt=3013.89
Secondary Batt CG=0.0 Secondary Batt wt: 0.0
Tertiary Batt CG=0.0 Tertiary Batt wt: 3.8916

CG above keel = 30.23

Stability Coeff (nu)=0.559814

Height of CG as a fraction of the depth=0.559814

Freeboard=25.1628 ft
Draft=28.8372 ft
Beam=82.0 ft

Metacentric height at legend displacement (GM)=5.20457 ft


At Deep Load Displacement:

Waterline Coeff=0.671089

Block Coefficient=0.5004

CG of hull=21.7742 Hull Wt=6511.95
CG of machinery=11.3933 Mach Wt=3375.0
Armor Center of gravity=44.4982
CG of armor=44.4982 Armor Wt=5324.78
CG of normal fuel=12.6479 Normal Fuel Wt=765.0
CG of max fuel=12.6479 Additional Max Fuel Wt=1275.0
CG of upper works=69.12 Upper Works Wt=71.3698
CG of general equipment=28.08 General Equip Wt=510.0
Main Armament CG=50.0 Main armament wt=3013.89
Secondary Batt CG=0.0 Secondary Batt wt: 0.0
Tertiary Batt CG=0.0 Tertiary Batt wt: 3.8916

CG above keel = 28.6229

Stability Coeff (nu)=0.530053

Height of CG as a fraction of the depth=0.530053

Freeboard=23.0524
Draft=30.9476
Beam=82.0

Metacentric height at deep load displacement (GM)=6.77938 ft

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