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Thursday, October 14, 2004

My Ger/CB/1906 design was intended to be able to make 33 knots

My ship was intended to be able to make 33 knots at 120,000 SHP. The dimensions were 800ft x 85ft x 25.6ft at 25,000 tons displacement. The coefficients were Cp=0.53 and Cm=0.95. To actually make 25 knots, the design is required to be pressed by about 25%. This is part of the generated output from my program:

Designed draft=25.5564 ft

Hull Weight=10608.0 tons
Armament Weight= 2167.84
Total Armor Weight=2477.87
Machinery Weight=8581.08
General Equipment Weight=750.0
Normal Fuel Weight=750.0
Maximum Fuel added Weight=1875.0
Reserve Feedwater Weight=1111.0

Legend Displacement=26139.6

Legend Draft=26.7214

Submergence of 1226.82 of actual displacement per foot

At Displacement=26139.6

Length=800.0
Beam=85.0
Draft=26.7214
Cp=0.53
Cm=0.95
Cb=0.5035

At Displacement=26139.6
DLR=51.0539
Wetted Surface=73166.9
B/H=3.18098

At speed of 10knots power  is 2681.28 SHP
At speed of 11knots power  is 3515.47 SHP
At speed of 12knots power  is 4498.56 SHP
At speed of 13knots power  is 5645.86 SHP
At speed of 14knots power  is 6974.24 SHP
At speed of 15knots power  is 8617.25 SHP
At speed of 16knots power  is 10510.3 SHP
At speed of 17knots power  is 12626.6 SHP
At speed of 18knots power  is 14987.3 SHP
At speed of 19knots power  is 17605.7 SHP
At speed of 20knots power  is 20495.4 SHP
At speed of 21knots power  is 23647.6 SHP
At speed of 22knots power  is 27712.4 SHP
At speed of 23knots power  is 32301.0 SHP
At speed of 24knots power  is 37249.1 SHP
At speed of 25knots power  is 42618.2 SHP
At speed of 26knots power  is 48387.9 SHP
At speed of 27knots power  is 54567.8 SHP
At speed of 28knots power  is 61167.7 SHP
At speed of 29knots power  is 74726.2 SHP
At speed of 30knots power  is 91848.3 SHP
At speed of 31knots power  is 110051.0 SHP
At speed of 32knots power  is 129304.0 SHP
At speed of 33knots power  is 149739.0 SHP
At speed of 34knots power  is 171291.0 SHP

actual speed for 152400.0 SHP  is 33.1235

Waterline Coeff=0.65521

Block Coefficient=0.5035

Stability Coeff (nu)=0.546438

Height of CG as a fraction of the depth=0.546438

Freeboard=25.2786

Draft=26.7214

Beam=85.0

Metacentric height at legend displacement (GM)=7.49797

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