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USYRA MHS AMENDED MARCH 1983 |
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VPP - RUN: 4/15/83 2:58:30 |
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CERT# 24620 SAIL# 20879 |
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YACHT: ALCHURINGA |
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HYDROSTATICS & THEORETIC STABILITY |
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CLASS: PSN10M |
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VCG = VERTICAL CENTER OF GRAVITY |
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OWNER: |
VCB = VERTICAL CENTER OF BUOYANCY |
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GUNNER FROEBEL |
LCB = LONGITUDINAL CENTER OF BUOYANCY |
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25 SIDE HILL RD |
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WESTPORT CT 06880 |
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----------------------------- HYDROSTATIC DATA ----------------------------- |
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-- MEAS TRIM -- |
------ SAILING TRIM ------ |
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FLOTATION CONDITION: |
(NO CREW WGT) |
(WITH CREW WEIGHT) |
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HEEL IN DEGREES: |
0 |
2 |
0 |
2 |
25 |
X0? |
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DISPL'T LBS-SW: |
12273 |
12273 |
13839 |
13839 |
13839 |
25712 |
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WETTED AREA: |
252.9 |
252.8 |
236.8 |
263.7 |
256.8 |
336.3 |
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RIGHTING MOM'T/DEG: |
784 |
784 |
811 |
811 |
716 |
0 |
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VCG ABOVE MEASM'T WL: |
-0.29 |
-0.29 |
0.04 |
0.04 |
0.04 |
0.04 |
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VCB ABOVE MEASM'T WL: |
-0.81 |
-0.82 |
0.71 |
-0.72 |
-1.48 |
0.08 |
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LCB AFT OF STEM: |
18.13 |
18.13 |
18.62 |
18.62 |
18.62 |
19.14 |
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PRISMATIC COEF: |
0.511 |
0.511 |
0.524 |
0.524 |
0.514 |
0.537 |
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2ND MOMENT WL LENGTH: |
28.69 |
28.69 |
28.82 |
28.82 |
28.39 |
31.86 |
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--------------------------- THEORETICAL STABILITY --------------------------- |
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HEEL IN |
RT ARM |
RANGE OF |
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DEGREES |
IN FT |
POSITIVE |
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STABILITY |
AREA OF POSITIVE CURVE: 159 DG-FT |
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25 |
1.293 |
AREA OF NEGATIVE CURVE: 40 DG-FT |
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60 |
2.018 |
0 - 123 |
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90 |
1.435 |
DEGREES |
PCS AREA / NEG AREA: 3.961 |
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120 |
0.124 |
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150 |
-0.984 |
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165 |
-1.008 |
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EFFECTIVE BEAM: |
9.173 |
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BEAM/DEPTH RATIO: |
3.977 |
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KEEL DRAFT: |
5.835 |
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CENTERBOARD EXTENSION: |
0 |
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POUNDS PER INCH OF IMERSION: |
917 |
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MOMENT TO CHANGE TRIM 1 INCH: |
1194 |
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