Glacier Boats of Alaska LLC

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Glacier Boats of Alaska LLC - Hydrostatics & Stability Report
General Model Information
December 06, 2005 10:09:21 PM
Company Project Description
Glacier Boats of Alaska LLC Great Alaskan 26
Parts Mirrored Up Direction Fluid Density Refinement Trimming
No Positive 0.037 pounds/inches^3 N/A N/A

FreeFloat Condition
Mass Properties Units(inches, pounds)
Weight LCG TCG VCG
3,800.000 203.000 0.000 27.280
Flotation Plane Definition Units (inches)
Constant N (longitudinal) N (transverse) N (vertical)
10.640 -0.004 0.000 1.000
Overall Dimensions Units (inches)
Name Value
Length OA 311.749
Length WL 262.862
Beam OA 98.982
Beam WL 79.130
Depth 63.236
Freeboard 51.358
Draft 11.878
Integrated Properties Units ( inches, inches^2 , inches^3 , pounds)
Name Value Name Value
Volume 102,504.956 Displacement 3,799.140
LCB 203.060 LCB/LWL 0.616
TCB 0.000 VCB 7.623
Max Section Area 620.716 Long'l Loc Max Area 265.170
Wetted Surface 18,494.668 Wetted Centroid (longitudinal) 197.073
Wetted Centroid (transverse) 0.000
Wetted Centroid (vertical) 5.468
Displacement-Length Ratio 161.361
Waterplane Properties Units ( inches, inches^2 , inches^3 , pounds/inches, inches-pounds/inches)
Name Value Name Value
LCF 195.574 LCF/LWL 0.587
TCF 0.000 VCF 11.444
M Trans 66.306 M Long 680.396
BM Trans 70.157 BM Long 684.248
Area WP 16,471.489 Weight to Immerse 610.483
Moment to Trim 9,439.485 Metacentric Shelf Slope 0.151
Neutral Axis Angle 0.000° Metacentric Shelf Intercept 49.959
Form Coefficients Units (N/A)
Name Value Name Value
Cb 0.415 Cwp 0.792
Cx 0.660 Cp 0.628
Cp aft 0.610 Cp fwd 0.589
Stability Information Units ( inches, pounds-inches, deg)
Name Value Name Value
Righting Moment/deg 3,349.146
GM Trans 50.500 GM Long 664.591
Trim 0.236° Heel 0.000°
Critical Point Data Units ( inches)
Critical Point Dist Above WL Longitudinal Transverse Vertical
Aft Sheer - Stbd 31.996 215.000 40.310 43.520
Aft Sheer - Port 31.996 215.000 -40.310 43.520
Rollover Summary
GZ v. Heel
(Click for full screen chart)
Critical Points Height Above WL Units ( inches)
Heel Aft Sheer - Stbd Aft Sheer - Port
0.000 31.997 31.997
2.000 33.400 30.586
4.000 34.800 29.177
6.000 36.218 27.791
8.000 37.659 26.439
10.000 39.135 25.136
12.000 40.610 23.848
14.000 42.085 22.581
16.000 43.555 21.334
18.000 45.017 20.105
20.000 46.467 18.894
22.000 47.901 17.700
24.000 49.316 16.525
26.000 50.709 15.368
28.000 52.080 14.231
30.000 53.425 13.115
32.000 54.743 12.021
34.000 56.033 10.951
36.000 57.296 9.908
38.000 58.529 8.894
40.000 59.738 7.916
42.000 60.932 6.988
44.000 62.126 6.124
46.000 63.297 5.305
48.000 64.411 4.500
50.000 65.464 3.706
52.000 66.451 2.922
54.000 67.368 2.146
56.000 68.214 1.377
58.000 68.985 0.616
60.000 69.681 -0.138

Notes
  1. Dimensions are given relative to coordinate system origin, except for M Trans and M Long which are given relative to the resultant waterplane.
  2. Accuracy of calculations is affected by the density of points in the surface mesh.
  3. All coefficients are based on LWL and maximum draft above.
  4. The accuracy of the sectional area curve, maximum section area and location, and prismatic and midship section coefficients are affected by the surface mesh density, and the number and location of defined stations. In addition, for trimmed waterplanes the sections are no longer exactly perpendicular to the waterplane, also affecting accuracy.
  5. The displacement-length ratio is defined as the computed vessel displacement in long tons divided by the cube of one-hundredth of the waterline length in feet.