License and Copyright iii
Contents. v
About this Manual 1
Chapter 1 Introduction. 3
Chapter 2 Quickstart 7
Upright Hydrostatics Quickstart 8
Large Angle Stability Quickstart 9
Equilibrium Condition Quickstart 10
Specified Condition Quickstart 11
KN Values Quickstart 12
Limiting KG Quickstart 13
Floodable Length Quickstart 14
Longitudinal Strength Quickstart 15
Tank Calibrations Quickstart 16
Chapter 3 Using Hydromax. 17
Getting Started. 18
Installing Hydromax. 18
Starting Hydromax. 18
Hydromax Model 19
Preparing a Design in Maxsurf 19
Opening a New Design. 22
Opening an Existing Hydromax Design File. 23
Updating the Hydromax Model 25
Hydromax Sections Forming. 25
Checking the Hydromax model 29
Setting Initial Conditions. 31
Working with Loadcases. 33
Modelling Compartments. 40
Forming Compartments. 52
Compartment Types. 55
Sounding Pipes. 57
Damage Case Definition. 58
Key Points (e.g. Down Flooding Points) 60
Margin Line Points. 62
Modulus Points and Allowable Shears and Moments. 63
Floodable Length Bulkheads. 63
Stability Criteria. 63
Analysis Types. 64
Upright Hydrostatics. 65
Large Angle Stability. 67
Equilibrium Analysis. 70
Specified Conditions. 73
KN Values Analysis. 75
Limiting KG. 78
Floodable Length. 81
Longitudinal Strength. 84
Tank Calibrations. 87
Starting and Stopping Analyses. 90
Batch Analysis. 91
Analysis Settings. 94
Heel 94
Trim.. 95
Draft 96
Displacement 96
Specified Conditions. 97
Permeability. 97
Tolerances. 98
Analysis Environment Options. 100
Fluids Analysis Methods. 100
Density of Fluids. 101
Waveform.. 103
Grounding. 104
Hog and Sag. 105
Stability Criteria. 106
Damage. 106
Analysis Output 107
Reporting. 108
Copying & Printing. 109
Select View from Analysis Data. 110
Saving the Hydromax Design. 110
Exporting. 111
Chapter 4 Stability Criteria. 113
Criteria Concepts. 114
Criteria Procedures. 118
Starting the Criteria dialog. 118
Resizing the Criteria dialog. 119
Working with Criteria. 119
Editing Criteria. 122
Working with Criteria Libraries. 123
Criteria Results. 126
Nomenclature. 128
Definitions of GZ curve features. 128
Glossary. 131
Chapter 5 Hydromax Reference. 133
Windows. 134
View Window.. 134
Loadcase Window.. 135
Damage Window.. 136
Input Window.. 136
Results Window.. 138
Graph Window.. 140
Report Window.. 143
Toolbars. 147
Menus. 149
File Menu. 149
Edit Menu. 150
View Menu. 152
Analysis Menu. 153
Case Menu. 156
Display Menu. 157
Window Menu. 159
Help Menu. 159
Appendix A
Calculation of Form Parameters. 161
Definition and calculation of form parameters. 161
Potential for errors in hydrostatic calculations. 168
Reference Designs. 169
Reference Calculations. 170
Appendix B
Criteria file format 172
Appendix C
Criteria Help. 176
Parent Heeling Arms. 177
Heeling Arm Definition. 177
Parent Heeling Moments. 184
Parent Stability Criteria. 186
Criteria at Equilibrium.. 186
GZ Curve Criteria (non-heeling arm) 187
Heeling arm criteria (xRef) 203
Heeling arm criteria. 203
Multiple heeling arm criteria. 220
Heeling arm, combined criteria. 226
Other combined criteria. 230
Appendix D Specific Criteria. 233
Heeling arms for specific criteria - Note on unit
conversion. 233
ISO 12217: Small craft – stability and buoyancy
assessment and categorisation. 239
Appendix E
Reference Tables. 242
File Extension Reference Table. 242
Analysis settings reference table. 243
Index. 244