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 Analysis 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 20
Preparing a Design in Maxsurf 20
Opening a New Design. 23
Opening an Existing Hydromax Design File. 24
Updating the Hydromax Model 25
Hydromax Sections Forming. 26
Checking the Hydromax model 29
Analysis Input 33
Setting Initial Conditions. 33
Working with Loadcases. 35
Modelling Compartments. 40
Forming Compartments. 50
Compartment Types. 53
Sounding Pipes. 55
Damage Case Definition. 56
Key Points (e.g. Down Flooding Points) 58
Margin Line Points. 60
Modulus Points and Allowable Shears and Moments. 61
Stability Criteria. 61
Analysis Types. 62
Upright Hydrostatics. 63
Large Angle Stability. 65
Equilibrium Analysis. 68
Specified Conditions. 72
KN Values Analysis. 74
Limiting KG.. 77
Floodable Length. 80
Longitudinal Strength. 84
Tank Calibrations. 87
Starting and Stopping Analyses. 90
Batch Analysis. 91
Analysis Settings. 93
Heel 93
Trim.. 94
Draft 95
Displacement 95
Specified Conditions. 96
Permeability. 96
Error Values. 97
Analysis Environment Options. 99
Fluids Analysis Methods. 99
Density. 100
Waveform.. 101
Grounding. 102
Hog and Sag. 104
Stability Criteria. 105
Damage. 105
Analysis Output 106
Select View from Analysis Data. 107
Copying. 108
Saving the Hydromax Design. 110
Exporting. 112
Chapter 4 Stability Criteria. 113
Criteria Overview.. 114
Setting up Criteria - the Criteria Dialog. 115
Starting the Criteria dialog. 115
Resizing and adjusting the dialog’s layout 116
Criteria Tree List 117
Criteria Details. 121
Criteria Help. 123
Importing and Saving Criteria Sets. 123
Parent Heeling Arms. 125
Heeling arm definition. 125
Heeling arms for specific criteria - Note on unit
conversion. 131
Parent Heeling Moments. 138
Parent Stability Criteria. 140
Criteria at Equilibrium.. 140
GZ Curve Criteria (non-heeling arm) 141
Heeling arm criteria (xRef) 158
Heeling arm criteria. 159
Multiple heeling arm criteria. 174
Heeling arm, combined criteria. 178
Other combined criteria. 183
Specific stability criteria. 186
ISO 12217: Small craft – stability and buoyancy
assessment and categorisation. 186
Criteria Results. 189
Nomenclature. 191
Definitions of GZ curve features: 191
Glossary. 194
Chapter 5 Hydromax Reference. 195
Windows. 196
View Window.. 197
Loadcase Window.. 198
Damage Window.. 199
Input Window.. 199
Results Window.. 200
Graph Window.. 204
Report Window.. 206
Toolbars. 210
Menus. 212
File Menu. 212
Edit Menu. 213
View Menu. 215
Analysis Menu. 216
Case Menu. 219
Display Menu. 220
Window Menu. 221
Help Menu. 222
Appendix A
Calculation of Form Parameters. 224
Definition and calculation of form parameters. 224
Potential for errors in hydrostatic calculations. 231
Reference Designs. 232
Reference Calculations. 233
Appendix B
Criteria file format 235
Appendix C
Reference Tables. 239
File Extension Reference Table. 240
Analysis settings reference table. 241
Index. 243