GHS軟體模組

Ship Stability Software Products

• Packages
• GHS General HydroStatics - the Naval Architect's favorite
• GHS/Salvage GHS plus CG, LS and MB modules
• BHS Basic HydroStatics - a medium-priced package based on GHS
• GHS Load Monitor (GLM) onboard trim, stability and strength
• GLM Configurer GHS plus LEw and CG modules
• Optional Modules - require BHS or GHS, and as noted
• AF Advanced Features - requires GHS
• CG Condition Graphics
• CR Crane - requires GHS, CG & LEw
• FL Floodable Lengths
• GHSCOM GHS Communications - requires GHS
• GS Grain Shift
• HM Hull Maker
• LE Load Editor
• LEw Load Editor with windows
• LS Longitudinal Strength
• MB Multi-Body - requires GHS
• MC Model Converter - included with GHS, optional with BHS
• NET Network licensing - Central server - LAN functionality
• NETPlus Network licensing - Roaming ability
• PI Programming Interface - requires GHS
• SASM Shape Assembler
• SI Sensor Interface - requires GHS
• SK SeaKeeping - requires GHS
• TS Tank Soundings

GHS軟體功能

GHS Features Summary

• Scope of Application
• General Hydrostatics/stability/strength -- applies to all ships of any size, type and any floating structure
• Vessel design -- easy model building and modification; simulation-oriented calculations
• Trim and Stability book preparation -- all required calculations and graphs
• Onboard Loading Computer -- customized and packaged to support on-board vessel operations; configurable by GHS user
• Drilling unit stability -- rig wizard for finding critical axis, automated max VCG intact and damaged
• Hopper dredge stability -- mud lag and water-over-cargo
• Salvage applications -- accurate simulation with grounding, pulling, pressurized tanks; multiple bodies
• Oil-spill calculations -- amount of oil spilled based on observed condition of vessel
• Tonnage -- Component volume reports for International Tonnage
• Launching calculations -- ship interaction with ways and water, automated sequencing of launching steps through the macro command language
• Grain loading -- treats grain shift either in specially-constructed bulk holds or general cargo holds
• Drydocking calculations -- easily-combined ship and dock geometry; graving dock grounding, block crushing force; multi-body application
• Submarines -- critical GM vs tank load (optional AF module); resolving load imbalances
• General-purpose task automation -- many file and text processing operations can be automated using GHS -- this html page is GHS output!

Geometric Modeling Tools

• Hull modeling tools -- digitizing and offset input/editing
• Tank modeling -- parametric - powerful and efficient
• Complex models -- multi-level geometry structure facilitates complex modeling
• Model detailing support -- deck camber, shell thickness, appendages, deductions, sounding tubes, etc.
• Deck edge and margin definition -- automatic and editable deck edge; linear or parabolic margin distances
• Wind drag details -- shape and effectiveness coefficients at component level
• Import/export -- several formats supported: DXF, IDF, SHCP, etc.
• Geometry viewing and editing -- various views, complete detail

Calculating Essentials

• Standard curves -- curves of hydrostatic properties, cross curves, righting-arm curves, max VCG curves, etc.
• Load condition reports -- flexible status reports displaying all information at various levels
• Condition Graphics -- flexible plan, profile, body views showing current loads and waterplanes (optional CG module)
• Free surface treatment -- actual CG shifts or free surface moments (FSM)
• Free surface moments -- True, maximum or user-specified; also FSM floors
• Deflection -- hog and sag derived from given drafts; or bending analysis (with optional LS module)
• Inclining -- complete displacement and CG calculation from inclining data; inclining wizard
• Intact stability -- righting arm curves for load cases
• Damage stability -- lost buoyancy -- otherwise same as intact
• Probabilistic damage -- Several versions including latest cargo and passenger rules with user-supplied PS methods (optional AF module)
• Stability criteria -- flexible and comprehensive
• Roll angles -- direct input or by IMO formula
• Critical points -- flooding and weathertight, one side or symmetrical
• Freeboard -- minimum distance to deck edge with and without margin
• Lateral plane and Wind plane -- heeling moment derivations
• Heeling moments, wind -- wind forces derived from geometry -- lateral plane or projection in any direction (respecting heel, trim draft and axis)
• Heeling moments, tank -- simulating water on deck, grain shift
• Heeling moments, other -- from turning, CG shift, direct input
• Water on deck -- several methods address various regulations
• Waves -- several types, adjustable height, length, phase and encounter
• Maximum VCG -- curves or individual condition; also import of Max VCG/min GM
• Intermediate flooding -- Support for flooding in stages using added weight in tanks
• Grounding -- Up to 400 ground points allowing detailed ground models
• Adjustable heeling axis -- supports finding most critical axis of drilling units
• Floodable lengths -- Compartment lengths limited by margin line or GM (optional FL module)
• Longitudinal Strength -- shear, bending moment, deflection, torque (optional LS module)
• Tank characteristics -- Tables and plots of tank properties
• Tank Soundings -- several flexible formats - soundings, ullages (optional TS module)

Special Calculations

• Variable axis mode -- RA curves and max VCG with variable axis for structures without a definite critical axis.
• Grain loading -- using girder depth and distance
• Grain Shifting -- volumetric heeling moments from complex grain shift (optional GS module)
• Damage control -- simulation of effects of counter flooding, etc.
• Multi-body interactions -- several floating bodies with points of interaction, latched or free to lift off (optional MB module)
• Multiple tank modes -- intact, flooding, spilling, damaged, bubble, WDF, deck water, frozen
• Tank calibration -- using tank property tables from an external source
• Tank gauging -- interface to tank instrumentation - several protocols available
• Expansion of oil -- volume expansion due to temperature changes
• API petroleum density -- density via API degrees and temperature - gross and net volumes
• Trimming moment -- direct input, various functions
• Thruster simulation -- side thrusts contributing to heeling moments and weight/buoyancy forces
• Pull simulation -- arbitrary force in any direction contributes to heeling and trimming moments as well as weight/buoyancy forces

Input Faculties

• Command language -- powerful, efficient macro language
• User variables -- allowing complete control of run and special calculations
• Templates -- user-programmable dialog boxes and wizards
• Load Editor -- interactive tank and nonliquid load changing with graphical displays
• Project system -- project folder management

Output - Reporting

• Flexibility -- user-controlled report sequences and variations
• Annotation -- includes user-formatted calculations and reports
• Optional styles -- plain and fancy
• Graphs in reports -- automatic graph generation
• User-designed graphs -- plotting curves from any data -- unlimited possibilities
• Report preview -- on-screen preview of report with graphs
• Report exporting -- copy-and-paste text and graphs, PDF-Machine compatible
• Report sharing -- GHS reports with graphics can be viewed and printed from any computer using the free GHSPublicPrint.exe program

Support

• Documentation -- complete, accurate, usable - printed and on screen
• Support -- fast and knowledgeable
• Training -- Available as needed
• Recognition -- widely accepted; excellent reputation for accuracy
• Endorsement -- ABS, Lloyds, DNV and others
• Programming Interface -- Allows user-developed plug-ins (optional PI module)
• GHSCOM -- allows any program using Microsoft COM technology to interact with the GHS engine (optional GHSCOM module)
• Operating system -- Windows, any recent version; Apple adaptation; versions for older OS available
• Security -- USB, parallel-port and server dongles
• Companion software -- midship section calculator by VSW
• CAD direct to GHS -- Rhino exporter to GHS Geometry