GHS
GHS (General Hydrostatics)
GHS 是一個用于設計和評估所有類型船舶和浮動結構的軟體系統。 它透過使用船舶的數學及幾何模型計算所涉及的力來解決漂浮、縱傾、穩定性和強度問題。
由 Creative Systems, Inc. 專門為當今的電腦開發，已被廣泛認為是同類中最高效的工具。 它不斷擴展和改進，以確保其持續的領導地位和卓越性，以應對日益復雜的穩定性標準和計算技術。 GHS 經過充分驗證、可靠，受到監管機構的尊重，并被主要設計公司和造船廠持續使用。
GHS 是真正的通用型。 它不僅可以處理船體，還可以處理任何漂浮或含有液體的物體或兩者兼有之。 它已被用于分析和/或設計潛艇、SWATH、干船塢、鉆井平臺、10 英尺帆船、300 公尺貨輪、浮橋，甚至浮動高爾夫球場。 GHS 解決簡單且復雜的穩定性問題，包括洪水的中間階段、貨物溢出以及針對復雜的穩定性標準進行最佳化。
What makes GHS special?
Of the several ship stability programs available that all claim to do most of the same calculations - some costing more than GHS and some less, what makes GHS special and worth its price? Part of the answer lies in the completeness of its features, some of which are only found in high-end programs and some only in GHS; for example,
- Handling of complex stability criteria.
- True CG shifts of tank contents both transversely and longitudinally for better realism and accuracy.
- Tank modes for flooding, damage, spilling, water-on-deck and many others.
- Heeling about any axis (essential for some shapes - drilling units for example - and where longitudinal stability is a problem).
- Wind heeling moments derived from the geometry at any heel, trim and axis angle.
- Ease of modeling complex structures and interior spaces.
- Detailed and flexible graphics depicting conditions of flotation, flooding and tank loading.
- Ground modeling for vessels partly or totally supported by the ground.
- Multi-body capability for interactions between vessels.
Calculating Essentials
- Probabilistic damage -- Several versions including latest cargo and passenger rules with user-supplied PS methods (optional AF module)
- 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
- 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)
