PIASSoftware for naval architects

sarc@sarc.nlwww.sarc.nl

20112011

What defines PIAS? • PIAS is a toolbox for Naval Architects. • PIAS is a product of SARC, by a team of experienced naval architects with hands-on experience. • PIAS is used by the vast majority of Dutch design offices and yards and many others worldwide.• PIAS calculations are accepted by all major classification societies. • PIAS calculations are presented in comprehensive reports.• PIAS is fully menu-operated, thus reducing the learning curve and errors associated with software using script programming. • PIAS modules are used beyond the scope of shipbuilding: Floating transport and submersion of motorway tunnel segments, a flood barrier and offshore constructions are but a few examples.• Continuous developments of new methods, modules and options ensure up-to-date software. • PIAS is modular: only purchase the modules as required; additional modules can be supplied instantly. • No annual license fees, free updates are issued.• PIAS can deal with: • single, composed and asymmetric hull forms, catamarans, trimarans, semi-submersibles, and odd shapes. • actual COG of fluids in tanks (for heel and trim), • loss of cargo for open hopper vessels, • loss of tank contents in damage stability calculations, • ducted and controllable pitch propellers, • (damage) stability in waves, • user- and pre-defined stability criteria, etc.

What functions are available?De�nition of hydrostatic models• Numerical or graphical input of ordinates.• Ordinates as generated from SARC’s Fairway software. • Triangulated surface models as generated from SARC’s Fairway software.

Intact stability• Stored list of loading conditions.• Graphic definition of tank filling and multiple types of cargo.• Actual and allowable grain heeling moments.• Inclining experiment calculations.• Checks of GZ curves against stability criteria.• Tables of allowable VCG’.

3D layout model.

Tank fi lling in loading conditions.

PIAS reference: Scenic Diamond, courtesy of Den Breejen Shipyard.

PIAS reference: Noorderkroon, courtesy of Bijlsma Shipyard.

Longitudinal strength

• Shear forces, bending and torsional moments.

• Defl ection and deviation.

Damage stability:

• Easy defi nition of damage cases.

• Progressive fl ooding via ‘critical points’.

• Multiple stages of fl ooding.

• Checks of GZ curves against stability criteria.

• Tables of allowable VCG’.

Stability criteria

• Input of criteria using a wide range of variables.

• Predefi ned sets of standard criteria, and the fl exibi-lity to use any combination of non-standard criteria.

• Separate sets of criteria for intact stability and fi nal or intermediate stages of fl ooding.

Probabilistic damage stability

• Automated generation of damage cases.

• Automated determination of damage boundaries.

• Automated calculation of attained index.

• Optimisation of VCG’ values to meet required index exactly.

• Multiple settings and calculation schemes to comply with any authorities’ preferences.

Tanks, compartments and layout

• Tank defi nitions relate to the defi ned hull, changes in the hull are automatically refl ected in the com-partments.

• In the fi nal phase of development: an integrated pla-ne & space modelling tool, based on a novel metho-dology. Aimed at fast design of confi guration layout, and at tight interfaces with general CAD systems.

Speed and power predictions

• Resistance predictions according to Holtrop & Mennen, Savitsky, van Oortmersen, Hollenbach and others.

• Propeller calculation and optimisation for B-series, ducted(Ka and Kd series) and controllable pitch propellers.

Fairway hull design software

• Free hand design, fairing, scaling, transformations, plate expansions, see separate brochure.

Photoship photogrammetry

• Reverse engineering of 3D (partial or complete lines plans) or 2D objects (brackets, bulkheads), for repairs,conversions or other types of engineering, seeseparate brochure.

Stability for open hopper vessels, spilling of cargo.

Lay-out module.

Maeslantkering,Storm Surge Barrier.

www.sarc.nl sarc@sarc.nl

PIAS reference: LPD Hr.Ms. Rotterdam, courtesy of Royal Dutch Navy.

2011