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Naval Architecture
Precision Engineering Calculations for Cargo Securing and Structural Compliance
Accurate calculations are the foundation of safe cargo securing and structural engineering. MEC Pacific delivers a range of specialist calculation services — from container stack weight analysis to full finite element structural assessments — providing the technical evidence required for class approval, operational planning and regulatory compliance.
Naval Architecture
Our calculation team works with current class rules, IMO guidelines and vessel-specific data to produce results that are accurate, clearly documented and ready for submission.
Stack Weight Calculations
Maximise Container Capacity — Safely and Compliantly
Stack weight calculations determine the maximum permissible weight of container stacks on deck and in hold, based on the structural capacity of the vessel's decks, hatches and lashing systems. MEC Pacific performs these calculations in accordance with applicable class rules and vessel-specific structural data, helping operators maximise cargo capacity while remaining within safe limits.
What We Offer
Stack weight analysis for on-deck and in-hold positions
Hatch cover loading capacity assessment
Integration with lashing system capacities
Bay plan optimisation support
Calculation packages suitable for class submission
Revision of existing tables for vessel modifications
Route-Specific Load Calculations
Optimised Cargo Securing Based on the Actual Trade Route
Cargo securing requirements depend significantly on the environmental conditions a vessel will encounter on its trade route. Route-specific load calculations allow operators to apply securing arrangements that are precisely calibrated to the actual sea states, wind conditions and motion characteristics of their routes — rather than conservative global worst-case assumptions.
What We Offer
Route-specific load calculations per DNV/BV/LR Lashing@Sea or equivalent
Analysis of vessel motion characteristics
Reduction factors based on actual environmental data
CSM updates to include route-specific allowances
Class approval support
FEM / FEA Calculations
Finite Element Analysis for Structural Verification and Optimisation
Finite Element Method (FEM) and Finite Element Analysis (FEA) provide detailed insight into how structures behave under load — identifying stress concentrations, deformation patterns and structural margins that cannot be evaluated by simplified analytical methods. MEC Pacific applies FEM/FEA to cargo securing structures, deck equipment foundations, lashing bridges and bespoke structural elements.
What We Offer
FEM/FEA analysis of lashing bridges, deck structures and equipment foundations
Stress and deformation analysis under static and dynamic loads
Fatigue assessment for cyclically loaded structures
Structural optimisation to reduce weight while maintaining strength
Class submission of FEM/FEA reports
