Vessel Parameters

Loaded Weight (kg)

Total weight of the vessel including cargo, fuel, crew, and equipment.

Waterline Length (m)

Length of the vessel measured along the waterline.

Chine Beam (m)

Determine according to ISO 12215-5, Fig 1 and Table 7 at 0.4L_WL from aft end.

Deadrise Angle (deg)

Determine according to ISO 12215-5, Fig 1 and Table 7 at 0.4L_WL from aft end, taken as 10≤Deadrise Angle≤30

Speed (kn)

Draft (m)

Vertical distance between the waterline and the lowest point of the hull.

Design Category

A – Ocean: significant wave height above 4 m, wind force above Beaufort 8.

B – Offshore: up to 4 m waves, Beaufort 8.

C – Inshore: up to 2 m waves, Beaufort 6.

D – Sheltered waters: up to 0.3 m significant wave height (with occasional 0.5 m waves), Beaufort 4.

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Save and manage multiple vessel parameter profiles

The Pressure calculation is only valid for bottom panels of motor yachts whose maximum speed in flat water and in loaded weight condition, is such that V ≥ 5√L_WL.

Panel Parameters

X/L_WL Ratio

This ratio is a nondimensional factor, where x is the distance from the aft end of the waterline to the panel centroid, and L_WL is the design waterline length.

Enter comma-separated X/L_WL ratios for each panel

Length (mm)

Enter comma-separated lengths for each panel

Breadth (mm)

Enter comma-separated breadths for each panel

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Panel Parameters

Pressure (kN/m²)

Panel Length (mm)

Panel Breadth (mm)

Number of Plies

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Note: The Laminate Analysis is only valid where rectangular panel is fully fixed at 4 edges.
Refer to ISO 12215-5:2019 Annex A. Table A.4

Laminate Configuration

Ply #	Ply Type	Areal Weight (kg/m²)	Fiber Mass Fraction

Pressure Calculation Results

Panel	Length (mm)	Breadth (mm)	Pressure (kN/m²)	Design Shear Force (N/mm)	Design Bending Moment (N·mm/mm)

Pressure Distribution

Shear Force Distribution

Bending Moment Distribution

Laminate Analysis Results
Table Value Definitions:

σ_ut: Ultimate stress (Tension)
σ_uc: Ultimate stress (Compression)
σ_uf: Ultimate Flexural stress
σ_d: Design Flexural stress
τ_int: Ultimate interlaminar shear stress
τ_d: Design interlaminar shear stress

SMi: Section Modulus
Mt: Actual Bending Moment
Stress_fi: Stress per ply
Strain_i: Strain per ply

Updated Lamination Table with Design Stress Properties

Ply Number	Ply Name	wf (kg/m²)	Total Weight (kg/m²)	Fiber Vol Frac	Fiber Mass Frac	E Value (N/mm²)	σ_ut (MPa)	σ_uc (MPa)	σ_uf (MPa)	σ_d (MPa)	τ_int (MPa)	τ_d (MPa)	Thickness (mm)	SMi (mm³/mm)	Mt (N·mm/mm)	Strain_i (%)	Stress_fi (MPa)	Cf_m	Shear Flow (N/mm)	Shear Stress Actual (MPa)	cf_T

Composite Panel Evaluator

System Status: Checking...

Vessel Parameters

Panel Parameters

Panel Parameters

Laminate Configuration

Pressure Calculation Results

Pressure Distribution

Shear Force Distribution

Bending Moment Distribution

Safety Factors Analysis

Updated Lamination Table with Design Stress Properties

Composite Panel Evaluator

System Status: Checking...

Vessel Parameters

Panel Parameters

Panel Parameters

Laminate Configuration

Pressure Calculation Results

Pressure Distribution

Shear Force Distribution

Bending Moment Distribution

Safety Factors Analysis

Updated Lamination Table with Design Stress Properties

Analysis Archive

Panel Suggestion

High Pressure Panel Detected