Offshore Structural Engineering

🌊 Offshore Structural Engineering Tools

Professional calculators for jacket platforms, pile design, wave loads, cathodic protection & more. Free, browser-based, no signup.

Disclaimer: These tools are for preliminary estimation only. Always verify results with qualified engineers and relevant design codes (API RP 2A-WSD, ISO 19902, DNV-ST-0126). Do not use for final design without independent verification.

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Morison Wave Force Calculator

Drag + Inertia forces on cylindrical members

Cylinder Diameter D (m)

Water Depth d (m)

Wave Height H (m)

Wave Period T (s)

Drag Coeff Cd

Inertia Coeff Cm

Wave Length L (m)—

Max Drag Force Fd (kN/m)—

Max Inertia Force Fi (kN/m)—

Total Force per metre (kN/m)—

Total Force on depth d (kN)—

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Jacket Pile Size Estimator

Preliminary pile diameter & wall thickness

Water Depth (m)

Total Deck Load (tonnes)

Environmental Zone

Number of Piles

Recommended Pile OD (mm)—

Wall Thickness (mm)—

Recommended Steel Grade—

Est. Axial Load per Pile (kN)—

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API RP 2A Pile Axial Capacity

Skin friction + tip resistance

Pile Diameter (m)

Embedment Depth (m)

Soil Type

Unit Weight γ (kN/m³)

Friction Angle φ (°)

Skin Friction Qs (kN)—

Tip Resistance Qt (kN)—

Total Capacity Qu (kN)—

Allowable Load (FOS=2.0)—

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Offshore Steel Member Weight

Pipe, I-beam, box section weights

Member Type

Outer Diameter OD (mm)

Wall Thickness t (mm)

Member Length (m)

Cross-sectional Area (cm²)—

Weight per metre (kg/m)—

Total Weight (kg)—

Total Weight (tonnes)—

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Cathodic Protection Anode Calc

Sacrificial anode weight & quantity

Structure Surface Area (m²)

Design Life (years)

Current Density (mA/m²)

Anode Utilization Factor

Anode Type

Standard Anode Net Weight (kg)

Total Current Required (A)—

Total Ah Required—

Net Anode Weight Required (kg)—

Number of Standard Anodes—

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Wind Load Calculator

Wind force on offshore topsides & decks

Design Wind Speed V (m/s, 1-hr mean)

Projected Area A (m²)

Shape / Drag Factor Cs

Height Factor Ch (based on elevation)

Dynamic Pressure q (Pa)—

Wind Force Fw (kN)—

Wind Pressure (kPa)—

📚 Learn the Theory Behind These Tools

Read our in-depth articles on jacket platform design, pile foundation engineering, and wave load analysis.

Read the Blog →

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Educational use only. All tools and course content on SmartUtilz are for informational and study purposes. Results must be independently verified by a qualified engineer before use in any design or safety-critical application. Read full disclaimer →