Offshore Platform Wave Air Gap Calculator

MetOcean & Structural Safety: Calculate net air gap clearance under 100-year extreme crest elevation ($\eta_{max}$), storm surge, and wave run-up.

Bottom of Steel Deck $Z_{deck}$ (m MSL):

100-Yr Sig Wave Height $H_s$ (m):

Highest Astronomical Tide (HAT, m):

100-Yr Storm Surge (m):

Monopile / Column Dia $D$ (m):

DNV Air Gap Requirement (m):

Net Air Gap

-- m

Peak Water Elevation

-- m

100-Yr Crest ($eta_{max}$)

-- m

Wave Run-up ($Delta h$)

-- m

• Extreme Wave Height ($H_{max} \approx 1.86 H_s$): -- m

• Still Water Level ($SWL = HAT + Surge$): -- m MSL

• Clearance Margin over DNV Requirement: -- m

• Deck Wave Slamming Risk: --

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