Scantlings

Dimensions (thickness, depth, spacing) of structural members — plating, frames, stiffeners, girders — set by class rules.

Regulatory detail & full definition

Driven by IACS Common Structural Rules (CSR) for bulkers and tankers; class-specific rules elsewhere. Net scantling approach deducts a corrosion margin from the as-built thickness so the vessel meets minimums even after wastage.