Rudder Area - Archer Rule

Rudder-area rule-of-thumb using Archer's formula - a function of underwater lateral area, used in early design feasibility.

RudderArcherScantling

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

A_R^{Archer} = \frac{L \cdot T}{60}

Symbol	Meaning	Unit
$L$	LBP	m
$T$	Mean draft	m

Source: DNV Pt.3 Ch.14 - Rudder Arrangements

Rudder-area rule-of-thumb using Archer's formula - a function of underwater lateral area, used in early design feasibility.