A_d is the design area, in square metres,

=(l・b )・10^-6m² . For plating it is the actual area of the particular shell panel, but shall not be taken more than 2・(lO^-3 ・ b)², in square metres

where

l is the longer dimension of the plate in millimetres,

b is the shorter dimension of the plate in millimetres,

　

Ar is the reference area

= 0.36・A_wp, in metres

= 0.3・L_wl・B_wl, in square metres, where the waterplane area, A_wp, in square metres is not known

　

A.2 Motor craft side design pressure p_s

　

where

P_r is the applicable design pressure, KN/M²

σ_a see table 3

b　is the shorter dimension of plate panel,in metres

　

(where)

(E_r is the flexural modus, N/mm²)

(k₁ is the coefficient for allowable deflection as given (see 6.2, Table 5).)

^★★Bending stiffness criterion may be unnecessary for the simplified method.

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