A Fast Offshore Cruiser - Appendices. A.7. - Rudder stock.

(cm) = solid stock diameter

s _c = the lesser of or minimum yield strength N/mm² (for metals)

s _c = 215 N/mm² = 21500 N/cm² for Stainless Steel 316

(Ncm) = Torque @ neck (lower) bearing

(Ncm) = Moment @ neck (lower) bearing

(N) = total force on rudder

k = 984, C = 1.5, L_WL = 14.66m, A = 0.856m²

\ N = 1.0

h_b = 192.36cm, h = 177.56cm, h_c = 76.61cm

at top bearing M = 0

at the stock tip (0.2 * rudder depth from blade tip) d_min = 0.46*d at neck bearing = 4.44cm