A Fast Offshore Cruiser - Appendices. C.2. - Spars.

Mast section calculations.

Euler critical load.

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P_e = 79.49kN, L = 7.05m,

Aluminium spar E = 69GPa, FOS = 3

for panel 1 (p1)

This value requires the Seldon mast E-section of the following dimensions: -

321*171mm, I_y = 5822cm³, I_x = 2038cm³, 12.84kg/m

Boom section modulus (NBS).

RM = righting moment, HA = heeling arm, E = foot length, d = distance from goose neck to kicking strap fitting on boom

This value requires the Selden boom of the following dimensions: -

OD=300*155m, t = 4mm, 10.50kg/m