Pop Alu 28

STIX:

European Union Stability Index

According to the stability index adopted by the European Union ( STIX),  which evaluates the seaworthiness of mono-hulls, the Pop Alu 28 belongs to category A, which means that it is adequate for offshore passages in accordance with the specifications below:

Design Category A ~ 'OFFSHORE'
Designed to operate in winds of Beaufort force 10 or less and the associated wave heights. Such conditions may be encountered on extended voyages, for example across oceans, or inshore when unsheltered from the wind and waves. Winds are assumed to gust to 28 m/s.

It is important to state that most production yachts of her size aren't capable to comply with this category. Next we show a summary of the calculation and the STIX number for the Pop Alu 28.

STIX Pop Alu 28 = 32.7 – Categoria A

Pop Alu 28 Stix = 32.7
Base Lengh Factor: Inversion Recovery Factor:
Lbs = 8.10 F4 = 1.16
Displacement-Length Factor: FIR = 1.16
FI = 0.94 Dinamic Stability Factor:
F1 = 0.97 Agz = 47.42
FDL = 0.97 F5 = 1.03
Beam-Displacement Factor: FDS = 1.03
Fb = 2.15 Wind Moment Factor:
F2 = 1.00 Vaw = N.A.
FDB =1.00 F6 = 1.00
Knockdown Recovery Factor: FWM = 1.00
Fr = 3.23 Downflooding Factor:
F3 = 1.16 F7 = 1.29
FKR = 1.16 FDF = 1.25