Help on lug design requirement

[Losty]

Does anyone know that this design requirement means for a lug on winch for off-shore application?

Lugs designed to be suitable for 40 degree list minimum and an offshore heave acceleration of 2G.

Could anyone please specify any standard that explains the above requirements in detail.

Thanks,

Losty

 

[boo1]

Analysis or actual max working stresses must be determined based upon working conditions including impact or other factors pertinent to the application. Actual max working stress must be equal to or less than the allowable stress.

I would consider using ASME B30.20a-2001 Structural and Mechanical Lifting devices as a start.
main section Requires sf=3
padeye Requires sf=5

ASME B30.20-2003 20-1.2.2
"The load-bearing structure components of a lifter shall be designed to withstand the stresses imposed by its rated load plus the weight of the lifter, with a minimum design factor of three, based on yield strength of the material, and the stress ranges that do not exceed the values given in ANSI/AWS D14.1 for the applicable condition. ...."