Power prediction methods taking into account trim

[nick_m]

hello everyone

I am looking for power prediction methods such as Holtrop-1984, which taking
into account trim, however i dont know how sensitive Holtrop-1984 method is to trim changes, what i am looking for is how the trim affect resistance (i.e effective power). however i can not use model tests neither CFD progs. Any suggestions ???

Many thanks

[Perm Stress]

Do you mean static or dynamic trim?

If static, just enter the data of hull in trimmed condition you are interested in.
If dynamic -Holtrop method do not run to so high speeds, where dynamic trim can drastically change hull characteristics.