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 Finds required GM according to 46 CFR 170.170. Assumes that the wind plane is geometrically modeled. ````Finds required GM according to 46 CFR 170.170. `Assumes that the wind plane is geometrically modeled. `Works with GHS and BHS. project REQGM170 run C170170.LIB /CALL READ FVW.GF `Mark the deck edge: enter pm modify hull margin 0 / comment Fishing Vessel with deck edge marked, zero margin write FVWDK0.GF quit pm report /box:bw comments \\\\\\\\\Required GM According to CFR 170.170\ `Parameters for using c170170.lib: set bo4=0, aob=0 `Use zero for no added freeboard set true = 1 `Use 0 to approximate half-freeboard tangent as hf / beam `Use 1 to find true half-freeboard angle set p = 0.005 `wind pressure set tfb = 12.25 `Half breadth `ReqGM assumptions for draft series below: ` - zero heel ` - tank empty and set to type intact ` - weight, lcg, and tcg set to achieve equilibrium at the specified draft and trim ` - nominal VCG set equal to LCF draft subtitle Series of Drafts at zero trim\ page set di = 1 `draft increment set d = 6 `initial LCF draft .REQGM (4) 0 `(number of drafts) trim .REQTAB `If you want a summary table at the end subtitle Series of Drafts at 1 degree aft trim\ page set d = 6 .REQGM (4) 1 .REQTAB `If you want a summary table at the end subtitle Specific load conditions\ macro calc page solve status ghs wind (pressure) = {p} heel 0 solve trim hmmt wind hmmt report .170_170 / weight 117.37, 4.10f, 0, 11.00 `Light ship .calc load (wt*, db*) 0.98 load (hold2.c) 0.2 add "Crew and effects" 1.0, 30.0f, 0, 15.0 .calc set mx_didr= 1 `indicates draft mode set mx_drn = 3 `number of drafts set mx_dr1 = 5 `initial draft set mx_dri = 0.5 ` draft increment set mx_trn = 1 ` number of trims set mx_tr1 = 0 ` initial trim set mx_tri = 1 ` trim increment (degrees) subtitle Max VCG\ page .170170m print preview report off end ``` Add a free link to your site