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Criterion for vessels of unusual proportion and form. |

` "Criterion for vessels of unusual proportion and form" (CFR 46 170.173) proj 170173 MACRO ParB LIMIT TITLE "170.173 Paragraph b" UNIT LT LIMIT (1) GM UPRIGHT > 0.49 LIMIT (2) RA AT 30 OR MAX > 0.66 LIMIT (3) ANGLE AT MAX > 25 LIMIT (4) AREA FROM 0 TO ABS 30 > 10.3 LIMIT (5) AREA FROM 0 TO ABS 40 OR FLD > 16.9 LIMIT (6) AREA FROM ABS 30 TO ABS 40 OR FLD > 5.6 / MACRO ParC LIMIT TITLE "170.173 Paragraph c" UNIT LT LIMIT (1) GM UPRIGHT > 0.49 LIMIT (2) ANGLE AT MAX > 15 LIMIT (3) AREA FROM 0 TO ABS 40 OR FLD > 16.9 LIMIT (4) AREA FROM ABS 30 TO ABS 40 OR FLD > 5.6 LIMIT (5) AREA FROM 0 TO MAX AT 15 > 13.1 LIMIT (6) AREA FROM 0 TO MAX AT 30 > 10.3 / read sv.gf report UNIT MT crtpt "Engine Room Intake" 12.5f, 5.85, 9.5 /SYMM UNIT LT MACRO MaxVCG vcg=10 `floor maxvcg 10, 11, 12 /trim: -1, 0, 1 / .ParB .MaxVCG LIMIT OFF .ParC .MaxVCG macro d `Checks limit margins at max VCG for given LCF draft and trim. heel=0 trim=%2 draft=%1 solve weight, lcg vcg=max solve lcg vcg=max \\The following case is at trim = %2, displacement = {weight:2}\ ra /lim /notab / macro t `Covers range of drafts as in MAXVCG at given trim. .d 10 %1 .d 11 %1 .d 12 %1 / LIMIT(9) ANGLE FROM MAX TO 30 > 0 maxvcg valid page \\Checking limit margins at maximum VCG as determined by Paragraph c\ \>>> Check to make sure that limit #9 is positive for all cases <<<\ \If so, Paragraph c applies.\ `Trims as in MAXVCG: .t -1 .t 0 .t 1 report off end |

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