Marine Stability Criteria: USCG_46CFR
Marine intact and damage stability regulatory criteria from IMO, SOLAS, USCG, ABS, DNV, and ISO standards. Covers GZ righting arm areas, GM minimums, vanishing stability angles, weather criterion area ratios, and maximum heel angles for passenger ships, cargo ships, tankers, fishing vessels, offshore platforms, sailing yachts, and small craft in intact, one-compartment damage, and two-compartment damage conditions.
| criteria source | sk | condition | notes | parameter | required unit | required value (varies) | vessel type |
|---|---|---|---|---|---|---|---|
| USCG_46CFR | cargo_ship#GZ_area_0_to_30#intact | intact | Cargo ships documented under US flag on international voyages comply with SOLAS/IMO A.749 criteria per 46 CFR Subchapter F. | GZ_area_0_to_30 | m·rad | 0.055 | cargo_ship |
| USCG_46CFR | fishing#GM_minimum#intact | intact | 46 CFR Part 28 commercial fishing vessel minimum GM = 0.350 m for vessels ≥ 79 ft; conservative value reflecting working vessel risk. | GM_minimum | m | 0.35 | fishing |
| USCG_46CFR | fishing#GZ_area_0_to_40#intact | intact | 46 CFR Part 28 commercial fishing vessel stability criteria: righting energy (GZ area) ≥ 0.065 m·rad to downflooding. Slightly relaxed from IMO general. | GZ_area_0_to_40 | m·rad | 0.065 | fishing |
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