Towing & Ship-Assist · Stability — Downflooding Angle
A towing vessel's vulnerability to girting-induced capsize is worsened by a low:
- AFuel price
- BDownflooding angle — the heel at which water enters through openings such as engine-room vents or doors✓ Correct
- CRadar range
- DCrew count
Explanation
If a tug heels far enough that downflooding openings (vents, doors, hatches) submerge, water enters and capsize follows quickly. A higher downflooding angle and weathertight closures improve survivability if the tug is girted; keeping such openings closed at sea is essential.
Authority: Stability references; Subchapter M stability
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