Towing & Ship-Assist · Stability — Free Surface
Why is maintaining reserve stability especially important on a towing vessel during assist work?
- ATugs never capsize
- BStability has no effect on towing
- CA transverse towline load (girting) combined with reduced stability can capsize the tug very quickly✓ Correct
- DOnly cargo ships need stability
Explanation
Tugs operate with large transverse forces close to the waterline. Reduced stability (slack tanks/free surface, added topside weight, downflooding points) lowers the heeling angle at which a girting load capsizes the tug.
Authority: Towing safety guidance; stability principles
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