Rules of the Road · General & Definitions
Under 72 COLREGS, a vessel 'constrained by her draft' is one that:
- AHas less than 1 meter of underkeel clearance
- BBecause of her draft in relation to available depth and width of navigable water, is severely restricted in her ability to deviate from the course she is following✓ Correct
- CIs drawing more than 10 meters and navigating in any channel
- DIs drawing more than half the charted depth of the channel she is navigating
Explanation
Rule 3(h) gives a functional definition: the vessel's draft relative to the available navigable water leaves her severely restricted in ability to deviate from her course. No specific depth or draft number is prescribed — it is a situational judgment based on the specific waters.
Authority: 72 COLREGS Rule 3(h)
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