OUPV & 100-Ton Master · Credentials — Master Tonnage Tiers
A 'Master of vessels less than 100 GRT' credential is commonly issued in tonnage tiers of:
- A10, 20, and 40 GRT
- B50, 75, and 100 GRT
- C25, 50, and 100 GRT✓ Correct
- D15, 30, and 60 GRT
Explanation
The under-100-GRT Master credential is graded by the tonnage of qualifying sea service, commonly issued at 25, 50, or 100 GRT (with 200 GRT mate/master also available with the required service). Tonnage authority cannot exceed what the documented service supports.
Authority: 46 CFR Part 11
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