A crew member joins a vessel that is a sister ship to one on which the crew member recently completed firefighting proficiency training. Under 46 CFR §185.420, how is this prior training treated?

1. A. It has no applicability; all training must be repeated from the beginning on the new vessel
2. B. It satisfies only the initial training requirement but not the monthly or quarterly requirements
3. ✓ It may be considered equivalent to the initial, monthly, and quarterly training requirementsCorrect
4. D. It satisfies only the quarterly requirement but not the initial or monthly requirements