USCG Exam PracticeWatch duties, terminology, and instrumentation
During pre-departure engine checks on a small commercial vessel, what is the expected charge gauge reading at idle that indicates the charging system is functioning correctly?
- A. 11.5–12.5 V
- B. 12.5–13.0 V
- ✓ 13.5–14 VCorrect
- D. 14.5–15.5 V
Why C is correct
USCG Boatswain Manual Ch. 9 §9.2 specifies that a charge gauge reading of 13.5–14 V at idle is one of the standard pre-departure checks confirming the charging system is operating correctly.