Rules of the Road · Sound Equipment
Which vessel length threshold triggers the requirement to carry a gong in addition to a whistle and bell under Rule 33?
- A20 meters or more
- B50 meters or more
- C75 meters or more
- D100 meters or more✓ Correct
Explanation
Rule 33(a) requires a vessel 100 meters or more in length to carry a whistle, a bell, AND a gong. Vessels between 12 and 100 meters need only a whistle and bell. The gong is used to supplement the bell at anchor for vessels 100 m or more.
Authority: 72 COLREGS Rule 33(a)
Practice the full Rules of the Road bank
Free spaced-repetition quizzing across 2190 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related Rules of the Road questions
- Sound Equipment
Under the COLREGS, what is the duration of a 'short blast' on a sound signal appliance?
- Sound Equipment
A 'prolonged blast' as defined in Rule 32 lasts approximately how long?
- Sound Equipment
A vessel 75 meters in length is required to carry which sound signal appliances under Rule 33?
- Sound Equipment
Under Rule 33, a vessel under 12 meters in length is required to carry which sound signal equipment?
- Sound Equipment
Annex III of the COLREGS governs technical details of sound signal appliances. According to that annex, what determines the required frequency and audibility range of a vessel's whistle?
- General & Definitions
72 COLREGS apply to vessels upon which waters?