Rule 33 Equipment for Sound Signals

Equipment for Sound Signals — International

(a) A vessel of 12 metres or more in length shall be provided with a whistle, a vessel of 20 metres or more in length shall be provided with a bell in addition to a whistle, and a vessel of 100 metres or more in length shall, in addition, be provided with a gong, the tone and sound of which cannot be confused with that of the bell. The whistle, bell and gong shall comply with the specification in Annex III to these Regulations. The bell or gong or both may be replaced by other equipment having the same respective sound characteristics, provided that manual sounding of the prescribed signals shall always be possible.

(b) A vessel of less than 12 metres in length shall not be obliged to carry the sound signalling appliances prescribed in paragraph (a) of this Rule but if she does not, she shall be provided with some other means of making an efficient sound signal.

Equipment for Sound Signals — Canadian Modification

(c) Notwithstanding paragraph (b), in the Canadian waters of a roadstead, harbour, river, lake or inland waterway, a vessel shall carry the sound signalling appliances prescribed in paragraph (a) for a vessel of 12 metres or more in length, if it is

(i) less than 12 metres in length,

(ii) ordinarily used for the purpose of pushing or pulling any floating object, and

(iii) not employed solely in yarding or warping operations.