PUBLIC LAW 96-591—DEC. 24, 1980
94 STAT. 3429
(iii) when at anchor, in addition to the hghts prescribed in subparagraph (i), the anchor light, lights, or shape prescribed in Rule 30 for anchored vessels, (b) A pilot vessel when not engaged on pilotage duty shall exhibit the lights or shapes prescribed for a vessel of her length. RULE 30
Anchored Vessels and Vessels Aground (a) A vessel at anchor shall exhibit where it can best be seen: 33 USC 2030. (i) in the fore part, an all-round white light or one ball; and (ii) at or near the stern and at a lower level than the light prescribed in subparagraph (i), an all-round white light. (b) A vessel of less than 50 meters in length may exhibit an allround white light where it can best be seen instead of the lights prescribed in paragraph (a) of this Rule. (c) A vessel at anchor may, and a vessel of 100 meters or more in length shall, also use the available working or equivalent lights to illuminate her decks. (d) A vessel aground shall exhibit the lights prescribed in paragraph (a) or (b) of this Rule and in addition, if practicable, where they can best be seen: (i) two all-round red lights in a vertical line; and (ii) three balls in a vertical line. (e) A vessel of less than 7 meters in length, when at anchor, not in or near a narrow channel, fairway, anchorage, or where other vessels normally navigate, shall not be required to exhibit the lights or shape prescribed in paragraphs (a) and (b) of this Rule, (f) A vessel of less than 12 meters in length when aground shall not be required to exhibit the lights or shapes prescribed in subparagraphs (d)(i) and (ii) of this Rule. (g) A vessel of less than 20 meters in length, when at anchor in a special anchorage area designated by the Secretary, shall not be required to exhibit the anchor lights and shapes required by this Rule. RULE 31
Seaplanes Where it is impracticable for a seaplane to exhibit lights and ^^ USC 2031. shapes of the characteristics or in the positions prescribed in the Rules of this Part she shall exhibit lights and shapes as closely similar in characteristics and position as is possible. PART D—SOUND AND LIGHT SIGNALS RULE 32
Definitions (a) The word "whistle" means any sound signaling appliance ^3 USC 2032. capable of producing the prescribed blasts and which complies with specifications in Annex III to these Rules. (b) The term "short blast" means a blast of about 1 second's duration.
79-194
0-81-pt. 3
50: QL3
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