3. 擱淺的船舶於日間，除應顯示錨泊號標外，並在最易見處，加置何種號標於一垂直線上？
(A) 球形號標一個
(B) 球形號標三個
(C) 菱形號標一個
(D) 菱形號標二個

國際海上避碰規則第三十條

錨泊：船舶前部一盞環照白燈或一個球型號標；船尾或接近船尾加掛低於船頭的一盞還照白燈

擱淺：顯示錨泊燈外，加掛兩盞換照紅燈於一垂直線上三個球體於一垂直線上

ㅤㅤ

附註：

長度未滿５０米可以一盞環照白燈取代錨泊燈

長度未滿７米，不在狹水道、航道、錨地或其他船舶通常航行的水域中或其附近錨泊時，不要求顯示錨泊燈或號標

Rule 30
Anchored vessels and vessels aground
(a). A vessel at anchor shall exhibit where it can best be seen:
(i). in the fore part, an all-round white light or one ball;
(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 metres in length may exhibit an all-round 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 metres and 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, where they can best be seen:
(i). two all-round red lights in a vertical line;
(ii). three balls in a vertical line.
(e). A vessel of less than 7 metres in length, when at anchor, not in or near a narrow channel, fairway or 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 metres in length, when aground, shall not be required to exhibit the lights or shapes
prescribed in subparagraphs (d)(i) and (ii) of this Rule.