A vessel towing is showing three forward white masthead ligh

A vessel is carrying three lights in a vertical line. The highest and lowest of these are red and the middle light is white. Which statement is always TRUE?

A.During the day，she would display three balls in a vertical line

B.If making way，she would show masthead lights at night

C.If at anchor，she need not show anchor lights while displaying identifying lights

D.Her fog signal would consist of a rapid ringing of a bell for five seconds every minute

A vessel towing a barge astern would show，at the stern ______.

A.only a stern light

B.a towing light above the stern light

C.two towing lights in a vertical line

D.two white lights in a vertical line

A head-on situation at night is one in which you see dead ahead a vessel showing ______.

A.one sidelight

B.one sidelight and a masthead light

C.one sidelight and two masthead lights

D.both sidelights of a vessel and her masthead light(s)

A vessel or object being towed astern shall display a(n) ______.

A.forward masthead light

B.after masthead light

C.stern light

D.All of the above

A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall，when making way，exhibit ______.

A.the masthead lights for a towing vessel

B.the lights for a vessel restricted in its ability to maneuver

C.sidelights，stern light and towing light

D.All of the above

A single vessel being towed alongside shall exhibit ______.

A.one all-round white light

B.sidelights and a stern light

C.only the outboard sidelight and a stern light

D.a masthead light，sidelights，and a stern light