27. A vessel is showing three lights in a vertical line, upper and
lower red and the middle one white, she also shows two white mast
lights, side lights and stern lights. Which of the following answers
best describes this vessel?
(A) A vessel restricted in her ability to manoeuvre, underway and
making way through the water.
(B) A vessel restricted in her ability to manoeuvre, underway but
unknown if making way through the water or not.
(C) A vessel not under command and still moving through the water.
(D) A vessel engaged in dredging, underway but making no way
through the water.