Implementation a vessel restricted in her ability to manouevre

A VESSEL RESTRICTED IN HER ABILITY TO MANEUVER:
A vessel restricted in her ability to maneuver shall exhibit:
– Three all-round lights in a vertical line where they can best be seen. The highest and lowest of these lights shall be red and the middle light shall be white.
– By day, three shapes in a vertical line where they can best be seen. The highest and lowest of these shapes shall be balls and the middle one a diamond.
– When making way through the water, in addition a masthead light or lights, – Sidelights, and
– A sternlight.
A vessel engaged in dredging or underwater operatiin her ability to maneuver, shall exhibit the above lights and shapes. When an obstruction exists, in addition, shall exhibit:
– Two all-round red lights and by day two balls in a vertical line to indicate the side on which the obstruction exists.
– Two all-round green lights and by day two diamonds in a vertical line to indicate the side on which another vessel may pass.