Rule 27
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Vessels not
under command display two black balls, vertically. (KNOWN
AS A BALLS UP!)
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If a vessel
not under command is not making way, it will not show side
or stern lights. (RED OVER RED-THIS SHIP IS DEAD)
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If a vessel
not under command is making way, it will show side and stern
lights. There is no indication of length, because no masthead
lights are shown.
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Vessels restricted
in ability to manoeuvre display a ball diamond ball shape.
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A vessel towing
may display a red, white, red sequence of lights to indicate
that it is restricted in ability to manoeuvre, in addition
to the lights for a vessel of it size.
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Vessels engaged
in underwater operations, where there is a hazard (such as
anchor cables or cranes) to one side, that side is marked
by two black balls. The safe side has two diamond shapes.
(Diamonds are a girl's best friend)
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At night a vessel
engaged in underwater operations, shows a red, white and red
light light in a vertical line. The safe side is indicated
by two all round green lights, the dangerous side by two all
round red lights.
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If the vessel
is making way, it will show masthead and side lights as well.
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A vessel with divers down should show an international code flag 'A'. In most cases this will be a large representation of an 'A' flag painted on plywood, this can be seen even if there is no wind. If the vessel is large enough it could also show the signals for a vessel engaged in underwater operations. |
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Minesweepers
display three black balls in a triangle shape.
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At night a minesweeper
shows three green lights in a triangle. This pattern mirrors
the day signal of three balls in a trangle.
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