242 NICEOLLS'S SEAMANSHIP AND NAUTICAL KNOWLEDGE

By Day.—The characteristic topmark will be struck if practicable.
Two large black globes or shapes will be exhibited one forward and one
aft. The International Code Signal "P.C." will be flown.

By Night —Two red lights will be exhibited one forward and one aft.
Two flares, one red and the other white, will be shown simultaneously
at least every quarter of an hour or if the use of flares be impracticable a
red light and a white light will be displayed simultaneously.

Watch buoys are can buoys painted red, with "Watch" preceded
by lightvessel's name in white letters. They are moored near
the vessel to mark position.
If from any cause the lightvessel be unable to exhibit her usual

lights whilst at her station, the riding light only will be shown.
The mouths of fog horns, which are not fitted to distribute the sound

equally all round, are pointed to windward. ^
At lightvessels where a hand horn is used, the intervals will be
shortened as vessels approach, and should a vessel come danger-
ously close the sound will be continuous until she has passed.
When, from any of the lightvessels or from Trinity House Light-
house a vessel is seen standing into danger, the two signal flags
J D of the International Code, "You are standing into danger,"
will be hoisted and kept flying until answered. In addition to
the above flag signal the lightvessel will fire a gun or socket
signal, and repeat it at short intervals until observed by the

It should be remembered that lightvessels are liable to be with-
drawn for repairs, without notice, and in some cases not replaced
by relief vessels.
COLLISIONS WITH LIGHTVESSELS.
Caution.—In consequence of lightvessels being from time to time
run into and seriously damaged by vessels navigating in their vicinity,
the Corporation of Trinity House deem it desirable to warn mariners
that when passing a lightvessel, and particularly when attempting to
cross her bows, they should make due allowance for the set of the tide
and take every other precaution desirable in the circumstances in order
to avoid striking the lightvessel. Attention is specially directed to the
666th section of the Merchant Shipping Act, 1894, which provides that
anybody wilfully or negligently running foul of any lightvessel or buoy
shall, in addition to the expense of making good any damage so
occasioned, incur a penalty of £50.