552 ETCHOLLS'S SEAMANSHIP AND NAUTICAL KNOWLEDGE
until the vessel has boen visited by the Port Medical Officer. The Master
should therefore:—
(1) Send a wireless message to the Port Local Authority stating the
name of his vessel and the tune when the ship is expected to arrive. This
message must be sent off not more than twelve hours and not less than
four hours before the arrival of the ship.
(2) If the ship is not fitted with wireless, notify the Port Sanitary
Authority of the arrival of the ship as soon as possible.
ARTICLE 9 AND THIRD SCHEDULE (USE OF FLAGS AND SIGNALS).—The
Master should hoist whichever of the Quarantine Signals is appropriate, as set
out in page 356 of the British Edition of the 1931 International Code of Signals
for Visual Signalling, in accordance with Part II. of the Third Schedulo, as
follows:—
" (a) By Day, during the whole time between sunrise and sunset, when the
ship is within three miles of the coast or is within the limits of
the district—
(i.) the Flag Signal Q, meaning—* My ship is healthy, and
I request free pratique ';
(ii.) the Two-Flag Signal QQ, meaning—* My ship is
suspect, that is to say, I have had a case or cases of
infectious disease more than five days ago, or there is
an unusual mortality among rats on board'; or
(iii.) the Two-Flag Signal QL, meaning—* My ship is
infected, that is to say, I have had a case or cases of
infectious disease less than five days ago.'
The day signal shall be shown at the masthead, or where it can
best be seen.
" (6) By Night, during the whole of time between sunset and sunrise,
but only when the ship is within the limits of the district, a
signal comprising a red light over a white light, the lights being
not more than six feet apart and meaning * I have not free
* pratique.'
The night signal shall be shown at the peak or other conspicuous
place where it can best be seen."
ARTICLE 19 (DERATISATION AND DERATJSATION EXEMPTION CERTIFICATES.
Under Article 19, when a ship arrives from a foreign port, the ship's Deratisation
Certificate or Deratisation Exemption Certificate must be produced for
inspection by the Officer of the Port Local Authority.
This Declaration of Health must be completed and ready to deliver to the
Officer of 1I.M. Customs, or Officer of Port Sanitary Authority, whichever
shall first board the vessel.
THE MAXIMUM PENALTY FOR BREACH OF THE PORT
SANITARY REGULATIONS IS ONE HmSTDREB POUNDS.