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at once take such steps as are necessary to inform a Health Officer of the facts of the case and shall display the appropriate Quarantine Signal, and shall not permit any further communi- cation with the shore, but shall wait for instructions from a Health Officer.

of sickness

45. In case any vessel in the waters of the Colony which Duty of carries no surgeon has on board any sickness, the nature of master in case which the master is unable to determine, he shall at once hoist where no the call flag for medical assistance (letter M in the International surgeon is Code of Signals over the Code Pennant), shall take such measures as may be necessary to inform a Health Officer and shall await his directions.

carried.

management

46. This Ordinance and the regulations made thereunder Internal shall not in any way interfere with the internal management of of ships of any of His Majesty's ships or of foreign ships of war, or with war not to their freedom to proceed to sea, whenever the officer in command may deem such course requisite.

Plague Precautionary Measures,

be interfered with.

47. Plague infected vessels and aircraft shall be sub- Plague jected to the following measures :—

(i) Medical inspection.

(ii) The sick shall be immediately disembarked and isolated.

(iii) All persons who have been in contact with the sick and those whom a Health Officer has reason to consider suspect shall be disembarked if possible. They may be sub- jected to observation, or to surveillance, or to observation followed by surveillance, provided that the total duration of these measures does not exceed six days from the arrival of the vessel.

(iv) Bedding, soiled linen, wearing apparel and other articles which, in the opinion of a Health Officer, are infected shall be disinsectised and if necessary disinfected.

(v) The parts of the vessel which have been occupied by persons suffering from plague or which in the opinion of a Health Officer are infected shall be disinsectised and if necessary disinfected.

précaution-

ary measures in case of infected vessels or aircraft.

48.—(1) A Health Officer may require deratisation Provisions before the unloading of cargo, if he is of opinion, having discharge

relating to regard to the nature of the cargo and the way it is loaded, of cargo. that it is possible to effect a total destruction of the rats before unloading. In this case a ship shall not be subjected to a new deratisation after unloading. In other cases the complete destruction of the rats shall be effected on board when the holds are empty. In the case of ships in ballast, this process shall be carried out as soon as possible before taking cargo.

(2) If the vessel is to unload a part of its cargo only and if a Health Officer considers that it is impossible to remain carry out complete deratisation, the said vessel may in port for the time required to unload that part of its