618960-1931-Rules-under-section-4-8-of-the-Merchant-Shipping-Ordinance-1899 — Page 3

460 THE HONG KONG GOVERNMENT GAZETTE, JUNE 26, 1931.

3. The rules set forth in the said Notification No. 180, amended as appears in the foregoing rule 2, shall apply to the conduct of examinations instituted for persons who wish to procure colonial certificates of competency as motor engineers in the Mercantile Marine, and as to the qualifications of the applicants, with the following alterations and modifications,-

(1) throughout the rules

for "ordinary", where used in respect of a certi- ficate or certificates, read motor".

66

(2) throughout the rules for "steam", as part of the word steamship

(whether in the singular or plural), read "motor".

11

(3) throughout — read а for "an

11

made under these rules so requires.

where a modification or alteration

(4) in rule 29 wherever 66 nominal horsepower occurs read “373 brake

horsepower";

(5) in rule 30-for requirements (l) (m) (n) (o) (p) (q) and (r) read,—

(1) to be able to give a clear explanation of the principles on which oil, gas, or other internal combustion engines work, including the methods of ignition; to point out the differences between them, and to show, by means of sketches and otherwise, that he understands the details of the construction of those in general use;

(m) to be familiar with the various methods of supplying air and fuel to the cylinders of engines of different types; the construction of the apparatus for carburetting, atomising or gasifying the fuel; the means of cooling the cylinders, pistons, etc.; and the construction and working of air compressors ;

(n) to have a satisfactory knowledge of the methods of constructing marine internal combustion engines, as used in the workshops; the processes to which the several parts are submitted, or which are incidental to their manufacture; and the methods employed in fitting the machinery on board ship;

(0) to know what attention is required to be paid to the various parts of the machinery; and to understand the use and management of the different valves, pipes and connections;

(p) to be able to state and describe the chief causes which make the engines difficult to start, and to explain how he would proceed to remedy any defects arising therefrom; also, to show that he under- stands the mechanism of the starting and reversing arrangements, and is competent to deal with any defects therein;

(g) to be able to explain the principle, construction and arrangement of primary and secondary batteries and induction coils, so far as is. necessary for the efficient management of an oil engine;

(?) to possess a good working knowledge of the construction and

management of auxiliary steam boilers and machinery;

(s) to be familiar with the nature and properties of the various oils, etc.,. generally used in internal combustion engines, and to understand what is meant by "flash" point; also to have a knowledge of the explosive properties of the gas or vapour given off by these oils, etc., when mixed with a definite quantity of air; and to be thoroughly conversant with the danger of exposing a naked light to such gas or vapour, or of allowing any leakage from the oil tanks, gas producers, pipes, vaporisers, etc., particularly into the vessel's bilges and other unventilated spaces;