(3)Knowledge required: - Such candidate should:-(a)be able to write a legible hand and have a good knowledge of arithmetic up to and including vulgar and decimal fractions and square root. He shall also be able to work out questions relating to spring or level loaded safety and relief valve, consumption of oils and stores capacities of tanks to bunkers, speed of vessels and other similar problem and be to calculate suitable working pressures for air received of given dimensions and the stress per square inch on crank and tunnel shafts and other parts of the machinery when the necessary data are furnished;(b)be able to give a clear explanation of the principles on which oil, gas or other internal combustion of the principles on which oil, gas or other internal combustion engine works, including the methods of ignition, to point out the difference between them and to show by means of illustrative sketches and otherwise, that he understands the details of the constructions of those in general use.(c)be familiar with the various methods if supplying air and fuel to the cylinders in the different types of engines, the constructions of the apparatus for carbureting, atomizing or gasifying the fuel, and the means for cooling the cylinders, pistons, etc.(d)have satisfactory knowledge of the process employed in the construction of internal combustion engines in the workshop and of the methods used in fitting the machinery on board a ship.(e)Know what attention is required by the various parts of the machinery and understand the use and management of the deferent valves, cocks, pipes and connections.(f)be able to state and describe the chief cause which may make the engine difficult to start and explain how he would proceed to remedy any defects arising there from. He shall also be able to show that he understands the mechanism of the starting and reversing arrangements and is competent to deal with defects therein.(g)understand how to make good the result of ordinary wear and tear to the machinery, how to test the fairness of shafting, etc. and how temporary or permanent repair could be affected in case of derangement or total breakdown.(h)understand the construction of the pressure gauge, barometer, thermometer and other instruments used in the engine room and the principle on which they work.(i)understand the construction and working knowledge of centrifugal bucket and plunger pumps and the principles on which the work.(j)the provisions of the I.V. rules for Life Saving, Fire Appliances and general discipline.Chapter - 4.1 Certificate of Competency to Masters and Serangs of Inland Vessels
