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(2) A simple knowledge of the types of refrigeration systems used on board
ships.
(2) Electricity,
(a) The simple alternator. Alternating current; frequency, phase relation ship between two alternating quandties; effects of induciance, capacity and resistance, Resonance." Tumed circuits. The power transformer. The simple telephone and microphone.
(b) R. F. oscillations. Radiation of electro-magnetic waves in free space- frequency, velocity and wavelength and their relationship. Reception of electro-magnetic waves. Effects of the Ionosphere-ground wave, sky wave.
(c) Thermionic valves. Thermal amission. Diodo valve-use as a rectifier. Triode valve use as voltage amplifier and use as simple oscillator. (d) Cathode ray Lube-construction and action; electrostatic and electro-
magnetic deflection. The time base as applied to CRT.
(3) Electronic Navigation Aids.
(a) A simple knowledge of how Radar works. Displays, range and bearing discrimination, calibration, range strobes, monitoring, spurious echoes, side lobe effects, blind sectors, anomalous propagation and weather effects. Its use as an anti-collision devics and navigational aid and an appreciation of its Imitations.
(8) The general principles underlying Hyperbolical Navigation. Funda-
rental differences between various systems.
(c) A general knowledge of ship W/T direction finding: Rotating loop and gosiometer systems. Maximum and minimum signals; Sense. Quad- rantal error. Calibration. Sunset and sunrise effects. Land effects.
A general principle of echo sounding. Methods of transmission. Timing device. The receiver. Methods of recording, Reliability of indications.
29. Paper 6 (written)
Meteorology. (2 hours).
(In addition to the Syllabus for First Males)
(1) The principal cloud types.
(2) Simple ideas of air masses and fronts.
(3) Adiabatic changes in the atmosphere. Stability and instability.
(4) The frontal theory of the formation of depressions.
(5) To construct a synoptic chart (excluding froots), from a number of coded groups as given in Paris V and VI of Weather Messages for Shipping.
(6) To decode groups as given in the international analysis code, (Part IV) Weather Message for Shipping, and draw the weather map.
(7) The use of a synoptic chart or weather map for deducing the probable weather and anticipated changes at a specified point or points.
(8) The main types of floating ice and their origin. General ideas of dis- tribution and seasonal movements. Navigation in the vicinity of ice.
(9) General points to consider in the selection of ocean routes.
30. Oral,
(1) (a) Exceptional circumstances. Loss of rudder; shifting a damaged rudder. Construction of jury rudders. Making and launching of rats. Collision. Leeks. Damage of all kinds. Running repairs and precau- tions in case of accidents. Grounding-methods of refloating Beaching a vessel. Steps to be taken when disabled and in distress.
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(6) Preservation of crew and passengers in the event of wreck Abandoning a wrecked ship. Rockets and rocket apparatus. Communications with
the shore.
(c) Assisting a vessel in distress, Rescuing crew of a disabled ship. (d) Towing and being towed.
(e) Bad weather manoeuvres. Precautions at anchor and at sea. Use of oil. Anchoring and working anchors and cables in all circumstances. Approaching rivers and harbours and manoeuvring in thema, Drydocking. General procedure and precautions to be observed. Distribution of weight." Drydocking with full cargo for inspection of propellery or shafting Bilge blocks. Leaving the vessel water borne. Putting into port with damage to ship or cargo, both from business and technical" points of view." Safeguarding of dugo,
(g) Prevention of fire at sea Spontaneous combustion. Full knowledge
of the use of fire appliances and the precautions to be taken in their use. Special reference to the extinguishing of all fuel Áres.
(4) Methods of fumigating holds and living spaces and safeguards in
applying them.
(0) General organization of a ship's work and handling and training of A knowledge of training facilities available to members of the
crew.
crew.
(A) Compensation and adjustinent of compasses. Demonstrations on Beall's
Compass Deviascope or Instructional Binnacle.
(2) Regulations for preventing collisions at sea, etc. As for paragraph 19(e) (Oral: Second Mate)
(3) The examiner may ask the candidate questions arising out of the written work, if he deems it necessary on account of weakness shown by the candidate.
31. Signals. To send and receivo signals in-
WALLA
(4) British Semaphore up to eight words per minute.
(b) Morse Code by flash lamp up to six words per minute.
(c) International Code of Signals.
Trawling Skipper (Limited);
12. Pilotage (3 hours-Marks 200).
Note. Only charts of the areas adjacent to Hong Kong will be used in the examination.
A candidate will be required--
(1) to use an Admiralty chart or plan and to answer questions orally on the information to be derived therefrom e.g. abbreviations, conventional signs, depth of water, nature of sea bed, navigational marks, buoys and lights, variation, measurement of distance, eloj
(2) to set a course to steer by compass from a given position to Hong Kong or to any other place of safety or given position, allowing for the set and drift of a given tide or currents; the first position may be given of the data given to fix it either by given simultaneous cross bearings or by plotting a given course and distance run from a previous given position making due allowance for a given tide or current;
(3) to find the estimated position of the ship by means of two bearings of the same shore object," making duc allowance for a given tide or current during the period of run on å given course between the first and second begringa; and to find the distance at which the ship will pass a given point;
(4) to be able to take a bearing by compass, and by using a card of deviations, convert it to a magnetic and thence to a true direction to lay off on a chart;