26
(3) Mensuration. Areas and perimeters of rectangle, triangle and circk. Volumes and surface areas of box shaped bodies, cylinders, wedges and spheres. Practical applications, e.g. weight of general cargo of various shapes; volumes of holds, bunkers and tanks; weight of contents.
(4) Practical Geometry. The construction of plane triangles. Congruence of triangles. The right-angled triangle. Exterior angle equal to the sum of the interior opposite angles. Sum of angles in a triangle. Similar triangles and ratio of corresponding sides. Parallel lines and transversal Properties of circles, chords and tangents, "Angle in a semicircle; angles sublended by any chord of i circle. Fortes, resultant forces and their components. The vector diagram.
(5) Trigonometry, Measurement of angles. Circular meASUIC. Tree nometrical rates up to one complete revolution. Haversing, Simple relation- ship between ratios. Complementary and supplementary angles and their radim, Simple Identities. Solution of right-angled and oblique-angled triangles including practical problems based thereon. The use of the Traverse Tables for solution of right-angled triangles. Elementary properties of spherical triangles. Solution of spherical triangles (given three sides or two sides and the included angle), Solution of right-angled and quadracial spherical triangles.
ing-
11. Paper S. (written).
Principles of Navigation. (2 hours).
(In this paper candidates may be asked to draw a figure reasonably to scale
and to stale the projection used.)
Candidates will be required to have a general understanding of the follow-
(1) The shape of the Earth. Poles. Equator. Meridians. Parallels of Latitude. The position of a place fixed by its latitude and longitude. Direction, bearing, distance, units of measurement. Difference of latitude, difference of longitude, departure, middle latitude and meridional difference of latitude and the relationships between them. Great and small circles on a sphere. Shorted distance on the surface of a sphere between two points.
(2) The celestial sphere, celestial poles, celestial meridian above and below poles, celestial equator, celestial horizon, zenith, prime vertical, circles of altitude. (3) Solar system. The movement of the Earth and other heavenly bodies. Mean Sun. Ecliptic. First Point of Aries, Declination. Right Ascension. Azimuth. Rising and selling of heavenly bodies. Length of day and night. Twilight. The position of a heavenly body on the celestial sphere both with and without reference to the observer, La. Azimuth with Altitude or Declination with Right Ascension, Recognition of stars of the ist Magnitude by reference to the Principal Constellations.
(4) Time, Greenwich and other Standard times. Mean time. Apparoot Lime. Sidereal time. Equation of time. Relationship between longitude and time.
(5) Hour Angle of a heavenly body in time and in are. Greenwich Hour Angle of Sun, Moon, Planets and Aries." Sidereal Hour Angle of a Star.
(6) Correction of Sextant altitudes. Dip, Refraction, Horizontal Paralles. Parallax in Altitude, Semi Diameter and augmentation.
(7) Geographical position of a heavy body. A circle of position on the earth and its practical application, ¿e. position line. Intercept.
(8) Magnetic Meridian. Variation and Deviation.
(9) The simple properties of a Mercator Chart. Longitude and Latitude scales. The measuremeat of distance. Rhumb Lines. Meridional Parts.
(10) Chronometers. Management and care, winding, rating and compariat
12. Paper 6. (written).
27
English. (14 hours).
The paper will be designed to test the candidate's ability to write clear and grammatical English with due attention to spelling, legibility and neatness. It will be in no sense a test of technical knowledge. This paper may consist of any essay, a prepis or an exercise in letter writing.
13. Oral and Practical.
(1) (a) Rigging of ships. Strength of ropes including wire ropes. Rigging purchases of various kinds and knowledge of power gained by pur- chases. Kootting and splicing with strict reference to current practice. Seizings, rackings, chain stoppers, etc.
(b) Seading topmasts up and down.
(c) Bending, setting and taking in lifeboat sails. Management of boats under cars or sail and in heavy weather. Beaching or landing. Coming alongside.
(d) Helm Orders. Conning the ship. Effects of propellers on the steering of a ship. Stopping, going astern and manoeuvring. Turning a steam- ship short round Emergency manoeuvres. Man overboard.
(2) (a) Marking and use of ordinary lead line.
(b) Use and upkeep of mechanical fogs sounding appliances,
(e) Use and upkeep of engine room and other telegraphs.
(d) Rocket and line throwing apparatus.
(3) (a) Anchors and cables and their use and stowage. Bringing a ship to
a single anchor in an emergency,
(b) Knowledge of use and maintenance of deck appliances and steering
gear.
(c) The use of lifesaving appliances.
(4) The use of Fire Appliances including the Smoke Helmet.
(4) (a) Preparations for getting under way. Duties prior to proceeding to sea, making harbour, entering a dock, Coming alongside, and securing to a buoy, with special reference to the after end of a ship.
(b) Keeping an anchor watch. Dragging anchor.
(c) Duties of officer of the watch. Use of compass to ascertain risk of
collision.
(5) (0) A full knowledge of the content and application of the regulations for preventing collisions at sea, (Candidates will not be placed in the position of handling a sailing ship, but will be expected to recognize a sailing ship's lights and to have a knowledge of her possible manoeuvres according to the direction of the wind).
(b) Distress and pilot signals; penalties for misuse.
(c) British uniform system of buoyage; wreck marking system,
(d) A knowledge of the contents of the Ministry of Transport Book of Merchant Shipping Notices and the use of Admiralty Notices to Mariners.
(5) (a) To read and understand a barometer, thermometer, hydrometer, and hygrometer. (The instruments supplied by the Meteorological Office will be taken as standard),
(b) To use an azimuth mirror, pelorus (bearing plate) or other instrument
for taking bearings.
(c) To use a sextant for taking vertical and horizontal angles; to read a
sextant both on and off the are.
(c) To correct a sextant into which has been introduced one or more of
perpendicularity, side or index errors,
No comments yet.
Private notes are available after approval.