Fix, Departure, §18, p34 Flags and pennants of International code, $20, p2 Foci of ellipse, §12, p22 Fog signals for fishing vessels, §20, p18 signals for vessels at anchor, §20, p19 signals for vessels towing and towed, §20, p19 Speed of ships in, §20, p20 Foggy weather, To find deviation in, §15, p59 Formula for altitude-azimuth method, §15, p36 for amplitude, §15, p27 for hour angle, §15, p2 for time-azimuth method, §15, p41 Formulas for calculating the point of inter- section, §18, p2 for computing altitude, §17, p4 Freight, or freight money, §20, p36 G General average, $20, p35 formula for latitude, §14, p4 date, How to find, §13, p22 Guide to applicants for license, $20, p44 Gulf stream, Description of, §19, p41 stream, Temperature of, §19, p42 H Hack chronometer, §14, p49 Heat, Explanation of, §19, p2 High water, To compute time of, §19, p51 Hilaire lines, Calculating the intersection point of, §18, pl lines, Transfer of, §17, p20 Dip of, $12, p60 glass, Adjustment of, §12, p52 Rational, $12, p6 system. §12, p8 True, $12, p6 Horizontal parallax, §12, p64 parallax of moon. To find, §13, p33 Horse latitudes, §19, p15 Hour angle and azimuth, Simultaneous obser- angle, Formula for, §15, p2 angle of celestial body, §12, p13 Hurricane signals, §20, p11 signs, $19, p28 Hydrometer, §20, p49 I Identification of stars, §18, p39 Index error, Determination of, §12, p53 glass, Adjustment of, §12, p52 Indian Ocean, Currents of, §19, p46 Indications of cyclone, Earliest, §19, p28 planets, $12, p20 Instruments, Azimuth, §15, p50 Intercept along cardinal point, §18, p16 Limitations of table of, §18, p18 Opposed, different quadrants, §18, p13 International code book, §20, p2 code, Flags and pennants of, §20, p2 code signals, §20, pl rules, Remarks on, $20, p23 rules to prevent collision at sea, §20, p12 Intersecting Sumner lines, §16, p9 Interval, Lunitidal, §19, p48 Isobars, Explanation of, §19, p9 Intersection point of Hilaire lines, Formulas for calculating, §18, p2 J Japan stream or current, §19, p44 Jettison, $20, p36 Johnson's method, Explanation of, §16, p34 method, Remarks on, §16, p37 Julian calendar, §13, p10 Jury, or temporary, rudder, §19, p66 Limitation of method of latitude by reduction to meridian, §14, p38 Limits of trade winds, §19, p15 Line of position tables, §17, p47 Lines, Hilaire, Transfer of, §17, p20 of position, §16, p3 Determining, §17, pl Local mean time, §13, p7 Locating plotting points in St. Hilaire's method, §17, p21 Location of principal stars, §12, p40 Log book, Official, §20, p52 Longitude by chronometer, §15, pl by equal altitudes of the sun, §16, p49 by sunrise and sunset sights, §15, p22 celestial, Circles of, §12, p17 M M and N method, Latitude by, §14, p35 Major axis of ellipse, §12, p22 planets, §12, p20 Manifest, §20, p34 Maritime disasters, Suggestions relating to. $20, p37 Mean solar day, §13, p5 solar time, §13, p5 sun. §13, p5 sun, To find right ascension of, §13, p30 time, To find, from apparent time, §13, p42 Mercurial barometer, §19, p6 barometer, How to read a, §19, p7 barometer, Weather indications by, $19, p32 altitude at lower transit, §14, p6 altitude below the pole, Latitude by, §14, p25 altitude, Definition of, §14, p2 altitude of moon, Latitude by, §14, p21 altitude of planet, Latitude by, §14, p19 altitude of star, Latitude by, §14, p13 passage of a celestial body, §13, pl Meridian, passage of a planet, To find, §13, p40 passage of stars, To find apparent time of, passage of the moon, To find, §13, p37 Meteorological observations at sea, §19, p36 Minor axis of ellipse, §12, p22 planets, §12, p20 Monsoon, Breaking of, §19, p19 Summer, §19, p19 Winter, $19, p19 Monsoons, §19, p17 Month, Sidereal, §12, p32 Synodic, §12, p32 Moon and planets, Longitude by the, §15, p20 Phases of the, §12, p33 Remarks on observations of the, §14, p24 Rotation and libration of the, §12, p32 Moon's declination and right ascension, To find the, §13, p32 horizontal parallax, To find the, §13, p33 Progressive, of a cyclone, §19, p22 Retrograde, of a celestial body, §12, p26 Rotary, of a cyclone, §19, p22 Motions of the earth, $12, p28 N Nadir and zenith, §12, p6 Nautical Almanac, Explanation of, §13, p21 Almanac, 1914, Extracts from §17, p49 astronomy, Explanation of, §12, pl Navigation, Cautionary remarks on, §18, p34 Navigator's prism, §12, p61 routine work, §18, p37 positions, Plotting of, §16, p8 Obliquity of the ecliptic, §12, p16 near meridian, St. Hilaire's method, §17, p35 Simultaneous, for Sumner lines, §16, p10 amplitude, Correction of, §15, p28 meteorology, §19, pl Oil, Use of, in stormy weather, §19, p61 One-flag signals, §20, p3 §18, p13 Different quadrants, intercepts, Same quadrant, §18, p11 of a celestial body, $12, p19 Origin of Sumner's method, §16, p33 P Pacific Ocean, Currents of, §19, p44 Parallax, Annual, §12, p38 Diurnal, §12, p64 Geocentric, §12, p63 Horizontal, §12, p64 of celestial body, §12, p63 Parts, proportional, Use of, §15, p10 To find magnetic course by, §15, p55 To find true course by, $15, p56 Use of, to head ship in any magnetic direc- Pennant, Answering, $20, pl Pennants and flags of International code, $20, p2 Penumbra of eclipse, §12, p34 Perihelion of an orbit, §12, p23 Period, Sidereal. §12, p27 Synodic, §12, p27 Phases of the moon, §12, p33 Elongation of a, §12, p25 Latitude by meridian altitude of a, §14, p19 Opposition of a, §12, p25 Quadrature of a, §12, p25 Time sight of a, §15, p20 Planets and the moon, Longitude by, §15, p20 declination and right ascension of, To find, §13, p36 Inferior, $12, p20 Major, §12, p20 meridian passage of, To find, §13, p40 Minor, $12, p20 Movement of, §12, p20 Rotation of, §12, p21 Superior, §12, p20 Utilization of, §12, p43 Position lines, Comparison of, §17, p27 of ship, To determine, in relation to storm track, $19, p29 tables, Line of, §17, p47 track, §19, p29 Positive intercepts, different quadrants, §18, p5 intercepts, same quadrant, §18, p10 Practical astronomy, §12, p2 Precession and nutation, §12, p30 of the equinoxes, §12, p30 Present and future pole stars, §14, p47 Pressure of cyclone, Barometric, §19, p24 Prime vertical, $12, p9 vertical, Latitude by change of altitude near the. §14, p41 Principles of St. Hilaire's method, §17, pl Problems relating to license examination, $20, p48 relating to time, §13, p42 Progressive motion of cyclone, §19, p22 Protest, $20, p34 Puna, The, §19, p20 Quadrant, §12, p58 Quadrature of a planet, §12, p25 R Right ascension and declination of the moon, To find, §13, p32 ascension of a celestial body, §12, p14 ascension of mean sun, To find the, §13, p30 Rodenian time diagram, §15, p8 Rotary motion of a cyclone, §19, p22 Rotation and libration of the moon, §12, p32 of planets, §12, p21 Routine work, Navigator's, §18, p37 international, Remarks on, §20, p23 International, to prevent collisions at sea, Run, Correction for, §15, p11 Runs, Treatment of, in St. Hilaire's method, S Sailing and steering rules, §20, p20 ships, Steering and sailing rules for, §20, p20 Sale of vessels, $20, p40 Salvage of vessels, §20, p41 Satellite, Definition of, §12, p20 Sea, Abandonment at, §20, p43 anchor, or drag, §19, p62 anchors, Use of, in coaling ships, §19, p65 and land breezes, §19, p19 horizon, §12, p59 Swinging a ship at, §15, p58 Seasons, $12, p28 Cyclone, $19, p26 Selected signals, International code, §20, p5 Sextant, Reading a, §12, p48 Ship, draft of, To find, §20, p50 Notes on handling of, in heavy weather, $19, p59 Official log of, §20, p52 Suggestions for handling, in cyclones, §19, p28 Sidereal and apparent time, Relation between, day, §13, p2 period, §12, p27 time, §13, p2 time, Disadvantage of, §13, p5 time, To find, from mean time, §13, p44 Sights, Discrepancies in, §18, p41 Old code, $20, pl stations, Weather-Bureau, §20, p9 Signals as indicated by number of flags in a hoist, $20, p3 Cone, ball, and drum, §20, p6 Distant, $20, p6 Distress, at night, §20, p10 distress, Daytime, §20, p10 for attracting attention, §20, p18 for pilot, Daytime, §20, p11 Geographical, §20, p4 International code, §20, pl Life-saving, §20, p31 New-code, $20, p2 One-flag. $20, p3 Pilot, at night, §20, p11 -diameter of the moon, §12, p65 -diameter of the moon, To find the, §13, p33 -diameter of the sun, To find the, §13, p30 Adjustment of horizon glass of, §12, p52 Description of a, §12, p45 Graduation of a, §12, p47 How to use a, §12, p56 Position and duration of, §20, p5 Storm, §20, p11 Simoom and sirocco, §19, p20 Simultaneous observations for Sumner lines, Sine-cosine formula, §17, p4 Sky, Weather indications by appearance of, §19, p35 |