A guide book to the Local marine board examination. The ordinary examination. [With] The requisite elements from the Nautical almanac for 1865, for the exercises in Ainsley's Guide book |
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Página 117
... March 31st ? Ship date ( A.T. ) March Long . 155 ° 19 ' W. 31d oh om os + 10 21 16 Green . date ( A.T ) March 31 10 21 16 In example 10 , the hours , & c . , of longitude to be subtracted are to be taken from a borrowed day , thus ...
... March 31st ? Ship date ( A.T. ) March Long . 155 ° 19 ' W. 31d oh om os + 10 21 16 Green . date ( A.T ) March 31 10 21 16 In example 10 , the hours , & c . , of longitude to be subtracted are to be taken from a borrowed day , thus ...
Página 118
... March 15th , at 59 16 4 o E. 5 . " " April 11th , at I 40 45 E. 6 . " " May 15th , at 8 38 7 . " " June 1st , at 6 14 IO A.M. mean time , long . 14151 long . 50 15 W. 12 8 . November 1st , at 5 O IO P.M. mean time , " " 9 . December 1st ...
... March 15th , at 59 16 4 o E. 5 . " " April 11th , at I 40 45 E. 6 . " " May 15th , at 8 38 7 . " " June 1st , at 6 14 IO A.M. mean time , long . 14151 long . 50 15 W. 12 8 . November 1st , at 5 O IO P.M. mean time , " " 9 . December 1st ...
Página 120
... March when the declination changes from South to North , and in September when it changes from North to South , if the correction , by being subtractive , exceeds the declination , subtract the declination from the correction , and call ...
... March when the declination changes from South to North , and in September when it changes from North to South , if the correction , by being subtractive , exceeds the declination , subtract the declination from the correction , and call ...
Página 121
... March 21st , 3h 10m 128 P.M. , app . time at ship , long , 175 ° 48 ′ E .; required the sun's declination . Ship date ( A.T. ) Mar. 21d 3h 10m12s or 20 27 10 12 II 43 12 Longitude 175 ° 48 ' E. Green . date ( AT ) Mar. 20 15 27 Ship ...
... March 21st , 3h 10m 128 P.M. , app . time at ship , long , 175 ° 48 ′ E .; required the sun's declination . Ship date ( A.T. ) Mar. 21d 3h 10m12s or 20 27 10 12 II 43 12 Longitude 175 ° 48 ' E. Green . date ( AT ) Mar. 20 15 27 Ship ...
Página 122
... March and September ; hence to ensure it to 1 " in the extreme case , the Greenwich date must be true to im . EXAMPLES FOR PRACTICE . In each of the following examples it is required to find the sun's declination when the sun is on the ...
... March and September ; hence to ensure it to 1 " in the extreme case , the Greenwich date must be true to im . EXAMPLES FOR PRACTICE . In each of the following examples it is required to find the sun's declination when the sun is on the ...
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A Guide Book to the Local Marine Board Examination. the Ordinary Examination ... Thomas Liddell Ainsley Sin vista previa disponible - 2016 |
Términos y frases comunes
A.M. at ship altitude of sun's altitude sun's L.L. anchor astream bearing by compass boiler Bottomry brace Bristol Channel cargo charter-party chronometer column common logarithms compass course cosec cosine course and distance daily decl declination deviation diff difference of latitude difference of longitude dunnage East equator eye 18 feet fathoms fixed light given Green Greenwich date Greenwich mean haul height of eye helm high water hour-angle index corr index correction lightvessel London Bridge mantissa mast mast-head master MATE mean noon Mercator's middle latitude miles minutes Nautical Almanac Norie North observed altitude sun's observed meridian altitude P.M. apparent P.M. tides parallel sailing Polar dist port Raper Required the course required the latitude Rule sail secant Semi-diameter semid set by compass Ship date sine South steam subtract topmast True altitude true azimuth true course vessel wind yard ΙΟ
Pasajes populares
Página 221 - Nothing in these rules shall exonerate any ship, or the owner, or master, or crew thereof, from the consequences of any neglect to carry lights or signals, or of any neglect to keep a proper look.out, or of the neglect of any precaution which may be required by the ordinary practice of seamen, or by the special circumstances of the case.
Página 221 - In obeying and construing these rules due regard must be had to all dangers of navigation ; and due regard must also be had to any special circumstances which may exist in any particular case rendering a departure from the above rules necessary in order to avoid immediate danger.
Página 220 - A vessel which, is closehauled on the port tack shall keep out of the way of a vessel which is closehauled on the starboard tack. (c) When both are running free, with the wind on different sides, the vessel which has the wind on the port side shall keep out of the way of the other.
Página 221 - If two ships under steam are crossing so as to involve risk of collision, the ship which has the other on her own starboard side shall keep out of the way of the other.
Página 221 - When two sailing ships are crossing so as to involve risk of collision, then, if they have the wind on different sides, the ship with the wind on the port side shall keep out of the way...
Página 220 - When two steam vessels are meeting end on, or nearly end on, so as to involve risk of collision, each shall alter her course to starboard so that each may pass on the port side of the other.
Página 220 - Pilot vessels, when engaged on their station on pilotage duty, shall not show the lights required for other vessels, but shall carry a white light at the masthead, visible all round the horizon, and shall also exhibit a flare-up light or flare-up lights at short intervals, which shall never exceed fifteen minutes.
Página 221 - Every steamship, when approaching another ship so as to involve risk of collision, shall slacken her speed, or if necessary stop and reverse ; and every steamship shall, when in a fog, go at a moderate speed.
Página 219 - A bright White Light at the Foremast Head. A Green Light on the Starboard side. A Red Light on the Port side.
Página 220 - Open boats shall not be required to carry the side lights required for other vessels, but shall, if they do not carry such lights, carry a lantern having a green slide on...