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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Страница 47
... taken out of the Tables . J. 8 8. 6315 15. 092096 22. 93 7654 29 . 30000'9 2 . ΟΙ 9 . 6390 16. 0.0899 23. 52790 30 . 10000'9 3 . 4'9 10 . 0'1463 17. JOOOO 24. 50000 31 . 594500 4 . 38 11 . 3.874 18. 48c00 25. 700090 32 . 88590000 5 ...
... taken out of the Tables . J. 8 8. 6315 15. 092096 22. 93 7654 29 . 30000'9 2 . ΟΙ 9 . 6390 16. 0.0899 23. 52790 30 . 10000'9 3 . 4'9 10 . 0'1463 17. JOOOO 24. 50000 31 . 594500 4 . 38 11 . 3.874 18. 48c00 25. 700090 32 . 88590000 5 ...
Страница 48
... taken from the Table , we have 77 log . 1886491 100 log . 2.000000 7700 log . 3.886491 We have here added the logs . of the given factors , and having sought in the Table for the mantissa 886491 , we have found the figures of the nat ...
... taken from the Table , we have 77 log . 1886491 100 log . 2.000000 7700 log . 3.886491 We have here added the logs . of the given factors , and having sought in the Table for the mantissa 886491 , we have found the figures of the nat ...
Страница 49
... taken from the Table , we have 963 log . 2.983626 48 9 log . 1689309 Log . 4'672935 4709 ( next lower in Tab . ) 672929 6. Multiply 734 by 23 . 734 log . 2.865696 23 log . 1361728 log . 4 227424 1688 ( Next lower mantissa ) 227372 ...
... taken from the Table , we have 963 log . 2.983626 48 9 log . 1689309 Log . 4'672935 4709 ( next lower in Tab . ) 672929 6. Multiply 734 by 23 . 734 log . 2.865696 23 log . 1361728 log . 4 227424 1688 ( Next lower mantissa ) 227372 ...
Страница 50
... taken as they are both negative ( Rule XXII , ( a ) ) . Or thus : -- 17:25 log . 1236789 82 log . I913814 065 log . 2.812913 0919425 log . T'963516 Here we have 1 to carry from the mantissa , which added to the positive index 1 ( index ...
... taken as they are both negative ( Rule XXII , ( a ) ) . Or thus : -- 17:25 log . 1236789 82 log . I913814 065 log . 2.812913 0919425 log . T'963516 Here we have 1 to carry from the mantissa , which added to the positive index 1 ( index ...
Страница 51
... taken away from what is positive , or added to what is negative in the remainder . We change the sign of the ... taken out according to Rule XIV , page 41 , and the log . of 76 by Rule XII , page 40 . Quotient 3192 log . 3.504063 76 log ...
... taken away from what is positive , or added to what is negative in the remainder . We change the sign of the ... taken out according to Rule XIV , page 41 , and the log . of 76 by Rule XII , page 40 . Quotient 3192 log . 3.504063 76 log ...
Чести термини и фразе
A.M. at ship acct altitude sun's L.L. anchor bearing by compass charter-party chronometer column common logarithms compass course cosec cosine course and distance cyphers daily decimal point decl declination deviation difference of latitude difference of longitude dunnage East equator error EXAMINATION EXAMPLES FOR PRACTICE eye 18 feet fast fathoms fixed light Flags given Green Greenwich date Greenwich mean haul height of eye helm high water hour-angle Hourly diff index corr index correction June leeway London Bridge longitude by chronometer mantissa master miles minutes Multiply Nautical Almanac Norie North observed altitude sun's observed meridian altitude P.M. tides parallel sailing Polar dist port Raper required the latitude Rule sail secant Semi-diameter semid set by compass sextant side Signal sine South starboard subtract True altitude true azimuth true course Variation 2 points vessel West wind yard
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Страница 303 - Vessels, be exhibited on their respective Sides in sufficient Time to prevent Collision, in such manner as to make them most visible, and so that the Green Light shall not be seen on the Port Side, nor the Red Light on the Starboard Side.
Страница 302 - ... abaft the beam on the starboard side, and of such a character as to be visible at a distance of at least two miles.
Страница 309 - The said green and red side lights shall be fitted with inboard screens projecting at least three feet forward from the light, so as to prevent these lights from being seen across the bow.
Страница 302 - On the starboard side a green light so constructed as to show an unbroken light over an arc of the horizon of...
Страница 302 - In the following rules every steam vessel which is under sail and not under steam is to be considered a sailing vessel, and every vessel under steam, whether under sail or not, is to be considered a steam vessel. The words "steam vessel" shall include any vessel propelled by machinery. A vessel is "under way...
Страница 314 - 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.
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Страница 303 - Lights required for other Vessels ; but shall, if they do not carry such Lights, carry a Lantern having a Green Slide on the One Side, and a Red Slide on the other Side ; and on the Approach of or to other Vessels, such Lantern shall be exhibited in sufficient time to prevent Collision, so that the Green Light shall not be seen on the Port Side, nor the Red Light on the Starboard Side.
Страница 336 - The names of every seaman or apprentice who ceases to be a member of the crew, otherwise than by death, with the place, time, manner, and cause thereof.
Страница 302 - ... which is under steam, whether under sail or not, is to be considered a ship under steam. Rules concerning Lights (a).