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 22
... means 5 tenths 6 hundredths , it will follow that 560 means 5 tenths , 6 hundredths , no thousandths ; whence the addition of the cypher to the right - hand has made no alteration in the value of the decimal . In fact 56 1000 100 ° * 56 ...
... means 5 tenths 6 hundredths , it will follow that 560 means 5 tenths , 6 hundredths , no thousandths ; whence the addition of the cypher to the right - hand has made no alteration in the value of the decimal . In fact 56 1000 100 ° * 56 ...
Página 46
... P 群 5.631642 4'368358 Ex . 2. Find the ar . co . of ' 9086540 Ar . co . log . required 0913460 The ar . co . of 2170630 is 7.829370 T - 217034 3.178680 10.782966 12.821320 A subtractive quantity is , by this means , made 46 ON LOGARITHMS .
... P 群 5.631642 4'368358 Ex . 2. Find the ar . co . of ' 9086540 Ar . co . log . required 0913460 The ar . co . of 2170630 is 7.829370 T - 217034 3.178680 10.782966 12.821320 A subtractive quantity is , by this means , made 46 ON LOGARITHMS .
Página 91
... means of the sight vanes , and where the fore - and - aft line meets the edge of the card , must then be the correct magnetic bearing of the ship's head . bearings which were observed with the compass on board , CORRECTING COURSES . 91.
... means of the sight vanes , and where the fore - and - aft line meets the edge of the card , must then be the correct magnetic bearing of the ship's head . bearings which were observed with the compass on board , CORRECTING COURSES . 91.
Página 144
... means of the approximate time at place and the approximate longitude . To find the Greenwich date , the time at any other place and the longitude being given . RULE LV . 1 ° . Express the ship time astronomically ( Rule LI , page 141 ) ...
... means of the approximate time at place and the approximate longitude . To find the Greenwich date , the time at any other place and the longitude being given . RULE LV . 1 ° . Express the ship time astronomically ( Rule LI , page 141 ) ...
Página 145
... mean time at ship , long , 50 ° 45 ′ E .: find Greenwich date . Ship date ( M.T. ) January Longitude in time Green . date ( M.T. ) Jan. 3d 8h12m 3 23 3 4 49 Ex . 5. July 20th , at 3h 35m 78 P.M. , mean time at ship , long . 85 ° 24 ′ E ...
... mean time at ship , long , 50 ° 45 ′ E .: find Greenwich date . Ship date ( M.T. ) January Longitude in time Green . date ( M.T. ) Jan. 3d 8h12m 3 23 3 4 49 Ex . 5. July 20th , at 3h 35m 78 P.M. , mean time at ship , long . 85 ° 24 ′ E ...
Términos y frases comunes
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
Pasajes populares
Página 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.
Página 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.
Página 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.
Página 302 - On the starboard side a green light so constructed as to show an unbroken light over an arc of the horizon of...
Página 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...
Página 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.
Página 309 - Whenever, as in the case of small vessels under way during bad weather, the green and red side lights cannot be fixed, these lights shall be kept at hand, lighted and ready for use : and shall, on the approach of or to other 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, nor, if practicable, more than two points...
Página 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.
Página 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.
Página 302 - ... which is under steam, whether under sail or not, is to be considered a ship under steam. Rules concerning Lights (a).