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a.m. at ship altitude of sun's altitude sun's l.l. anchor apparent astream bearing by compass boiler Bottomry brace cargo charter-party chronometer column common logarithms compass course cosec cosine course and distance daily decl declination departure deviation diff difference of latitude difference of longitude dunnage East equator EULE Examples eye 18 feet fathoms fixed light given 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 middle latitude miles minutes Multiply Nautical Almanac Norie North observed altitude sun's observed meridian altitude p.m. tides parallel sailing Polar dist port Required the course required the latitude required the variation sail secant semid set by compass Ship date sine South steam subtract topmast true amplitude true azimuth true course valve vessel wind yard
Page 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.
Page 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.
Page 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.
Page 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.
Page 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...
Page 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.
Page 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.
Page 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.
Page 219 - A bright White Light at the Foremast Head. A Green Light on the Starboard side. A Red Light on the Port side.