modern seamanship1921 |
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Página 65
... given force , find two or more forces acting along given lines which may be substituted for the one original force without any change in the effect produced . This process is called " The Resolution of Forces " ; and the forces ...
... given force , find two or more forces acting along given lines which may be substituted for the one original force without any change in the effect produced . This process is called " The Resolution of Forces " ; and the forces ...
Página 66
... given force into two or more others acting along certain lines . Having given 13 tons acting along oz , suppose we are called upon to find two forces which , acting along o x and Oy , shall be equivalent to this original force . As ...
... given force into two or more others acting along certain lines . Having given 13 tons acting along oz , suppose we are called upon to find two forces which , acting along o x and Oy , shall be equivalent to this original force . As ...
Página 68
... given by this construction ( Fig . 5 , Plate 28 ) . Similarly we may deduce the rule : Thrust on boom Length of boom Weight = Length of mast It will be understood that the lengths given above for mast and boom are those actually ...
... given by this construction ( Fig . 5 , Plate 28 ) . Similarly we may deduce the rule : Thrust on boom Length of boom Weight = Length of mast It will be understood that the lengths given above for mast and boom are those actually ...
Página 70
... given length of mast and boom , then , the more nearly vertical the boom can be used the better . If we are at liberty to vary the length of the mast and boom to attain a given reach , we shall find that a short boom , nearly level ...
... given length of mast and boom , then , the more nearly vertical the boom can be used the better . If we are at liberty to vary the length of the mast and boom to attain a given reach , we shall find that a short boom , nearly level ...
Página 86
... given on the fall . The greater the number of parts to the tackle , the greater the gain in this respect as well as in the power . For heavy work with a three- or four - fold purchase , it is well to reeve the fall with the hauling part ...
... given on the fall . The greater the number of parts to the tackle , the greater the gain in this respect as well as in the power . For heavy work with a three- or four - fold purchase , it is well to reeve the fall with the hauling part ...
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Términos y frases comunes
abaft Air Tanks anchor battleships beam Bend bight Blackwall Hitch block boat boiler boom Bowline buoyancy cable Carrick Bend carry clear compass connected convenient course danger davits deck diameter dip-rope distance engines fathoms feet fibres Figure-of-Eight Knot force forward gear going ahead halyards handling hauling hawse hawse-pipe hawser head heavy helm hemp Hitch hoisting hook inches keel knots lashed launch length let go lift lower manila Manila Hemp mast mooring MOTOR LIFE BOAT oars Overhand Knot Plate port practice pump riding Rowlock rudder rules running Running Bowline sail screw secured shackle shaft sheave ship ship's side signals slack small-stuff spar speed splice starboard steam steam-vessel steamer steering stern stopper strands surf swing swivel tackle tension tons topping-lift towing turn United States Navy unshackled usually vessel weight white light wind windlass wire rope yard
Pasajes populares
Página 358 - Every vessel coming up with another vessel from any direction more than two points abaft her beam — that is, in such a position, with reference to the vessel which she is overtaking that at night she would be unable to see either of that vessel's side lights — shall be deemed to be an overtaking vessel...
Página 347 - When two sailing vessels are approaching one another, so as to involve risk of collision, one of them shall keep out of the way of the other as follows, viz.
Página 311 - ... points of the compass, so fixed as to throw the light from right ahead to two points abaft the beam on...
Página 349 - This article only applies to cases where vessels are meeting end on, or nearly end on, in such a manner as to involve risk of collision...
Página 376 - War in pursuance of the provisions of the said section eleven, shall be deemed guilty of a misdemeanor, and on conviction thereof shall be punished by a fine not exceeding twenty-five hundred dollars nor less than five hundred dollars, or by imprisonment (in the case of a natural person), not exceeding one year, or by both such punishments, in the discretion of the court.
Página 338 - ... (v) A vessel when towing, a vessel engaged in laying or in picking up a submarine cable or navigation mark, and a vessel under way which is unable to get out of the way of an approaching vessel through being not under command or unable to manoeuvre as required by these Rules...
Página 365 - When a vessel is in distress and requires assistance from other vessels or from the shore the following shall be the signals to be used or displayed by her, either together or separately, namely: In the daytime: First.
Página 348 - ... other; in other words, to cases in which by day each vessel sees the masts of the other in a line or nearly in...
Página 330 - Sailing vessels and boats of less than 20 tons gross tonnage shall not be obliged to give the above-mentioned signals; but if they do not, they shall make some other efficient sound signal at intervals of not more than one minute.
Página 357 - Where by any of these rules one of two vessels is to keep out of the way, the other shall keep her course and speed.