by N.: Three points on starboard bow.īearing N. E.: Two points on starboard bow.īearing N. by E.: One point on starboard bow.īearing N. A lighthouse or other object if seen bearing North would also be said to bear, from that ship: Ahead.If seen bearing N. 2 a ship is represented as heading North. In referring to the position of an object, the direction of the wind, &c., with reference to the ship, use is frequently made of what are called relative bearings, instead of giving the directions in compass-points. It consists of a compass-card painted on a board or cut on a copper plate. 1/2 S.Ī Dumb Compass is used at the mast-heads, taffrail, &c., for taking relative bearings. In all other cases use that name of the quarter or half-point which ends with the word East or West. W., to the nearest whole point use that name which ends with the nearest cardinal point. From East or West to the nearest whole point, use for quarter-points that name which ends with the word North or South. The following are the usual rules for naming quarter-points:-ġst. 1/4 E.Ī quarter-point (or half-point) can obviously be named with reference to either one of the nearest whole points. To Box the Compass is to name the points in regular succession, beginning at one point and ending at the same thus, commencing with north and going around with the sun, say:-Įach point is further divided into half-points and quarter-points, and the fractional points are named upon the same principle as the points themselves thus:- N. The Lubber’s Point is a vertical line drawn on the inside of the bowl of the compass to correspond with the vessel’s head the point of the card coinciding with it shows the course steered, or the direction in which the ship is heading. The variation of the compass and its local errors are not noticed here, as they may be referred to in any book on Navigation. The needle and card are balanced on a pivot fixed vertically in the compass-box, or bowl, and the whole is protected by a glass covering.Īs the North mark of the compass-card always points with the needle to the North, the other marks will of course point to their respective parts of the horizon. The North end, or pole, of the needle is fixed under the North point of the card. 1, representing the horizon, and graduated with the thirty-two “points” of the compass. It consists of the needle, which is attached to the under side of a card, Fig. The Mariner’s Compass is based upon this principle. To this direction, as a standard, all others may be referred, and any desired course thus followed. The Compass– A piece of steel which has been touched by a magnet, if free to move on a pivot, will point in a definite direction.
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