This is a system of denoting impromptu relative bearing widely used in practical navigation to give the position of an observed object readily and comprehensibly. It has general application to circumstances in which the location of one object with respect to another must be systematized. The clock system is not confined to transportation. For example, 12 o'clock means directly ahead, 3 o'clock means directly to the right, 6 o'clock means directly behind, and 9 o'clock means directly to the left. Neglecting the length of the vessel, and presuming that he is at the bow, he observes the time number lying on the line of sight. In this analogy, the observer imagines the vessel located on a horizontal clock face with the front at 12:00. The observer then measures or observes the angle made by the intersection of the line of sight to the longitudinal axis, the dimension of length, of the vessel, using the clock analogy.
These quarters may have specialized names, such as bow and stern for a vessel, or nose and tail for an aircraft. The vehicle must be considered to have a front, a back, a left side and a right side. The XII position is true north.Ī clock position, or clock bearing, is the direction of an object observed from a vehicle, typically a vessel or an aircraft, relative to the orientation of the vehicle to the observer. Points of a 12-hour clock Horizontal sundial of 1812 matching the clock positions in Roman numerals on the outside dial to the points of a compass rose on the inside dial. JSTOR ( June 2020) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed.
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