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Phrases to remember:

1. a light is exhibited from … огонь выставлен на …

2. it’s difficult to distinguish трудно различить (распознать)

3. keep alignment in sight держать по створу

4. keep lights in line держать огни в створе

5. proceed on the alignment следовать по створу

6. the alignment of these lights leads … створ этих огней ведет к (в)

7. to be in poor repair быть в неисправном состоянии

8. whence course should be оттуда курс должен быть

adjustedtowards… установлен по направлению

Memorize the translation of the following sentences:

1. A fog signal is sounded from the lighthouse. Туманный сигнал подается с

маяка.

2. All bearings refer to the true compass Все пеленги даются истинные и

and are measured clockwise. отсчитываются по часовой

стрелке.

3. Leading lights in line bearing 164º lead Створные огни на линии

into the harbour. пеленга 164ºведут в гавань.

4.Light-vessels are liable to be withdrawn. Плавмаяки могут быть убраны

со штатных мест.

5.The limits of sectors should Нельзя полагаться на

not be relied upon. точность границ секторов.

6. The pierheads are 165 m apart. Оконечности пирсов находятся

на расстоянии 165 м друг от

друга.

7. The position of the light-floats can На положение плавучих

not be depended on. светящихся знаков нельзя

полагаться.

Explanatory Note

Lights exhibit a distinctive appearance by which they are recognized, e.g. Fixed, Flashing, etc. Those properties of their appearance by which they are distinguished are referred to as the Character orCharacteristics of the light. The principal characteristics are generally the sequence of intervals of light and darkness exhibited and in some cases the sequence of colours of light exhibited. Lights, which are exhibited without interruption or change of characteristics are calledFixed lights.

Normally, all lights other than fixed lights exhibit a sequence of intervals of light and darkness, the whole sequence being repeated identically at regular intervals. Such lights are called Rhythmic lights, and the time taken to exhibit one complete sequence is called the Period of the light. Each element of the sequence (e.g. a flash, an eclipse) is called a Phase.

Rhythmic lights, which exhibit different colours during each sequence are called Alternating lights. The period of an alternating light is the time taken to exhibit the complete sequence, including all changes of colour.

Elevation is the vertical distance between the focal plane of the light and the level of Mean High Water Springs or Mean Higher High Water, whichever is given in Admiralty Tide Tables.

Range. – Luminous range is the maximum distance at which a light can be seen at a given time, as determined by the intensity of the light and the meteorological visibility prevailing at that time; it takes no account of elevation, observer’s height of eye or the curvature of the earth.

Nominal range is the luminous range when the meteorological visibility is 10 sea miles.

Meteorological visibility is the greatest distance, at which a black object of suitable dimensions can be seen and recognized against the horizon sky, or, in case of night observations, could be seen and recognized if the general illumination were raised to the normal daylight level.

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