Opis swiatel nawigacyjnych.pdf

A-9

Description

International

Abbreviation

Example

Remarks

1. FIXED

A light which

appears continuous

and steady and of

constant colour to an

observer whose

position remains

unchanged in relation

to it.

F.W

2. OCCULTING

A light in which the total duration of light in each period is clearly longer than the total duration

of darkness, and the intervals of darkness (eclipses) are usually of equal duration.

2.1. Occulting

An occulting light in

which an eclipse is

regularly repeated.

Oc.W.12s

[2]

2.2. Group Occul-

ting

Oc(..)

A light in which a

number of eclipses

are regularly repea-

ted. The total

duration of light in

each period may be

equal to the total

duration of darkness.

Oc(2)W.13s

[1;1;1;10]

2.3. Composite

Group Occulting

A light similar to a

group occulting light,

except that succes-

sive groups in a

period have different

numbers of eclipses.

The total duration of

light in each period

may be equal to the

total duration of

darkness.

Oc (.. + ..)

1 1 1 4 1 4

Oc(2+1)W.12s

[1;1;1;4;1;4]

3. ISOPHASE

A light in which all

the durations of light

and darkness are

clearly equal.

Iso

5 5

Iso. W. 10s

M-12

June 2004

2 10

1 1 1 10

A-10

Description

International

Abbreviation

Example

Remarks

4. FLASHING

A light in which the total duration of light in a period is shorter than the total duration of

darkness and the appearances of light (flashes) are usually of equal duration.

4.1. Flashing

A flashing light in

which a flash is

regularly repeated at

a rate of less than 50

flashes per minute.

1/ The convention is to

show the length of a flash

to 0.1s

2/ When the length of a

flash is too brief to be

expressed, it is shown as

Fl and the duration of the

eclipse is equal to the

period.

1.5 8.5

10s

Fl.W.10s

[1.5]

4.2. Long Flashing

A flashing light in

which an appearance

of light of not less

than 2s duration

(long

L Fl

flash)

3 7

10s

LFl.W.10s

[3]

regularly repeated.

4.3. Group Flashing

A flashing light in

which a group of

flashes, specified in

number, is regularly

repeated.

Fl(..)

1.1 1 1 1 10

15s

Fl(3)W.15s

[1;1;1;1;1;10]

4.4. Composite

Group Flashing

A light similar to a

group flashing light

except that succes-

sive groups in a

period have different

numbers of flashes.

Fl(..+..)

1 2 1 6 1 6

17s

Fl(2+1)W.17s

[1;2;1;6;1;6]

5. QUICK

A light in which flashes are repeated at a rate not less than 50 flashes per minute but less than

80 flashes per minute.

5.1. Quick

A quick light in

which a flash is

regularly repeated

Q.W

M-12

June 2004

A-11

Description

International

Abbreviation

Example

Remarks

5.2 Group Quick

A quick light in

which a specified

group of flashes,

specified in number,

is regularly repeated.

Q(..)

10s

Q(3)W.10s

An exceptional light

character reserved to

indicate a South cardinal

mark.

15s

Q(6)+LFl.W.15s

5.3

Interrupted

I Q

Quick

A quick light in

which the sequence

of flashes is inter-

rupted by regular

repeated eclipses of

constant and long

duration.

3 7

10s

IQ.W.10s

6. VERY QUICK

A light in which flashes are repeated at a rate of not less than 80 flashes per minute but less than

160 flashes per minute.

6.1. Very Quick

A very quick light in

which a flash is

regularly repeated

V Q

VQ.W

6.2. Group Very

Quick

A very quick light in

which a specified

group of flashes,

specified in number,

is regularly repeated.

V Q(..)

An exceptional light

character reserved to

indicate a South Cardinal

mark

VQ(3)W.5s

10s

VQ(6)+LFl.W.10s

6.3. Interrupted

Very Quick

I V Q

A very quick light in

which the sequence

of flashes is inter-

rupted by regularly

repeated eclipses of

constant and long

duration.

5.1

4.9

10s

IVQ.W.10s

M-12

June 2004

A-12

Description

International

Abbreviation

Example

Remarks

7. ULTRA QUICK

A light in which flashes are repeated at a rate of not less than 160 flashes per minute.

7.1. Ultra Quick

An ultra quick light

in which a flash is

regularly repeated.

U Q

UQ.W

7.2. Interrupted

Ultra Quick

I U Q

5 7

12s

An ultra quick light

in which the

sequence of flashes is

interrupted by

eclipses of long

duration.

IUQ.W.12s

8. MORSE CODE

A light in which

appearances of light

of two clearly

different durations

are grouped to

represent a character

or characters in the

Morse Code.

Mo(..)

1·3 ·5 ·4 ·5 1·3 6

10s

Mo(K)W.10s

[1.3;0.5;0.4;0.5;1.3;6]

9. FIXED AND

FLASHING

A fixed light varied,

at regular intervals,

by a flash of higher

luminous intensity.

F Fl

The flashing light may

have any of the characters

in (4)

5 s

FFl.W.5s

10.ALTERNATING

A light showing

different

W R W R W R W R W

10s

An alternating light may

be occulting, isophase,

flashing or fixed and

flashing

colours

Al.WR.10s

alternately.

R w R w

1 1 1 5

Al.Fl(2)RW.8s

[1;1;1;5]

M-12

June 2004

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