Fog Detector Light —HP Fog Light —» IP General

1

o A

Position of fog signal. Type of fog signal not stated

t Fog Sig

451

451.2

452.8

N1

Types of Fog Signals, with Abbreviations

10

Explos

Explosive

fGun

452.1

N3

N10

11

Dia

Diaphone

452.2

N9

12

Siren

Siren

452.3 N11

13

Horn

Horn (nautophone, reed, tyfon)

fNauto fE.F. Horn f Tyfon fReed

452.4

N8

N12-13a

N16

14

Bell

Bell

452.5

N14

L3

15

Whis

Whistle

452.6

N15

L4

16

Gong

Gong

452.7

N17

L3a

Examples of Fog Signal Descriptions

20

A FI.3s70m29M v Siren Mo(N)60s

X

Siren at a lighthouse, giving a long blast followed by a short one (N), repeated every 60 seconds

452.3

453.3 NI N11

21

^ABell

X

Wave-actuated beli buoy The provision of a legend indicating number of emissions, and sometimes the period, distinguishes automatic beli or whistle buoys from those actuated by waves

452.5

453

454.1 | L3 NI 4

22

/ Q(6)+LFI.15s ..iM- Horn(1)15sWhis v YB^

X

Light buoy, with horn giving a single blast every 15 seconds, in conjunction with a wave-actuated whistle

Reserve fog signals are fitted to certain buoys Only those actuated by waves are charted

452.4

453,1

454.3

L4

N1

N13

ł The Fog Signal symbol may be omitted when a description of the signal is given