50 |
 |
Lights exhibited only when specially needed (for fishing vessels, ferries) and some private lights |
 |
51 |
 |
Daytime light (charted only where the character shown by day differs from that shown by night) |
|
52 |
 |
Fog light (exhibited only in fog, or the character changes in fog) |
|
53 |
|
Unwatched (unmanned) light with no standby or emergency arrangements |
 |
54 |
 |
Temporary |
|
55 |
 |
Extinguished |
|