|
type |
contents |
number |
 |
| Visual
Aids to Navigation |
Night Mark |
Lighthouse |
Structures with light established to assist a vessel in
fixing its position or to indicate special point such as landfall point, staring point or
the position of port or breakwater are called "Lighthouse" or "Light
Staff" depending to its shape of structure. |
3,212 |
| Light Staff |
9 |
| Light Beacon |
Structures with light installed on shore reefs or shoals to show existence of obstacle
or route for ships |
263 |
| Projector |
This light shows existence of rock, head of breakwater or reef. |
166 |
| Direction Light |
This light emits three different color beams that are white, red and green. The center
beam of white light indicates navigable water, the green light dangerous area on port, and
red light the same on starboard. |
20 |
| Leading Light |
A pair of lights is used for indication of narrow channel (A ship is led by seeing
these lights on a line). |
54 |
| Light Buoy |
Buoys with light floating at sea, installed to indicate the existence of
obstacles such as shallows, sunken vessel, or to show the fairway |
1,433 |
| Day mark |
Beacon |
Structures which are substantially the same as the
lighthouse, the light beacon and the light buoy, but not emitting light are called
"Beacon" and "Unlighted Buoys" respectively. |
115 |
| Unlighted Buoy |
56 |
| Radio Aids to
Navigation |
Loran-C Station |
Transmits radio signals for ships to fix their position using
a Loran receiver or a Decca receiver. One chain consists of three stations or more. |
4 |
| Decca Station |
8 |
| Differential GPS(DGPS) |
A system to enhance accuracy of GPS (100m) into less than 10m, as well as to broadcast
warning information such as unscheduled outage through radio beacon signal. |
2 |
| Radio Beacon Station |
Medium Wave Radio Beacon Station |
Transmits non-directional signal (medium wave) at specific times so that ships can
obtain the bearing of the station using a direction finder. |
18 |
| Ramark Beacon(Microwave) |
Transmits microwave signal that is appeared onboard radar
display as bright dot line.(Ramark Beacon: The bright dot line indicates the bearing of
the station. /Radar Beacon:The bright dot line indicate the position of the station.) |
45 |
Radar Beacon
(Microwave) |
28 |
Fog Signal Station
(Audible Aids to Navigation) |
Aids to navigation making use of sounds signal are referred to as audible aids to
navigation. Audible aids to navigation emit sound signal to ships notifying position
of a lighthouse, etc in case of poor visibility due to fog, snow, etc. |
23 |
| The Others |
Tidal Stream Signal Station |
Notifies change of tide flow direction and velocity to ships in a channel of strong
tide flow by figure, light signal board, light or radio. |
8 |
| Vessel Traffic Signal Station |
Collects vessel traffic information in the sea areas of
specific traffic route or in congested sea area using some equipment such as radars and
TVs, and provides the information to ships in the sea. |
22 |
total
5,486 |
