Provision of Maritime Traffic Information
Nagoya-Port Vessel Traffic Service Center

1.General Information

Regular broadcasts, special broadcasts and internet home pagemainly provide the information listed below.



Regular Broadcast

Internet Home Page

Present and scheduled control signals

Information on the present state of control signals and the controlled schedule for a certain period after the time of broadcasting.

Waterway entry schedule of controlled vessels

Information on the waterway entry schedule of controlled vessels during a certain period after the time of broadcasting.

Construction work, etc.

Information on major works, operations, events, and navigational obstacles in the port.

Weather warnings and Weather advisory

Information on weather warning and weather advisory is issued.

Meteorological condition

Information on the direction and the speed of wind at the Storm Tide Break- water East Signal Station and on the visibility at the Center.

Condition of aids to navigation

Information on the new installation, alteration, abolition, etc. of aids to navigation in the Port of Nagoya and its vicinity.

Special broadcast

Traffic restriction, prohibition and accident

Information on navigation restriction and prohibition in the port and large scale accident is provides with priority over regular broadcasts.

2.Individual Information

At the request of a vessel, the Center provide information on your vesselfs position and the movement of other vessels within the port (as a rule).

(1) gInformation on your vesselfs positionh
a. It is necessary to report your vesselfs position in advance (see " Position Report " page).
b. Your vesselfs position is informed in terms of bearing and distance (nautical miles) from one of the points listed below to the center of your vesselfs echo on the radar display.


¥Nagoya North Signal Station

¥Port of Nagoya Storm Tide Breakwater East Signal Station

¥Port of Nagoya Storm Tide Breakwater West Signal Station

¥Ise Wan Light Beacon

¥Ise Wan Sea Berth

(2) gInformation on movements of other vesselsh

First, please report your vesselfs position to the Center (unless your have already made your position report).

b. Next, please inform the approximate bearing and distance from your vessel, which you need information.
c. The Center informs the other vesselfs position, course and speed. In the case of vessel, which have reported their positions, the Center can also inform their names, gross tonnages and berth names.
d. In limited visibility, the Center inform the movements (distance, course and speed) of vessels (approaching vessels, etc.) witch might affect your safe navigation.

Example: gThe vessel proceeding at ››› knots along course ››› degrees at a distance of ››› nautical miles with a bearing of ››› degrees from you is gradually approaching you.h

3.Specific Information

The Center providers the radar-based information below to vessels which have reported their own positions in the port (as a rule).
Specific information may also be provided at times to vessels which have not reported their positions if communication with the Center is possible.

(1) Information for proper steering and sailing

This information is to be provided when steering and sailing in the passage is improper.

Example: gYour vessel is proceeding outside the passage. Move into the passage after confirming safety.h

(2) Information for avoiding emergency situation

This information is provided for those vessels which are in restricted visibility, or are likely to proceed into approach such dangerous areas as the scene of an accident, shallow water, etc.

4.Information Signals

¥The Center provides information on the movement of vessels larger then a certain size in the sea area near the passage connection by information signal board (within the circle whose center is located at a distance of 1,200 m and angle of 191 degrees from Kinjo Signal Station and which has a radius of one nautical mile).
¥A traffic control signal board and a information signal board (" Passages and Controlled Waterways " pages
) are set up at the Kinjo Signal Station (Center Tower).

On the information signal board, frames enclosing the signals are lit to make identification easier.

¥Types and meanings of information signals are as follows.

(1) Types and meanings of signals

Signal Type



East Passage

A vessel of 5,000 GT or more is proceeding toward the

West passage

From the

North Passage.

Kinjo Zone




North Passage

A vessel of 5,000 GT or more is proceeding toward the

West passage

From the

East Passage.

Kinjo Zone




North Passage

A vessel of 5,000 GT or more is proceeding toward the

East passage

From the

West Passage.

Kinjo Zone




North Passage

A vessel of 500 GT or more is proceeding toward the@

East passage

From the

Kinjo Zone.

West passage



Kinjo Zone is the area north of the line extending from the south end of kinjo pier to the southeast end of the West-4 Section.

(2) Examples of information signals

(Example 1)

A vessel of 500 GT or more is proceeding toward the East Passage from the Kinjo Zone.

(Example 2)

A vessel of 5,000 GT or more is proceeding toward the West Passage from the North Passage.

(Example 3)

Only the frame is displayed - No controlled vessel is navigating in the control area.

When information can not be provided due to mechanical failure, etc., neither letters/nor frames are displayed.

Matters to be attended to warnings concerning use of information supplied by the Center.


Information provided by the Center aims at helping the master to make proper decision, and not directly guiding the vessel.


It is sometimes feared that you can not get special information because it is difficult to predict all dangers to passage navigation by radar alone. The Center may also not be able to information when VHF telephone is congested or on-board provide telephone line is busy.

¥ With radar, there is some mechanical error in measuring bearings and distances.