Vessel Traffic Separation

Vessel Traffic Separation Schemes have been establish at Tokyo Port.

Terms and Modes of Navigation


1. Terms
In the traffic separation schemes, the following terms are defined in conformity with the definitions of the same terms used in the related laws and regulations.


(1) Traffic separation areas
An area where traffic separation zone or deep water route is established.


(2) Traffic separation zone
An area which separates opposing streams of traffic by the use of separation zone and traffic lane.


(3) Traffic lane
An area within defined limits in which one-way traffic is established.


(4) Separation zone
A zone separating the traffic lanes in which ships are proceeding in opposite directions.


(5) Deep water route
A route with enough clearance of sea bottom to be used mainly by those ships with so deep draught that their safe passage is not feasible outside the route.


2. Modes of Navigation in Traffic Separation Area and its Vicinities
When proceeding a traffic separation area, vessels shall, in principle, follow the rules as stated below:
(The traffic separation schemes in this text do not apply to the traffic separation schemes referred to in Article 10 Paragraph (a) of the International Regulations for Preventing Collisions at Sea.)


(1) A vessel using a traffic separation scheme shall proceed in the appropriate traffic lane in the general direction of traffic flow designated for that lane.


(2) A vessel using a traffic separation scheme shall so far as practicable keep clear of a separation zone.


(3) A vessel using a traffic separation scheme shall normally join or leave a traffic lane the termination of the lane, but when joining or leaving from the side shall do so at as small an angle to the general direction of traffic flow designated as practicable.


(4) A vessel shall avoid crossing traffic lanes. If she is obliged to do so, the vessel shall cross as nearly as practicable at right angles to the general direction of traffic flow designated for that lane.


(5) A vessel not using a traffic separation scheme shall avoid it by as wide a margin as is practicable.


(6) A vessel, other than a crossing vessel, shall not normally enter a separation zone except in cases of emergency to avoid immediate danger.


(7) A vessel navigating in areas near the terminations of traffic separation schemes shall do so with particular caution.


(8) A vessel requiring no passage through a deep water route shall so far as practicable keep clear of the deep water route.


Guide To Navigating In Tokyo Bay


1. Request To All Master Of Vessels


a. Watching on VHF Channel 16
All vessel's movements which are placed within radar service area of the Centre (Tokyo Wan Traffic Advisory Service Centre) are being kept watched all day continuously by the centre's radar. The Master of vessel within radar service area, should always keep watch on VHF Channel 16 for emergency information other than traffic control advice provided from the Centre for ensuring vessel's safe navigation.


b. Listening to MHF 1.665 KHz
The Master of the vessel can get traffic information by broadcast of MHF 1.665 kHz which should be commence at 20 minutes past every hour.


c. Preparing Marine Charts
Most vessels without a marine chart of Tokyo Bay showing the traffic routes have caused accidents or violations of Maritime Traffic Safety Law. Vessels entering or leaving Tokyo Bay should at least prepare the following charts which are:
Chart No. 90 (Tokyo Wan), Chart No. 1061 (Northern Part of Tokyo Wan), Chart No. 1062 (Middle Part of Tokyo Wan), Chart No. 1081 (Uraga Channel), Chart No. H-302A (Tokyo Wan) and Chart No. 302B (Northern Part of Tokyo Wan).


The master of the vessel has to have knowledge of Maritime Traffic
Safety Law
in Tokyo Bay and also the Administrative Guidance which should be observed as same as Navigation Law before entering Tokyo Bay well in advance. The master of the vessel is required to observe the Maritime Traffic Safety Law and Administrative Guidance very strictly.


d. Confirmation of Equipment(s) - (transmitter and receiver) after use
Due to improper handling of VHF Radio (transmitter and receiver), there are many vessels occupying Channel 16 unconsciously in spite of completing use. This condition would interfere with the Centre in communicating with other vessels. Therefore, the master of the vessels should check transmitters position of VHF RADIO which should be put in correct position, after termination of communication.


2. Steering and Sailing Rules


a. Obligation to Navigate in the Traffic Route
Vessels longer than 50 metres should navigate Uraga Suido Traffic Route and Naka-no-se Traffic Route.


Note:
Even vessels shorter than 50 metres, in case of navigating through the traffic route, should follow the Maritime Traffic Safety Law, and The Administrative Guidance, same as vessels over 50 metres.


b. Keep to the Right, One-Way Traffic
- Vessel should navigate starboard side area of the central line of Uraga Suido Traffic Route.
- In Naka-No-Se Traffic Route, vessels should proceed north ward only (One-Way Traffic).


c. Speed Limit
Vessels should navigate by speed less than 12 knots in Uraga Suido Traffic Route and Naka-No-Se Traffic Route.


d. Overtaking Signal
When the vessel intends to overtake other vessels in the traffic routes, the vessel should give the following overtaking signals by whistle:
- Passing on starboard side of the overtaken vessel(s): One (1) prolonged blast followed by one (1) short blast.
- Passing on the port side of the overtaken vessel(s): One prolonged blast followed by two short blasts.


e. Prohibition of Anchorage
Anchoring is prohibited in a traffic route for all vessels.


f. Restriction of Crossing
- No vessels are allowed to cross, or enter or leave by crossing the central line, within the section of Uraga Suido Traffic Route.
- When the vessel crosses the traffic route other than the above, the vessel should cross the traffic route as close as possible to the right angle for the purpose of completing the crossing manoeuvre as fast as possible.


3. Indication of Destination
When vessels of 1000 gross tones or more equipped with whistles intend to navigate a traffic route, they should indicate their destinations by giving signals of the International Code Flag by day or on whistles by night. Above signals are described in the Maritime Traffic Safety Law.


4. Caution for Stranding
Vessels proceeding southward in Uraga Suido Waterway Traffic Route and other areas have to keep care for stranding accidents on the Daisankaiho, especially in weather conditions of north and northeast winds. All Master of vessels should take care that vessel's manoeuvring performances may be effected by currents and winds near the above mentioned areas.


5. Tokyo Wan Traffic Advisory Service Centre
A. Outline of the Services


Regular Broadcast
1. Description
- *Situation of marine accidents, etc.
- *Restriction on navigation in Traffic Route
- Evacuation Warnings
- *Information of anchored vessels
- *Information to prevent anchors from dragging
- *Schedule of huge vessels entering into Uraga Suido Traffic Route and Naka-no-Se Traffic Route.
- Vessels crossing Uraga Suido Traffic Route
- Navigation of vessels of deep draft
- Information of the vessels with a long towline
- Situation of navigating vessels in Traffic Route
- Situation of fishing in Traffic Route
- *Weather warnings and
- *Weather information
- *Change of aids to navigation, etc.
- Construction works, etc.
- Obstruction for navigation
- Other useful information for safe navigation


2. Method of Communication
- Broadcast by voice frequency 1.665 kHz


3. Remark(s)
You can listen to this broadcast on the radio. Regular broadcast in Japanese; between 00 and 15, 30
and 45 minutes every hour. Regular broadcast in English (items above marked *) between 20 and 30
minutes every hour. The following are the other broadcasts on the same frequency in Japanese:

- "Keihin Harbour Radar":
1.
Between 45 minutes and 52 minutes 30 seconds every even numbered hour from 06:00 to 19:00
hours for Yokohama-Ku.
2. Between 52 minutes 30 seconds and 00 minutes every even numbered hour from 06:00 to 19:00
hours for Kawasaki-Ku.


- "Tokyo jusan Goti":
1.
Between 45 minutes and 52 minutes 30 seconds every odd numbered hour from 05:00 to 18:00
hours fro Tokyo-Ku.


- "Chiba Harbour Radar":
1.
Between 52 minutes 30 seconds and 00 minutes every odd numbered hour from 05:00 to 18:00 hours for Tiba-Ku.


4. Applicable Vessels
- All vessels


Interim Broadcast
1. Description
- Restriction on navigation in Traffic Route
- Situation of large scale marine accidents and so on in Tokyo Wan
- Other emergency information


2. Method of Communication
- Broadcast by voice frequency 1.665 kHz


3. Remark(s)
- Upon obtaining new information, it is provided in English and Japanese


4. Applicable Vessels
- All vessels


Telephone Service
1. Description
Huge vessels and particular vessels
- Restriction on navigation in Traffic Route
- Schedule of huge vessels entering into Uraga Suido Traffic Route and Naka-no-Se Traffic Route


Weather Information
- Wind direction and speeds at the following points; Tokyo Jusan Goti, honnoku, Kannon Saki, Turugi Saki, Sunosaki, and kazehayasaki of Izu Osima.
- Atmospheric pressure and visibility at Kannon Saki


2. Method of Communication
Huge vessels and particular vessels
- Telephone 0468 43 0621 (Japanese Only)


Weather Information
- Telephone 0468 44 4521 (Japanese Only)


3. Remark(s)
- Available by telephone and vessel's telepphone at all times.


4. Applicable Vessels
- All vessels


Individual Information
1. Description
- Position of vessel requested
- Movement of other vessels (movement of designated vessels, movement of vessels within a certain area under limited visibility)
- Situation of anchoring vessels within specified areas


2. Method of Communication
- VHF RAdio telephone Channel 14, 16 and 22
- Telephone 0468 43 8622 or 8624


3. Remark(s)
- Information is provided upon inquiry from a vessel.


4. Applicable vessels
- Vessels capable of communication within radar service area


Special Information
1. Description
- Warning when danger of collisioni is expected
- Warning for proper stearing and sailing
- Warning for avoiding danger when an accident has occurred or visibility is limited
- Others


2. Method of Communication
- VHF Radio Telephone Channel 14, 16, 22


2a) Call name or address
- "Tokyo Martis"


3. Remark(s)
- Information is provided to a vessel from the Centre for avoiding danger


4. Applicable Vessels
Within radar service area:
- Vessels of more than 10.000 gross tons
- Vessels carrying dangerous cargo
- Vessels towing or pushing long objects


Traffic Information
1. Description
- Movement of vessels
- Condition of weather
- Reference for proper stearing and sailing
- Situation of construction works, etc.


2. Method of Communication
- VHF Radio Telephone Channel 14, 16, 22


2a. Call name or address
- "Tokyo Martis"


3. Remark(s)
- In principle, information is provided on received position


4. Applicable Vessels
- Vessels notifying positions



B. Notification of Traffic Route
In order to ensure smooth traffic in Uraga Suido Traffic Route and Naka-no-Se Traffic Route, the Centre is conducting traffic control. Notification should be given to the "Chief of the Tokyo Wan Traffic Advisory Service Centre" in the following way:


Vessels Required To Notify Time of Notification

Vessels of 10.000 gross tons or more
Vessels towing or pushing long objects
By noon the day before the estimate date of entering the traffic route.
Vessels of less than 10.000 gross tons carrying dangerous cargoes. By three (3) hours before the estimated time of entering the traffic route.

6. Administrative Guidelines
The following administrative guidelines apply to vessel traffic in the Uraga Suido Traffic Route, Naka-no-Se
Traffic Route and adjacent sea areas.


Navigation in the vicinity of the gate way of each traffic route
(a)
A vessel which is proceeding in the vicinity of the north gate way of Naka-no-Se Traffic Route from Kisarazu Port should pass North of Kisarazu Port Offing Light Buoy (35 deg. 24.9' N; 139 deg. 47.2' E, approximately).


(b) A vessel outward which is passing off Kawasaki from Tokyo and its neighborhood should pass Kawasaki Koro Light Buoy No. 2 on her starboard side the distance of 1.000 m or more from the buoy.

(c) A vessel passing off Tsurugi Saki and entering Uraga Suido Traffic Route should not take such action as large and sudden alteration of her course which might obstruct the inward traffic flow of the traffic route.


(d) A vessel passing off Tsurugi Saki and entering Uraga Suido Traffic Route should proceed in the middle of the entrance of Tokyo Bay so as to avoid crossing the outward traffic flow in the vicinity of the gate way of the route.


Naviagation in the Western Area of Naka-no-Se
(a)
A vessel proceeding southward in the west of Naka-no-Se should keep the distance of 1.000 m or more from a line connecting Tokyo Wan Naka-no-Se Light Buoys B, C and D.


(b) Northbound vessels of 17 metres draft and over passing through the Naka-no-Se west zone in Tokyo Bay should sail at a distance of at least 400 metres from the line that connects each of the lighted buoys A, B, C and D place at Naka-no-Se in Tokyo Bay. Southbound vessels are instructed to sail through the
zone located at a distance of at least 1.000 metres from the line that connects each of the lighted buoys A, B, C and D place at Naka-no-Se in Tokyo Bay. Northbound vessels should therefore sail, keeping a safe distance from southbound vessels.


(c) Where possible, vessels intending to anchor in the Naka-no-se west zone should avoid anchoring in the zone within one (1) nautical mile from the line that connects the lighted buoys A, B, C and D placed at Naka-no-se in Tokyo Bay.


Taking a Pilot On Board
Taking pilots on board is compulsory for vessels of 10.000 gross tons or more. Foreign flag vessels less than 10.000 gross tons are strongly advised to take a pilot on board unless it is not possible.


Restrictions on overtaking
Huge vessels or other particular vessels as prescribed by the Maritime Traffic Safety Law, and vessel of 10.000 G/T or more should, if the circumstances of the case admit, avoid overtaking a vessel of 500 G/T or more in the traffic routes.


Preparation of Emergency Fire Wires
Vessels carrying dangerous cargo and navigating within Tokyo Bay must provide the following emergency fire wire and auxiliary rope on their bow and stern. Further, fire wire on board small vessels carrying dangerous cargo must be prevented from falling into the sea.


(a) Fire wire should be wire rope including a ring-shaped part also called an eye on the end and should be strong enough for the vessel to be towed by another vessel and long enough to reach the surface of the water. The wire is to be kept coiled on the deck of the vessel.


(b) Auxiliary ropes should be strong enough to draw out the fire wire to the water surface. The rope should include a loop-shaped part also called an eye on the end and should hang down by the board as close to the water as practical without impeding safe navigation.


Restrictions on Use of Auto-pilot
A vessel navigating in Tokyo Bay should not use auto-pilot.


Restraint in Crossing Traffic Routes
Vessels of more than about 10.000 gross tons leaving Yokosuka Port and crossing the Uraga Suido Taffic Route or northbound vessels of more than about 10.000 gross tons cutting across the Uraga Suido Traffic Route to enter Yokosuka Port should exercise self-restraint in crossing this traffic route from 16:00 to 20:00 JST, during which period vessel traffic is most congested.

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