Notice of Construction Area and Navigation Restriction as Part of Port ofTokyo Bay Port Road Nanboku Line Submerged Caisson Construction
April 28, 2020 to June 30, 2020
● Offshore construction will be carried out in the Chubo North Fairway as noted below.
● Submerged caissons are installed. Please exercise sufficient caution for vessels which will be navigating the water in the area.
● Please note, vessels of 500 gross tons or more exiting from the slit will resume using previous navigation routes (EastPassage) from midnight April 29, 2020 (* Note).
* Note: This may change depending on construction progress.

Details

Figure 1 Guide Diagram

1 Overview(1) Construction details (Refer to Figures 1 and 2)

Nanboku Line Safe
Figure 2

品 Navigation Information
川 Management Office
ふ (10 Go Chi Signal Station)
Shinagawa頭 Backfilling work (Central breakwater side)

Wharf

１５Go号地15Chi
１０号地その２
10 Go Chi (2)
No.6

品
川区

No.513１３号地
Go chi

中央防波堤
立地
Central内側埋
BreakwaterInner Reclaimed Land

New Sea Level
Processing
新海面処分Site場
建設工事区域Construction
Area

No.7

路
航西京
東

京浜２区

No.6

No.5Keihinjima
京浜島

No.4No.3

During the following periods, navigation and mooring will be prohibited within thecentral breakwater side construction area for all vessels other than those engaged
in the construction and those expressly authorized by the harbormaster.
Note that the periods may change depending on construction conditions and status.

川崎市(1) The work ship group will be moored within the central breakwater side
construction area during the night.
When stopped during the night, in addition to displaying the lamps
required by law, flashing indicators (1 yellow light flash per 4 seconds)
will be installed on the 4 corners of the work ship group.
(2) Patrol boats
In principle, 2 boats each will be assigned to the 10 Go Chi side andCentral Breakwater side construction work areas during work hours(during the day).
In addition, for the Central Breakwater construction work area(navigation restricted), 2 patrol boats (Marine VHF radio signalingcapable) will also be assigned after work is completed (nighttime) topatrol the area around the work area providing information and caution.
(Refer to Figures 2 and 4)* Patrol boats can be reached using Marine VHF radio (ch. 16).
(Contact name: Nanboku Line Patrol Boats)(3) Construction Vessel Markers
Construction vessels will display the lights, beacons, symbols andmarker flags required by law. (Refer to Figure 5)(4) A "Nanboku Line Safe Navigation Information Management Office" willbe established and carry out the following. (Refer to Figure 1)• Provision of information, etc. to standard vessels, etc.
• Collection of information on vessel traffic around construction area
• Provision of information on construction ship and patrol boat
movement, caution, etc.

Revetment restoration(Foundation construction)

浮島B

13 Go chi (2)Legends

Light
灯 標beaconsC

灯浮標 buoys
ALighted

Beacon Height:灯高 ：Approximately
6.9約6.9ｍ
m

Light Signal
灯質 ：Characteristics:

1 flash４秒１閃光per
4 seconds

BeaconHeight:灯
高 ：Approximately
2.2約２．２ｍ
m

Light Signal
灯質 ：Characteristics:

1 flash４秒１閃光per
4 seconds

BeaconHeight:灯
高 ：Approximately
2.1約２．1ｍ
m

Light
灯 Color:色：

Yellow
黄色

Painted Color: ：標体塗色

Yellow
黄色

Light
灯 Color:色：

Yellow
黄色

PaintedColor: ：標体塗色

Yellow
黄色

Light
灯 Color:色：

Yellow
黄色

PaintedColor: ：標体塗色

Yellow
黄色

Effective
実効光度
Brightness:
Visible光達距離Distance:：

Approximately
14 約１４ｃｄ
cd
Approximately
約５．５ｋｍ
5.5km

Top Mark:標 ：頭X type
Ｘ型

Effective
実効光度
Brightness:
Visible光達距離Distance:

：

14 cd
１４ｃｄ

Top
頭 Mark:標X type
X：

14 cd
１４ｃｄ

Top
頭 Mark:標：Approximately
約５．５ｋｍ
5.5km

Effective
実効光度
Brightness:
Visible光達距離Distance:：

Approximately
約５．５ｋｍ
5.5km

SynchronizedFlashing Type同期点滅方式：―

SynchronizedFlashing Type同期点滅方式

頭標
Hanging
灯ろうLantern
Radar Reflector
ﾚｰﾀﾞｰﾚﾌﾚｸﾀ

Central Breakwater - Inner
Reclaimed LandE

Construction area(navigation restricted)（航泊禁止）
Patrol Boats(S Type Deployed 24h)
Patrol Boats(N Type Deployed 24h)
Patrol Boats(S Type Deployed 8h)
Patrol Boats(N Type Deployed 8h)

Point
地点

Aイ
B
ロC
ハ
D
二E
ホ

Starting
起点point
From 10 Go Chi
10号地信号所から
Signal Station
From
point A
イ地点から
From
point
ロ地点からB
From
point C
ハ地点から
Frompoint D
二地点から

Direction
方位Distance
距離Latitude緯度Longitude
経度

140 degrees 00
140度00分
minutes
325 degrees 53
325度53分
minutes
235 degrees 33
235度33分
minutes
139 degrees 47
139度47分
minutes
123 degrees 58
123度58分
minutes

946m
327m
304m
233m
67m

35 degrees 36 minutes
35度36分29.0秒
29.0 seconds
35 degrees 36 minutes
35度36分37.8秒
37.8 seconds
35 degrees 36 minutes
35度36分32.2秒
32.2 seconds
35 degrees 36 minutes
35度36分26.4秒
26.4 seconds
35 degrees 36 minutes
35度36分24.5秒
24.5 seconds

139 degrees 48 minutes
139度48分03.9秒
03.9 seconds
139 degrees 47 minutes
139度47分56.6秒
56.6 seconds
139 degrees 47 minutes
139度47分46.6秒
46.6 seconds
139 degrees 47 minutes
139度47分52.6秒
52.6 seconds
139 degrees 47 minutes
139度47分56.2秒
56.2 seconds

Hanging Lantern

φ0.9m

Approximately 2.1m

約2.1m

約2.2m

TopMark
頭標

約7m

灯ろう
Hanging
Lantern
TopMark
灯ろう頭標ﾚｰﾀﾞｰﾚﾌﾚｸﾀ
Radar Reflector
ﾚｰﾀﾞｰﾚﾌﾚｸﾀ

Approximately 2.2m

SynchronizedFlashing Type同期点滅方式型

D◆ Construction area (navigation restriction) (Refer to Figure 2)
Ocean surface area enclosed by shore and line connecting each pointfrom coordinate A to coordinate E

灯標（陸上部）Lightbeacons (On-land)

1 flash４秒１閃光per
4 seconds：

AWork area
Light beacon C for indication of navigablearea
Light beacons for clear indication ofconstruction area (on-land section)
Lighted buoys A for clear indication ofconstruction area
Anchor buoy

Light Signal
灯質 ：Characteristics:

Backfilling work
(Caissons 1, 2, and 3CWestbound
Prohibition Line

Figure 3 Signs and markings for clear indication of construction area(navigation restriction) [Light beacons and lighted buoys]

約6.9m

No.1

Nanboku Line Safe
Navigation Information
多Management Office 摩川

3 Safety Measures

Approximately 6.9m

Figure 2 Construction AreasNo.2

東京国際空港10 Go Chi (2)April 28, 2020 to June 30, 2020

φ1.6m

No.2No.1

No.8

2 Navigation restriction period

灯ろう
ﾚｰﾀﾞｰﾚﾌﾚｸﾀ

No.4

中央防波堤
CentralBreakwater - No.3
外側埋立地
OuterReclaimed
Land

Oi ふ頭
WharfそのNo1１
大井(2) Installation of signs and markings for clear indication of construction area
(Refer to Figures 2 and 3)
Light beacons and lighted buoys will be setup to clearly indicate the construction
area.

：路航
東
京東

Rock muck, etc. will be injected on the submerged caisson side and peak aftersubmersion.
Rock muck, etc. injection will be carried out by self-propelled grab barges andtremie ships.
However, because the tremie ships cannot be used in areas near revetments,
direct injection will be carried out by self-propelled grab barges.
The injected backfilling material will be evened out by divers in some of theareas where the required water depth passage and anchorage cannot bemaintained.
 Revetment restoration (10 Go Chi (2) side)
In order to construct the end of the submerged tunnel section, part of theremoved revetments will be restored.
Foundation riprap injection will be carried out by self-propelled grab barges
under instruction by divers, and after injection of foundation riprap, preliminary
and final evening out will be carried out by divers.

φ1.6m

Figure 4 Patrol Boat Indications

Figure 5 Marker Flags

Blue Blinking Lamp

臨港道路南北線(60X90cm, 90X120cm)

Inquiries

Ministry of Land, Infrastructure, Transport and Tourism,
Kanto Development Bureau
Port of Tokyo OfficeTel.: 03-5534-1367
http://www.pa.ktr.mlit.go.jp/tokyo/index.htm

Inquiries related to this leaflet
Nanboku Line Safe Navigation Information Management OfficeTel.: 03-5579-6638
namboku-jokan@soleil.ocn.ne.jp