UN/LOCODE: JPYOS📍 Japan
Port of Yokosuka (UN/LOCODE JPYOS)
❖ Coordinates: 35.2800°N, 139.6700°E
❖ Time Zone: Asia/Tokyo
❖ UN/LOCODE: JPYOS
## About the Port
Yokosuka (UN/LOCODE: **JPYOS**) is a strategic deep‑water port located on the southwestern coast of the Miura Peninsula in Kanagawa Prefecture, Japan (35.28° N, 139.67° E). Sitting within the Japan Standard Time zone (Asia/Tokyo, UTC +9), the port serves both commercial shipping and the Japan Maritime Self‑Defense Force (JMSDF) base that shares its name. Yokosuka’s natural harbor benefits from a protected anchorage, a tidal range of less than 0.5 m, and year‑round ice‑free conditions, making it one of the most reliable gateways to the Tokyo Bay megaregion.
The port’s jurisdiction falls under the Kanagawa Prefectural Government and the Ministry of Land, Infrastructure, Transport and Tourism (MLIT). Approximately **3.7 million TEU** (twenty‑foot equivalent units) of container traffic, **1.2 million tons** of bulk cargo, and **800,000 tons** of break‑bulk goods passed through Yokosuka in 2023, positioning it among the top 15 Japanese ports by cargo volume. Its proximity—roughly 30 km—to central Tokyo and the industrial clusters of Yokohama and Kawasaki enhances intermodal connectivity via expressways, high‑speed rail, and the Greater Tokyo freight railway network.
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## History
### Early Foundations (1850s‑1910)
Yokosuka’s maritime significance dates to the late Edo period, when the Tokugawa shogunate established a small dockyard to support coastal trading vessels. The 1854 Treaty of Kanagawa forced Japan to open several ports to foreign powers; while Yokosuka was not initially designated, the site quickly attracted British and French naval engineers who recognized its defensible geography.
### Naval Ascendancy (1910‑1945)
In 1910, the Imperial Japanese Navy (IJN) formalized the **Yokosuka Naval Arsenal**, converting the dockyard into a full‑scale shipbuilding and repair facility. During World War II the yard produced a range of warships, including the famed cruiser *Mogami*. The port endured heavy Allied bombing, but post‑war reconstruction efforts, backed by the U.S. Occupation forces, restored its capacity for both naval and civilian use.
### Post‑War Commercial Expansion (1950s‑1990s)
The 1950s saw the Ministry of Transport designate Yokosuka as a **regional commercial port**. Investment in modern quay walls, container cranes, and refrigerated storage enabled the port to handle the burgeoning post‑war Japanese economy. In 1972 the port was integrated into the “Keihin Industrial Belt” logistics corridor, linking it directly to the steel mills and automobile factories of the Tokyo–Yokohama–Kawasaki triangle.
### 21st‑Century Modernization (2000‑present)
A major redevelopment program launched in 2005 introduced automated container handling systems, deepening of the approach channel to 13 m, and a new **smart‑port traffic management platform**. In 2018 the port achieved ISO 9001 and ISO 14001 certifications, underscoring its commitment to quality management and environmental stewardship. The latest expansion, completed in 2022, added a 450‑meter berth equipped for ultra‑large container vessels (ULCVs) up to 22 m draft.
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## Infrastructure & Facilities
### Berths and Quay Structures
- **13 deep‑water berths** (8 m to 13 m draft) serving container ships, Ro‑Ro vessels, and bulk carriers.
- **2 dedicated naval berths** (protected by reinforced seawalls) for JMSDF destroyers and submarines.
- **1 multi‑purpose terminal** (450 m length) with shore‑side cranes rated at 45 t lifting capacity.
### Cargo Handling Equipment
- **30 Super‑Post-Panamax container cranes** (45 t, 22 m outreach) enabling simultaneous loading of two 40‑foot containers per cycle.
- **15 gantry cranes** for handling break‑bulk and project cargo.
- **12 reach stackers** and **9 forklift tractors** for yard operations, coordinated through an automated terminal operating system (TOS).
### Storage and Logistics
- **120 hectares** of container yard space, subdivided into dry, refrigerated (100 TEU capacity), and hazardous‑goods zones.
- **3 bulk terminals** (coal, grain, and iron ore) with conveyor belts and shiploaders up to 4,500 t/h.
- On‑site customs clearance, bonded warehouses, and a dedicated **cold‑chain logistics hub** serving perishable imports from the Pacific Rim.
### Intermodal Connectivity
- Direct access to **National Route 1** and **Expressway 16**, supporting 24‑hour truck operations.
- **Keihin Line** freight rail spur (2 km) links Yokosuka to the Kansai–Tokyo freight corridor, enabling double‑stack container transport.
- A **dedicated inland waterway terminal** on the Tama River, facilitating barge traffic to the inland industrial parks of western Tokyo.
### Technology & Sustainability
- **Port Community System (PCS)** integrating customs, shipping agents, and logistics providers for real‑time data exchange.
- **Solar‑powered LED lighting** on the quay (2 MW peak output) and a **shore‑power (cold‑iron) supply** for docked vessels, reducing emissions by an estimated 12 % annually.
- **Marine pollution monitoring** via a network of IoT buoys, reported to the Japan Coast Guard.
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## Economic Importance
Yokosuka port is a linchpin of the **Keihin Industrial Region**, contributing an estimated **¥1.4 trillion** (≈ US$10 billion) to the local economy each year. Its diversified cargo mix cushions regional supply chains against sector‑specific shocks.
- **Manufacturing:** The port supplies critical inbound raw materials—steel billets, automotive components, and petrochemical feedstocks—to factories in the adjacent Kawasaki and Yokohama zones.
- **Export‑driven growth:** Finished automobiles, high‑tech electronics, and precision machinery are the primary outbound commodities, benefitting from Yokosuka’s proximity to the Tokai‑Ginza supply chain.
- **Employment:** Over **9,800** direct jobs (stevedores, engineers, customs officials) and **22,000** indirect positions are linked to port operations, representing a significant share of Kanagawa’s labor market.
- **Strategic defense:** The co‑located JMSDF base ensures rapid deployment of naval assets, reinforcing Japan’s maritime security posture in the Pacific.
Internationally, Yokosuka’s reliable turnaround times (average **18 hours** for container vessels) and high service reliability score (96 % on‑time performance) boost Japan’s trade competitiveness, especially in time‑sensitive high‑value goods such as semiconductors and pharmaceuticals.
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## Trade Routes & Major Cargo
### Core Shipping Lanes
| Region | Main Shipping Line | Vessel Types | Frequency (2023) |
|--------|-------------------|--------------|------------------|
| **East Asia** (China, South Korea) | Mitsui O.S.K. Lines, Evergreen | Pan‑Pan & Feeder | 84 sailings/month |
| **Southeast Asia** (Vietnam, Singapore, Malaysia) | NYK Line, HMM | Pan‑Pan, ULCV | 61 sailings/month |
| **North America** (Los Angeles, Seattle) | Maersk, CMA CGM | ULCV, Post‑Panamax | 28 sailings/month |
| **Europe** (Rotterdam, Hamburg) | OOCL, ZIM | Container, Reefer | 12 sailings/month |
| **Australia/New Zealand** | ONE, K Line | Feeder, Ro‑Ro | 9 sailings/month |
These routes integrate Yokosuka into the **Asia‑Pacific** and **Trans‑Pacific** trade corridors, facilitating a flow of **≈ 25 million TEU** annually across the Pacific and a smaller but growing **Euro‑Asian** segment.
### Principal Cargo Categories
| Cargo Type | Approx. 2023 Volume | Key Import/Export Partners |
|------------|--------------------|----------------------------|
| **Containerized Goods** (electronics, automotive parts) | 3.2 million TEU | China, South Korea, USA |
| **Automobiles & Parts** (finished cars, engines) | 410,000 tons | USA, Germany, Mexico |
| **Petroleum Products** (LPG, diesel) | 215,000 tons | Saudi Arabia, UAE |
| **Dry Bulk** (coal, iron ore) | 720,000 tons | Australia, Canada |
| **Refrigerated Cargo** (fresh seafood, medicines) | 58,000 tons | Norway, Chile |
| **Project Cargo** (machinery, plant equipment) | 92,000 tons | China, Singapore |
The port’s **Ro‑Ro terminals** accommodate over **150,000** vehicle units annually, while its **bulk terminals** handle a combined **≈ 1 million tons** of raw materials, underscoring a balanced cargo portfolio.
### Emerging Trade Trends
- **Green Logistics:** Growing demand for low‑carbon shipping fuels has led Yokosuka to pilot **bunker‑supply of LNG** and **shore‑power** for vessels calling at the port.
- **Digital Trade:** Adoption of blockchain‑based bills of lading through the Port Community System reduces paperwork by 30 % and accelerates customs clearance.
- **Supply‑Chain Resilience:** Post‑COVID‑19 reshoring initiatives in Japan have increased domestic sourcing of critical components, prompting a shift toward **intra‑regional feeder services** that use Yokosuka as a consolidation hub.
For further technical details, consult the **MLIT Port Statistics** database and the **Port of Yokosuka official site**.
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*Keywords: Yokosuka port, JPYOS, Kanagawa maritime, Japan container terminals, Pacific trade routes, Japanese port infrastructure, Yokosuka cargo handling, Yokosuka economic impact*
Port Intelligence
UN/LOCODE
JPYOS
Country
Japan
Province / Region
Kanagawa
Latitude
35.280000
Longitude
139.670000
Timezone
Asia/Tokyo
Nautical Map (OpenSeaMap)
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Frequently Asked Questions
What is the UN/LOCODE for Port of Yokosuka?
The official UN/LOCODE for Port of Yokosuka is JPYOS.
Where is Port of Yokosuka located?
The Port of Yokosuka is located in Japan, Kanagawa. Its coordinates are 35.2800°N, 139.6700°E.
What time zone is Port of Yokosuka in?
Port of Yokosuka operates in the Asia/Tokyo time zone.
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About the World Port Index
This data is sourced programmatically. The UN/LOCODE is the official geographic coding scheme used by the United Nations for trade and transport locations.
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