Yokosuka: Boat Trip to an Uninhabited Island

Yokosuka’s Sarushima is the unusual centerpiece here: an uninhabited island in Tokyo Bay where forest paths lead past old military tunnels, barracks, and power magazines. You get a ferry ride, a bit of beach time, and a close look at Japan’s naval past in one outing.

I like the mix of outdoor walking and war history, and I like that the small group, capped at six people, gives the guide room to answer questions. Guides associated with this experience include Kyoko Kato, Lucy, and Kiyoko, with Lucy especially noted for using books and visual aids. The main consideration is the ferry: rough weather can cancel or change the plan, and people prone to seasickness may want to skip it.

Key points to know before booking

• Sarushima’s military ruins: Walk through a brick tunnel and past former barracks and power magazines on Tokyo Bay’s only natural island.
• A compact small-group format: The group is limited to six participants, so you can ask questions without shouting over a crowd.
• A useful Yokosuka pairing: Port Market provides lunch between the island and the Memorial Ship Mikasa.
• A guide-led history walk: Expect explanations about Sarushima, Yokosuka Bay, local naval activity, and the Russo-Japanese War.
• A half-day with real walking: The advertised duration is 330 minutes, with about two hours on Sarushima and additional walking in Yokosuka.
• Costs beyond the tour fee: The $70 price does not include lunch, drinks, transportation, or admission to Mikasa.

Why Sarushima makes this Yokosuka tour different

Many Yokosuka outings focus on ships, naval bases, or modern port views. This one begins with a short ferry ride to a wooded island that feels removed from the city, even though it sits close to the mainland.

Sarushima is not a tropical island getaway. Its appeal is the combination of nature and military remains. You walk beneath trees, look out across Tokyo Bay, and find old brick structures woven into the path. The island’s former facilities include a brick tunnel, barracks, and power magazines used by the Japanese military.

That mix gives the visit a useful sense of place. Instead of seeing military history only in a museum room, you walk through the spaces built for it. The setting also keeps the morning from feeling like a string of indoor exhibits.

Your guide leads the island visit for about two hours. Expect time for sightseeing, photographs, and a walk through the wooded areas. The plan also allows for the sandy beach, where you can look for shells and enjoy the open view across the bay.

You should wear comfortable shoes. The tour is not described as a strenuous hike, but it does involve walking on an island, through forested areas, and between several Yokosuka stops. If you want a slow, easy morning with little time on your feet, this is not the right fit.

Starting at Yokosuka-Chuo Station

The meeting point is outside the east exit of Yokosuka-Chuo Station on the Keihin Kyuko Line at 9:40 in the morning. From there, you walk about 20 minutes to the visitor center.

That opening walk matters. It gives you time to meet the guide, get oriented, and hear what the day will involve before reaching the ferry. The visitor center stop lasts about 30 minutes, although the supplied schedule does not specify exactly which exhibits or services are included there.

This is also the point where you should ask practical questions about the ferry, return timing, lunch choices, and ticket arrangements. Ferry and cruise services depend on weather, and the guide is expected to contact you the day before if conditions affect the plan.

The meeting location is in Yokosuka rather than central Tokyo, so you need to allow time for your own trip to the station. Transportation to and from the meeting point is not included in the $70 tour fee.

The ferry ride to Sarushima

The ferry crossing is listed at about 10 minutes each way. It is short, but it changes the pace of the day. You leave the station area, cross the water, and arrive at a place with no permanent urban streets or buildings to distract from the old military remains.

You may also get views of Yokosuka Bay and military boats during the ride. That detail is especially useful for visitors who want more than a standard historical walk. The harbor setting connects Sarushima to Yokosuka’s continuing naval identity.

The sea crossing is also the clearest practical weakness. Anyone prone to seasickness may find the ride uncomfortable, even though it is brief. Weather can cancel or alter ferry service, so keep your schedule flexible and avoid treating the island portion as guaranteed in poor conditions.

The activity information also refers to naval port cruise tickets as an extra cost, priced at ¥1,000 for adults and ¥500 for children. A port cruise is not part of the main listed itinerary, so ask the guide how it relates to your chosen plan before paying for it.

Walking through Sarushima’s brick tunnels and forest

The island visit is the heart of the experience. Your guide takes you past the remains of the old military facilities, including the brick tunnel, barracks, and power magazines.

The value here comes from the explanation. Without context, old walls and tunnels can look like scattered ruins. A good guide helps you understand how the structures fit together and why the island was important. Guides connected with this experience are described as using books, information materials, and visual aids, which can help you picture the island’s former military role.

I would give yourself time to stop for photographs rather than rushing from one feature to the next. The schedule allows about two hours, enough for a guided walk with pauses. The beach and wooded paths add variety, so this is not simply an architectural inspection.

The island also gives you a break from Tokyo’s dense streets. One booking described the contrast as a welcome chance to leave the city buildings behind and spend time in nature. That is a fair way to think about the morning: Sarushima is not a grand wilderness trip, but it offers a quiet change of scene close to Yokosuka.

The beach may appeal most to visitors who are less focused on military history. You can collect shells, take photographs, and look across the water. Keep in mind that this remains a guided historical outing, not a swimming or beach-resort activity. No swimming facilities or beach equipment are included in the information provided.

Lunch at Yokosuka Port Market

After returning by ferry, you walk to Yokosuka Port Market, which is about three minutes away. Lunch time is scheduled for one hour.

The market gives you flexibility because you choose from a variety of menus rather than receiving a fixed meal. That is helpful if you have particular tastes or want to control your spending. It also lets you experience a local food stop by the sea instead of eating at a standard chain near the station.

Lunch and drinks are not included. You should plan to pay separately and use the hour as a genuine break before the final historical stop. The available information does not name specific stalls or dishes, so the guide can be your best source for choosing what fits your appetite.

This stop also breaks up the day well. Sarushima involves outdoor walking, while Mikasa is a ship visit with a strong military focus. Port Market sits between the two and keeps the outing from becoming an unbroken series of historical explanations.

Exploring the Memorial Ship Mikasa

After lunch, the group walks about three minutes to the Memorial Ship Mikasa. The visit lasts around 40 minutes and includes time for photographs, a guided look around the ship, and the exhibition rooms.

Mikasa is presented as a way to learn about the Russo-Japanese War. You explore the upper and middle decks before visiting the exhibitions. That order gives you both the physical experience of a warship and the supporting historical material.

For many people, this will be the most structured history stop of the day. Sarushima shows military infrastructure in an outdoor setting. Mikasa puts you inside a preserved naval vessel and adds exhibition rooms to explain the larger events.

Admission is extra. The listed prices are ¥600 for adults, ¥500 for seniors, and free for children. The tour itself is not suitable for children under five, even though the ship’s admission information lists free entry for children. Those are separate points, so families should follow the tour age restriction.

The 40-minute visit is enough for an introduction, but it is not a long museum study. If naval history is your main reason for visiting Yokosuka, you may want to ask how much time the guide can spend on the ship and exhibitions. If you prefer a varied day, the shorter stop works well because the island receives the largest share of the schedule.

The guide makes the difference

A small group can change the feel of this outing. With no more than six participants, the guide can respond to questions and adjust explanations more easily than on a large bus tour.

The experience is offered by Kyoko Kato, and guide names associated with bookings include Lucy and Kiyoko. Descriptions of Lucy emphasize clear English, friendliness, local knowledge, and the use of books and other aids. Kiyoko is associated with detailed attention, local food suggestions, and lesser-known routes around Yokosuka Bay and Sarushima.

You should confirm the guide assigned to your date and the language you need. English and Japanese are offered. The strongest reason to choose a guided visit rather than going alone is not simply getting from the ferry to the ship. It is having someone explain the island’s military remains, point out details you might pass, and connect Sarushima with Yokosuka’s naval past.

The guide also helps with the day’s practical rhythm. The schedule includes a station meeting, a visitor center, two ferry rides, lunch, the ship, and a walk back to the station. A local guide can make those transitions easier, especially if ferry conditions change.

What the $70 price really covers

At $70 per person, this is not an all-inclusive sightseeing package. The fee mainly buys the small-group guiding service and the structure of the day. You still pay for lunch, drinks, transportation, the Memorial Ship Mikasa, and any separate naval port cruise.

That can still be good value if you want historical interpretation. Going independently may cost less in guiding fees, but you would need to organize the ferry, island route, historical context, lunch, and ship visit yourself. The added value is strongest for first-time visitors to Yokosuka who want a local explanation rather than a self-guided checklist.

The price is less attractive if you only want to ride the ferry and stroll the beach. In that case, the guide and historical focus may be more than you need. It is also worth adding the ¥600 adult Mikasa admission and your own food budget when comparing the total cost.

The activity offers free cancellation up to 24 hours before the start and allows you to reserve without paying immediately. Those terms are useful because the ferry depends on weather, but you should still read the final booking conditions carefully.

Who should book this outing

I would recommend it to visitors who want a half-day outside central Tokyo and enjoy a blend of nature, military history, and local food. It suits couples, solo visitors, and small groups who like asking questions and walking at a steady pace.

History fans will appreciate the old brick tunnel, barracks, power magazines, and Mikasa. Nature-minded visitors get forest paths, bay views, and a sandy beach. The tour also works for anyone staying in the Tokyo area who wants to see a port city with a different character.

It is not suitable for children under five, babies under one, people prone to seasickness, or people over 80, according to the activity restrictions. The walking, ferry rides, and outdoor setting also make comfortable shoes essential.

You should think twice if you want a polished luxury tour, a long beach day, or a flexible schedule with no fixed stops. The plan is fairly full, and the weather can affect the ferry portion.

A practical half-day schedule

The advertised duration is 330 minutes, or five and a half hours. The listed plan begins at 9:40 and includes:

• A 20-minute walk from Yokosuka-Chuo Station to the visitor center
• About 30 minutes at the visitor center
• A 10-minute ferry ride to Sarushima
• About two hours on the island
• A 10-minute ferry ride back
• One hour for lunch at Port Market
• A three-minute walk to Mikasa
• About 40 minutes aboard the ship
• A 20-minute walk back to Yokosuka-Chuo Station

The individual times add up to a little over five hours, so allow for normal movement between stops and possible timetable changes. The exact return time may shift with ferry operations and the pace of the group.

Should you book the Sarushima and Mikasa tour?

Book it if you want Yokosuka explained by a local guide rather than simply visited. The combination of Sarushima’s military ruins, a short ferry ride, Port Market lunch, and the Memorial Ship Mikasa gives you a clear sense of the city’s setting and naval past in one manageable outing.

The best reasons to go are the small group, the two-hour island walk, and the chance to ask detailed questions. The main cautions are the extra costs, the amount of walking, and the weather-dependent ferry.

For a visitor who enjoys history but also needs trees, beaches, and open water, this is a well-balanced choice. For someone seeking only a quick ship visit or a carefree seaside excursion, the $70 guide fee may not be worth it.

FAQ

Where does the tour meet?

Meet at 9:40 am outside the east exit of Yokosuka-Chuo Station on the Keihin Kyuko Line.

How long does the experience last?

The advertised duration is 330 minutes, or five hours and 30 minutes.

What languages are available?

The tour is offered in English and Japanese.

How many people can join the group?

The group is limited to six participants.

What is included in the price?

A licensed local guide is included.

Is lunch included?

No. Lunch and drinks at Yokosuka Port Market are paid for separately.

Is admission to the Memorial Ship Mikasa included?

No. Admission is listed separately at ¥600 for adults, ¥500 for seniors, and free for children.

What will I see on Sarushima Island?

You will see former military facilities including a brick tunnel, barracks, and power magazines. The visit also includes forest walking, Tokyo Bay views, and time at the sandy beach.

Can the ferry service be canceled?

Yes. Ferry and cruise services depend on weather conditions. The guide will contact you the day before if conditions affect the plan.

What should I bring?

Bring comfortable shoes. You should also plan for your own lunch, drinks, transportation, and any required admission tickets.