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See in Sasebo · #1 of the port's ten

Kujukushima by boat

~3h — the round trip from the gangway, with the 60-minute margin kept aside.

Photo: 663highland / CC BY-SA 4.0

Tap a photo to see it large. 9 photographs, each credited.

Round trip
3 hr
From the ship and back
Fits
a 2–3 hour stop ashore
Margin already counted
Getting there
Bus ~25 min
¥390
Booking
Just turn up
Nothing to reserve
Why we send people here

A drowned coastline of 208 wooded islets — the name means ninety-nine and undercounts by half. The densest island cluster in Japan, and the fifty-minute public sailing has a fixed fare, no operator and no markup.

Why it earns the hours
  • Our number 1 for Sasebo, out of ten. It is the first thing we would spend the hours on.
  • On a 4–6h ashore call our verdict is "The plan" — boat, aquarium beside the pier, then tenkaiho on the way back.
  • It is not only a photo stop: a coastline that drowned, and a name that gave up counting.
Before you count on it
  • Boats ~10:00–15:00 — roughly hourly.
Read the full Kujukushima guide →
The story

Why Kujukushima by boat is famous

A coastline that drowned, and a name that gave up counting

Kujukushima means ninety-nine islands and there are actually 208, in the densest island cluster in Japan. Almost none are inhabited, so the view from a boat is unbroken. The whole group is inside Saikai National Park and the sightseeing boats are a scheduled public service rather than a tour.

Kujukushima means "ninety-nine islands," which in older Japanese was a way of saying "too many to count." The actual figure is 208 — the densest cluster of islands anywhere in Japan, in about twenty-five kilometres of water, and only four of them have anyone living on them.

A drowned coastline: hills that became islands when the sea rose, leaving 208 wooded islets in about twenty-five kilometres of water. It is the densest island cluster in Japan, and only four of them are inhabited. Kujukushima means "ninety-nine islands," which is an old way of saying "too many to count" — and it undercounts by half.

The whole area is inside Saikai National Park. The fifty-minute sightseeing boat threads between the islets close enough to see the pines, and it is a scheduled public service at a fixed fare — no booking, no tour operator, no markup.

geology
A hill landscape floods as the sea rises

Hilltops become islands; valleys become channels

1955
Saikai National Park is designated

Which is why they are still empty

always
208 islands; four inhabited

The densest cluster in Japan

Nov–Mar
Oyster huts open along the shore

Buy by the bucket, grill it yourself

Do this

Take the public boat, then eat oysters in a hut if it is winter. Neither needs booking and both are cheap.

Before you go

Things worth knowing

  • Check the sailing board when you arrive and build the rest of the day around it. It is the only fixed timetable here.
  • Sit on the open upper deck. The islands pass close and the enclosed cabin wastes the trip.
  • Umikirara aquarium is beside the pier, indoors, and unusually good on jellyfish.
  • Oyster huts operate along this shore from about November — grilled by the bucket over charcoal.
On the signs

Words you will see

Kujukushima九十九島
"Ninety-nine islands" — meaning too many to count. There are 208.
Riaリアス海岸
A drowned valley coastline. Intricate, deep, and sheltered.
Kaki-goyaかき小屋
An oyster hut. Charcoal, gloves, a bucket, and no ceremony.
Saikai西海国立公園
The national park, since 1955. The reason the islands are empty.
The arithmetic

Where the 3 hr goes

Counted from the moment you step off the gangway. The hour before all-aboard is not in this bar; it is already set aside.

Out25 minBus ~25 min
There2 hr 10 minWhat you came for
Back25 minTo the gangway

25 minutes each way is the honest figure for bus ~25 min, not the optimistic one. If your ship is late, cut the 2 hr 10 min in the middle. Never cut the hour at the end.

If you have longer

What fits alongside it

Each of these still lands you back aboard with the hour to spare on a 6-hour stop ashore.

Asked about Kujukushima by boat

Questions people send us

How many islands are in Kujukushima?

Two hundred and eight. The name means "ninety-nine islands," which in older Japanese usage meant simply "too many to count" — so it undercounts by half. Only four are inhabited, and the whole area lies within Saikai National Park.

Do I need to book the Kujukushima boat?

No. It is a scheduled public sailing at a fixed fare of around ¥1,800, roughly hourly, with no tour operator and no markup. Check the sailing board when you arrive at Pearl Sea Resort and build the rest of your day around it — it is the only fixed timetable in this port.

The day this belongs to

Routes that already include it

Each one is a finished day we have walked and timed, with this stop in it. Read the route rather than assembling it yourself.

Pairs well with

What to put beside it

Each of these still lands you back aboard with the hour to spare.

Build your own day →
The one rule: be back on board 60 minutes before all-aboard. Build the whole day on the Sasebo plan page.