Kos Town: Glass-Bottom Boat Cruise with Swimming Stops

The old shipwreck is the surprise star of this 150-minute Kos boat trip. From the yellow Dorry Glass Bottom Speedboat, you can look through two viewing areas as the boat passes over the wreck, then stop for a swim in clear water near Pserimos. It is a simple outing, but the mix of sea views, fish, music, and water time gives it more life than a basic harbor cruise.

I like the short half-day length, which leaves room for lunch, a siesta, or an evening in Kos Town. I also like the friendly, low-pressure crew, with staff helping children and less confident swimmers without hovering. The main caution is seating: the boat can fill quickly, and the glass panels may be scratched or cloudy in places.

Key points to know before you book

• The shipwreck is the main viewing stop: The clearest view comes when the boat is positioned directly above it.
• The swim stop is the biggest pleasure: Expect clear water, fish, a sandy shore, and time for swimming, snorkeling, jumping, or using the slide.
• Arrive early for a better seat: Outside seats can go fast, especially when the boat is already filling before departure.
• The boat has practical extras: There is a bar, snacks, toilets, shade, floating aids, and onboard music.
• The trip suits families: Children can watch for sea life, fish from the boat, use the slide, or simply enjoy the ride.
• The $23 price is strong value: You get a boat trip, a wreck viewing, and a swim stop without giving up a full day.

From Kos Town port to open Aegean water

You meet the boat right at the port in Kos Town. Look for the yellow Dorry Glass Bottom Speedboat, a useful detail because the harbor has plenty of activity and you do not want to wander around searching for a small check-in office.

The cruise lasts 150 minutes, or two and a half hours. That timing is a major selling point. I find full-day boat excursions can eat up too much of a holiday, while this trip gives you the main pleasures of a sea outing without taking the whole day.

Once onboard, you can find a place on the top deck, sit in the shaded area, or visit one of the two glass-bottom viewing sections. The boat has a bar selling drinks and snacks for an extra charge. The selection includes soft drinks, beer, and cocktails, with freshly made cocktails reported at €5. Card payment is available onboard, and the snacks are described as reasonably priced.

Music plays during the ride, giving the cruise a light party feel rather than a quiet nature trip. That will suit families and groups looking for a cheerful afternoon. If you prefer a calm boat ride, the music is worth knowing about before you reserve.

The crew speaks English, Greek, Italian, and German. The staff have also been helpful with children, including one child who did not want to swim and was helped to fish instead. Manolis received particular praise for being attentive to an autistic child, a useful sign that the crew can respond thoughtfully when a family needs extra care.

Choosing your seat before the boat fills

Arrive early if you care about where you sit. One report describes boarding 20 minutes before departure, only to find the boat already full and the remaining spaces mainly in the undercover section near the glass bottom.

The outside and upper deck give you the best breeze, sun, and broad views of Kos and Pserimos. They also expose you to more wind and sun. The shaded section is useful when the heat becomes too much, but it may feel busier and can be less comfortable if the sea is choppy.

This matters if anyone in your group gets seasick. The boat is a speedboat, and one family found the ride choppy enough to make a child feel unwell. Sitting outside may help with air and visibility, but you should still consider your own comfort on moving water.

Boarding can feel a little untidy, especially when people crowd around at the same time. Once the boat leaves the port, the atmosphere settles. If you want a prime seat, arrive well before departure rather than treating the meeting time as the moment to show up.

Glass-bottom viewing and the old shipwreck

The glass-bottom feature is useful, but keep your expectations sensible. You are looking through panels set into a working boat, not through a large submarine-style viewing chamber.

The panels can be scratched or fogged, and one area may feel underwhelming when there is nothing particular below the boat. Some people find the glass less impressive at first. The experience improves when the boat reaches the shipwreck and holds position above it.

That is when the glass earns its place. The water can be clear enough to show the wreck and fish below, giving you a different view from simply seeing a boat ruin from the surface. The guide provides information about the wreck, and the stop is long enough for people to gather around the viewing areas.

I would treat the glass bottom as a bonus rather than the sole reason to book. If your main aim is serious marine viewing, this may feel limited. If you want a fun boat ride with one unusual viewing stop, it works well.

Children often get the most from this part. Give them a simple job, such as spotting fish or looking for changes in the wreck. The boat also offers enough variety that a child who loses interest in the glass can move to the deck, listen to music, have a snack, or wait for the swim stop.

The Pserimos swim stop is the highlight

The boat stops near Pserimos, where the water is clear and green-blue. This is the part I would value most. You can swim from the boat, look for fish, use a snorkel, or head toward the sandy shore if conditions allow.

Floating aids, pool noodles, and goggles have been available onboard. These are useful for children and adults who are not strong swimmers, though one comment asked for larger life vests for non-swimmers. Bring your own snorkel if you have one, since it makes the stop more rewarding and lets you spend less time simply floating.

The boat also has a slide and places from which you can jump into the sea. That adds energy for older children and adults, while the clear water and sandy beach offer a gentler option for anyone who wants to swim quietly.

The stop is described as lasting long enough to swim and relax, not just make a quick splash before moving on. One person wished for more time at the Blue Lagoon, while another expected two swim stops and found only one. The practical point is simple: plan on one main swimming stop, and enjoy it fully.

Do not count on a beach day in the usual sense. You are stopping by boat, and your time is shared with the group. Still, the setting gives you a fine taste of the Pserimos area without committing to an all-day island excursion.

What the cruise feels like for families

This trip is built for variety. A child can watch fish through the glass, look at the wreck, listen to music, eat a snack, jump from the boat, use the slide, or stay dry and enjoy the view.

The crew has been praised for being patient and helpful with children. One child who did not want to swim was helped to fish, which shows that getting into the water is not the only way to enjoy the outing.

The boat has toilets, another small but valuable point for a two-and-a-half-hour trip. There is also shade, which gives you a break from the Greek sun. Pack swimwear, a towel, sunscreen, and a snorkel if you own one. The provided information does not list a transfer service, so plan to reach the port on your own.

For families with very young children, think about seating and sea conditions. The ride can be choppy, and a crowded boat may make moving around harder. Arriving early gives you a better chance of choosing a comfortable place.

A relaxed outing, not a serious marine expedition

The cruise works best when you see it as a fun sea outing with light nature viewing. You will see fish and sea life, but the glass panels are not a replacement for snorkeling. The wreck is interesting because of its setting and visibility, though its appeal can vary from person to person.

The guide can add useful context. One outing included information about the history of the island and its importance to medicine, with the guide keeping younger people interested as well as adults. That suggests the experience can offer more than music and swimming, although the exact amount of commentary may depend on the sailing.

The scenery is simple and rewarding: open water, views back toward Kos, and Pserimos ahead. You get sun and wind on the upper deck, with a shaded retreat when needed. The ride itself is part of the experience, not merely transport between stops.

If you want a quiet, highly focused nature tour, the onboard music and family atmosphere may not be ideal. If you want a sociable cruise with a little sightseeing and a strong swim stop, the balance is better.

Is $23 good value for Kos?

At $23 per person, this is one of the easier Kos excursions to justify. The price includes the boat trip, the shipwreck viewing, the cruise toward Pserimos, and the swimming stop. You pay separately for drinks and snacks, but those extras are not forced on you.

The value comes from the time. At 150 minutes, you get a proper outing without paying for a full day at sea. You also avoid filling an entire holiday day with transport and scheduled stops.

The experience is not luxury travel. You may deal with crowded boarding, limited good seats, scratched glass, music, and changing sea conditions. But those are fair trade-offs at this price, especially if your goal is a memorable swim in clear water rather than polished service.

Free cancellation is available up to 24 hours before departure for a full refund, and you can reserve now and pay later. Check the available departure time when booking, since the stated duration is 150 minutes and the later sailing may depend on the boat returning from an earlier one.

Who should book this boat trip?

I would recommend it to families, couples, and friends who want an easy Kos activity with a clear beginning and end. It is especially useful when you want time at sea but do not want a full-day cruise.

It also suits mixed groups. Strong swimmers can snorkel and jump in, while cautious swimmers can use floating aids or stay aboard. Children have enough distractions to keep the trip moving, and the staff have shown care when someone needs help.

You may want to skip it if you need a spotless, high-end glass-bottom experience or if you dislike music and busy boats. You should also think twice if anyone in your group is prone to seasickness, since the speedboat can feel choppy.

Should you book the Dorry Glass Bottom Speedboat?

Yes, if you want clear-water swimming, a shipwreck viewing, and a short sea adventure for $23. The Blue Lagoon style stop near Pserimos is the strongest reason to go, while the wreck and glass panels give the ride a useful extra feature.

Book it with realistic expectations. Arrive early for a better seat, bring a snorkel, expect one main swim stop, and treat the glass bottom as a bonus rather than a full underwater tour. For a family-friendly afternoon that does not consume your whole day, this is a very good Kos choice.

FAQ

Where does the Kos glass-bottom boat cruise meet?

You meet the yellow Dorry Glass Bottom Speedboat directly at the port in Kos Town.

How long does the cruise last?

The advertised duration is 150 minutes, or two and a half hours.

How much does the experience cost?

The listed price is $23 per person.

What is included in the price?

The boat trip is included. Drinks, snacks, and other purchases from the onboard bar are not included.

Is there a swimming stop?

Yes. The boat stops near Pserimos, where you can swim in clear water and see fish.

Can I see a shipwreck from the boat?

Yes. The boat passes over an old shipwreck, which you can view through one of the glass-bottom viewing areas.

Are drinks and snacks available onboard?

Yes. The boat has a bar selling drinks and snacks for an additional charge. Cocktails, beer, and soft drinks are available, and card payment is accepted.

What languages are available?

The host or greeter languages are English, Greek, Italian, and German.

Can I cancel or pay later?

You can cancel up to 24 hours before departure for a full refund. You can also reserve your place and pay later.