From Kotor: Boat to Blue Cave & Lady of the Rocks &Submarine Base

The Blue Cave is the headline: sunlight enters through an opening beneath the sea, turning the water an almost unreal blue. From Kotor, this roughly three-hour speedboat trip also reaches the man-made island of Our Lady of the Rocks, the old submarine tunnels, Perast, and Mamula Fortress.

I like two things here. First, you see several very different corners of the Bay of Kotor in one outing. Second, the speedboat makes the distant cave possible in a half-day, while still leaving you time to explore Kotor. The main catch is crowding and sea conditions. The ride can be choppy, boats may fill the cave, and the Blue Cave may be closed when waves or water levels make entry unsafe.

Key points before you book

• Blue Cave swimming depends on nature: Rough water or a high sea can prevent entry, and swimming may take place at a nearby spot instead.
• A fast, open-water ride: The trip out can take about 45 to 60 minutes and may be bumpy once you leave the sheltered bay.
• Four very different sights: Expect the cave, Our Lady of the Rocks, submarine tunnels, and a view of Mamula Fortress.
• Small boat comfort varies: Accounts describe groups from about 11 to 16 people, so ask about the boat and seating if space matters to you.
• Cruise passengers need a firm plan: Kotor is a tender port, and the boat leaves on time. A late arrival can mean missing the trip without a refund.
• The price is moderate: At $32.53 per person, it can be good value for a scenic outing, but less so if the cave is closed or the ride feels overcrowded.

Why the Blue Cave is worth the ride

The Blue Cave sits beyond the inner Bay of Kotor, where the water opens toward the Adriatic. Its special effect comes from daylight entering through the underwater opening and reflecting through the sea. Inside, the water can look intensely blue, especially when the sun is strong.

You should think of this as a natural sight, not a guaranteed swimming session. The cave is open to the sea, so waves can make the entrance unsafe. After heavy rain or rough weather, the water level may also prevent the boat from entering.

When conditions cooperate, you may spend only a few minutes inside. That is not necessarily poor organization. The cave is small, and several boats can queue outside or enter at once during busy periods. If too many boats are inside, the captain may take you to a nearby swimming area instead.

That backup stop can still be enjoyable. You get time to swim or snorkel in clear coastal water, often for about 10 to 20 minutes. Still, you should book this tour for the whole outing, not for a promise of a long swim inside the cave.

The speedboat ride from Kotor

The meeting point is at Hawaii Boat Tours Kotor near Park Slobode, a short walk from Kotor’s waterfront. You are asked to arrive 30 minutes early, though some people find 15 minutes sufficient once they know where to go. The departure area can feel busy, with several boat companies and groups gathering nearby.

The first part of the ride usually takes you through the Bay of Kotor. As the boat heads toward the open water, the pace picks up and the ride can become much rougher. Some reports describe 45 minutes each way to the cave, while the full advertised trip lasts about three hours, including travel time and stops.

I like the speed because it lets you cover a lot of coast in a short morning or afternoon. You get wide views of the water and mountains instead of spending a full day on a slow boat. The tradeoff is comfort. If your back is sensitive, you dislike bouncing, or you want a quiet sightseeing cruise, this may not be your best choice.

Bring sunscreen, a hat that fits securely, and a light layer. You may get sprayed, and mid-May conditions can feel cold on a moving boat even when the day is sunny. A few reports also note that shade was not always set up at departure, so prepare for direct sun.

Our Lady of the Rocks and the short visit to Perast

Our Lady of the Rocks is a small man-made island near Perast. Its church and local legend give the stop a strong sense of place. You usually get about 20 minutes here, enough to walk around, look at the church, and take photographs.

The island is compact, so 10 minutes may be enough if you only want a quick look. If you want to enter the church or take your time, the stop can feel short. The supplied details do not include admission fees, so check what is included if you plan to visit interior spaces.

The nearby town of Perast gives you a glimpse of old coastal Montenegro. Its single main street is lined with Baroque buildings, old palazzos, Catholic churches, and defensive towers. The town is part of the UNESCO-listed Bay of Kotor area, and its compact size makes it easy to appreciate even during a brief cruise stop.

One limitation is that the overall outing is tightly timed. Perast is described as part of the route, but the listed schedule gives 20 minutes specifically to Our Lady of the Rocks, not a long independent visit in town. If Perast is your main goal, plan a separate land visit.

Inside the former submarine tunnels

The former submarine tunnels are one of the most unusual stops. These openings were built into the mountains so military submarines could shelter out of sight. The boat takes you inside, giving you a close look at the dark, stark passage rather than simply pointing at it from offshore.

The stop lasts about 10 minutes. That is enough to see the structure and hear the basic story, but not enough for a long historical talk. The quality of the explanation appears to depend heavily on the captain. Some outings include narration at the tunnel, while other accounts describe very little commentary.

I find this stop valuable because it breaks up the natural scenery with something built, secretive, and tied to Montenegro’s recent military past. It also works well on a cloudy day, when the Blue Cave may be less impressive. The boat’s ability to enter the tunnel makes the stop feel more direct than a standard coastal sightseeing pass.

Mamula Fortress from the water

Mamula Fortress sits on an island at the entrance to the Bay of Kotor. The boat makes a short stop of about 10 minutes around the island. You can admire the fortifications from the water while the skipper explains its past as a prison island.

This is mainly a photo and storytelling stop, not a full fortress visit. The available details do not promise that you go ashore, so do not book the tour expecting time to walk through the fortress. The short pause is useful as part of the route, but the Blue Cave and submarine tunnels are the stronger reasons to choose this particular trip.

Together, Mamula and the submarine tunnels add context to the coast. You are not only looking at pretty water. You are also seeing how the bay was defended and used in the past.

Commentary can make or break the trip

The captain is central to this experience. Several outings receive praise for safe handling, punctual timing, and confident navigation among heavy boat traffic. Captain Boben is singled out for making a family group’s excursion especially enjoyable, and other accounts praise the captain’s skill with waves.

But you should keep your expectations modest about guiding. Some trips include useful explanations at the submarine tunnels and historic stops. Others provide little information about Kotor, local culture, or the sites along the way. A recorded guide may be used for consistent information in mixed-language groups, while some captains offer more personal narration.

This matters because the ride out is long compared with the stops. If you want a history-focused tour, ask before boarding how much commentary will be provided. If your priority is scenery, swimming, and speed, limited narration may bother you less.

The activity is offered in English, and confirmation is provided when you book. Service animals are allowed, and most people can participate. The tour has a stated maximum of 80 people, though the boat experiences described in the supplied information range from 11 to 16 passengers. Since comfort depends on the actual vessel, ask the operator for the expected group size if you need room to stretch or move around.

Crowding, safety, and comfort

Crowding is the clearest practical concern. Some groups report feeling comfortable with about 14 people, while others describe too few seats, limited room for photographs, or a boat that felt suitable for fewer people than were aboard. These are very different experiences, and they may reflect different boats or busy departures.

The Blue Cave is also crowded at popular times. You may find several boats waiting outside, with only a few minutes inside before moving on. Swimming near many moving boats can feel uneasy, so follow the captain’s directions and use the designated alternative area if the cave itself is too busy.

Boat safety is another reason to pay attention to conditions. The operator says safety limits are followed, and some passengers praise the captains for careful navigation. At the same time, individual accounts raise concerns about missing safety instructions, rough handling, and how minor injuries were handled. I would ask where the life jackets are and listen carefully to the captain’s instructions before the boat accelerates.

A speedboat is not a smooth ferry. Sit securely, keep loose items tucked away, and expect spray. If you are prone to motion sickness, the combination of an hour-long ride, waves, and heavy boat traffic may be uncomfortable.

Is $32.53 good value?

At $32.53 per person, the tour is priced accessibly for a three-hour trip that includes several coastal sights and a swimming opportunity. You are paying for the boat, fuel, captain, and the convenience of seeing far-off places without arranging several separate transfers.

The value is strongest on a sunny, calm day when the boat reaches the Blue Cave, the water glows, and you get time to swim. The submarine tunnel and Our Lady of the Rocks add variety, so even a short cave visit can still leave you with a full outing.

Value drops if the sea prevents cave entry, the boat is late, a fuel stop cuts into the schedule, or the group is packed tightly. A private boat costs more, but it may be worth the extra money if you care about personal space, flexible timing, or a quieter ride.

You may also find similar trips sold near the dock. Booking ahead gives you a confirmed place, which is helpful in a busy season. Waiting until the day may let you check the weather and sea conditions first, but it also risks losing your preferred departure.

Cruise ship timing needs extra care

Kotor is a tender port for some cruise ships. Getting ashore can take much longer than expected, especially after a medical delay or heavy port traffic. This tour departs at a fixed time and does not wait for late arrivals.

The cancellation terms are strict: you can cancel for a full refund up to 24 hours before the start time, but changes or cancellations inside that window are not accepted. If poor weather cancels the experience, you are offered another date or a full refund. The same applies if the minimum number of participants is not reached.

If you arrive by cruise ship, allow more time than you think you need. A tour booked independently does not carry the same protection as an excursion arranged through the cruise line. The meeting point is back at the starting location, so you also need enough time for the return ride and the walk back to the ship’s tender area.

Who will enjoy this boat trip

I would choose this for you if you want a fast, scenic sampler of the coast and do not mind a rough ride. It suits active adults, families who enjoy boat trips, and anyone who wants a swim without spending a full day on the water.

It also works for people who like variety. In three hours, you see a glowing sea cave, a historic island, an old town, military tunnels, and a fortress. That is a lot of scenery for the price.

I would be cautious if you need a smooth ride, detailed guiding, lots of time at each stop, or guaranteed access to the Blue Cave. It is also a poor fit if you are on a tight cruise schedule and cannot reach the dock well before departure.

Should you book it?

Book this tour if the forecast is good, you are comfortable on a speedboat, and you see the Blue Cave as one part of a wider coastal outing. The best features are the striking cave, the unusual submarine tunnels, the capable captains reported on several trips, and the chance to cover a large stretch of the bay in half a day.

Before paying, confirm the meeting time, expected boat size, swimming arrangements, and amount of English commentary. If you are visiting from a cruise ship, allow a generous margin for tendering. If personal space matters more than price, choose a private boat instead.

FAQ

How long does the Kotor Blue Cave boat tour last?

The experience lasts approximately three hours, including travel time between Kotor and the coastal stops.

Where does the tour begin and end?

It begins at Hawaii Boat Tours Kotor near Park Slobode 1 in Kotor. The activity ends back at the same meeting point.

What stops are included?

The route includes the Blue Cave, Our Lady of the Rocks, the nearby town of Perast, former submarine tunnels, and a short stop around Mamula Fortress.

Can I swim inside the Blue Cave?

Swimming inside the cave is not guaranteed. Sea conditions, water levels, safety rules, and the number of boats may prevent entry or swimming there. The captain may take you to a nearby swimming spot instead.

Is the tour suitable for cruise ship passengers?

It can be, but you must reach the meeting point on time. The boat leaves at its scheduled departure, and delays getting ashore from a tendered cruise ship can cause you to miss the tour.

What is the cancellation policy?

You can cancel for a full refund at least 24 hours before the start time. Cancellations or changes made less than 24 hours ahead are not refunded or accepted. If poor weather or an insufficient number of participants cancels the tour, you are offered another date or a full refund.