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

The best part of this three-hour speedboat trip is the sharp change of scene. You leave Kotor’s calm bay, skim along the coast, pass old stone towns and military tunnels, then reach the Blue Cave, where sunlight can turn the water an extraordinary blue. It is a lively outing, not a quiet cruise.

I like the mix of swimming and sightseeing, and I like that the route includes both natural scenery and unusual military landmarks. The former submarine tunnels are a fun surprise, while Our Lady of the Rocks gives you a short look at one of the Bay of Kotor’s most memorable cultural sites. The main concern is crowding: boats can carry around 14 people, and popular stops may feel packed in high season.

Key points to know before booking

• The Blue Cave depends on the sea: Rough water or a high swell can make entry unsafe, and the boat may use a nearby swimming spot instead.
• The ride can be bumpy: The open-water section outside the bay may be choppy, especially with heavy boat traffic.
• Swimming inside the cave is not guaranteed: Even when the boat enters, time inside can be brief, and swimming may not be allowed.
• The submarine tunnels are a memorable stop: You enter an old military tunnel by speedboat and hear stories about its past.
• The meeting point is in Kotor: Hawaii Boat Tours Kotor departs from Park Slobode 1 and returns there.
• Cruise passengers need a generous time cushion: Kotor is a tender port, and late arrival can mean missing the boat without a refund.

A fast boat into Montenegro’s blue-water coast

This trip packs a lot into about three hours. From the dock at Park Slobode 1 in Kotor, you board a speedboat and head toward the outer part of the bay and the Adriatic coast. Travel time is included, so the journey to and from the Blue Cave takes a large share of the excursion.

That matters when you set your expectations. You are not getting three hours of stops. You are getting a scenic boat ride with several short visits, including roughly 30 minutes planned for the Blue Cave, 20 minutes at Our Lady of the Rocks, about 10 minutes at the submarine tunnel, and about 10 minutes around Mamula Fortress.

The boat ride itself is part of the attraction. You see steep Montenegrin hills dropping toward the water, small settlements along the shore, and a succession of old stone buildings and fortifications. The captain’s handling makes a difference here. One especially positive account praised Captain Boben for keeping a group of 11 people safe and happy, while another praised a captain who adjusted speed well in rough water.

Still, a speedboat is not a smooth sightseeing launch. Outside the sheltered bay, waves and wake from other boats can make the ride uncomfortable. If you have back trouble, motion sensitivity, or simply prefer a quiet cruise, this may not be your best choice. Sit securely, hold on when the boat accelerates, and expect some spray.

The Blue Cave: beautiful, busy, and weather dependent

The Blue Cave is the main reason most people choose this excursion. Its opening faces the sea, allowing sunlight to enter beneath the rock and reflect through the water. When the angle and conditions are right, the cave has a striking blue glow. You may also have the chance to swim or snorkel in the clear water.

The catch is simple: the cave is open to the sea. Waves, wind, rain, and water level can all affect access. Several departures have been unable to enter because the water was too rough or the entrance was effectively unsafe. This is not a minor detail. If the Blue Cave is the one thing you most want to see, check the forecast before booking and understand that no operator can guarantee entry.

Crowds are another issue. The cave is a popular stop, and several boats may arrive together. When that happens, you might spend only a few minutes inside, or the captain may skip entry and take you to a nearby swimming area. That alternate stop can still be pleasant, but it does not replace the cave if you have come specifically for its blue light.

Swimming inside the cave is not guaranteed either. Conditions and local safety rules may prevent it, and one account noted that swimming was offered outside the cave instead. Bring a swimsuit, towel, and sunscreen, but think of swimming as a welcome possibility rather than the whole purpose of the trip. Snorkeling equipment may not be available in equal quantities for everyone, so bring your own mask if you have one.

The most practical advice is to treat the Blue Cave as a weather-sensitive highlight, not a promise. On a calm, less crowded day, it can be the defining moment of the tour. On a rough or busy day, it may become a quick look from the boat followed by a swim somewhere else.

Former submarine tunnels, a brief but unusual stop

The former submarine tunnel is one of the most distinctive parts of the route. The speedboat carries you into a tunnel cut into the mountain, once used to hide military submarines. You see the structure from inside the water rather than simply looking at it from a road or viewpoint.

The stop lasts around 10 minutes, so this is a close look, not a full museum visit. Its appeal comes from the setting and the feeling of entering a place built for secrecy and defense. The dark opening in the rock makes a sharp contrast with the bright water outside.

Commentary can vary. Some captains explain the tunnel and its past in an engaging way, while other departures provide only a short explanation or use recorded information. If local history is important to you, ask questions when the boat slows down. The ride is more scenic than lecture-based, and the captain may be focused on maneuvering safely inside the tunnel.

Even with limited explanation, I consider this stop worthwhile. It is unusual, quick, and tied directly to the coast you are seeing. Just do not expect a long guided visit.

Our Lady of the Rocks and a glimpse of Perast

Our Lady of the Rocks is a man-made island near Perast, marked by a Catholic church. Local tradition holds that the island grew through the placing of rocks and the sinking of old ships around a small reef. The church and island are among the most recognizable sights in the Bay of Kotor.

The visit here lasts about 20 minutes. That is enough time to step ashore and look around, though the island is small and can feel crowded when several boats arrive together. You may find that 10 minutes is enough for a quick look, while the full stop gives you more time to see the church area and take photographs.

The stop works well because it breaks up the fast ride with a cultural sight. You are not just racing from one swimming spot to another. You get a short connection to the area’s religious traditions, local stories, and stone-built coastal towns.

The tour also cruises past Perast, a small town known for Baroque buildings, old palazzos, Catholic churches, and defensive towers. The town has a single main street and an unusually concentrated collection of historic sights. On this experience, Perast is mainly a passing view rather than a full walking visit, so do not book the boat expecting time to explore its lanes or museums.

If Perast interests you, consider returning independently on another part of your Montenegro visit. The boat gives you a useful first look, but the town deserves more than a quick pass from the water.

Mamula Fortress and the outer coast

The boat makes a short stop near Mamula Fortress, usually about 10 minutes. The circular stone fortification sits on an island at the entrance to the Bay of Kotor and was later used as a prison. Its position gives it a stark, isolated character.

This is primarily a viewing stop. You admire the fortress from the water while the captain explains some of its past. Do not expect a long shore visit or time to tour the interior. The short pause is enough to take in the shape of the island and understand why the location was chosen for defense.

Mamula adds a darker note to an otherwise bright outing. The Blue Cave is about light and water, while the submarine tunnel and fortress point to the military importance of this coast. Together, the stops give the ride more variety than a basic beach excursion.

What the boat experience is really like

The operator advertises a maximum of 80 people for the activity, but the individual boat is much smaller. Reports describe groups ranging from 11 to 16 people, with the licensed capacity stated by the operator as 14 people including the captain. That means the practical experience can vary sharply from one departure to another.

With around 11 to 14 people, the boat may feel lively but manageable. With more people, you may have little room to shift position or take photographs. A few accounts describe the boat as crowded, with limited seating and uncomfortable movement. Another person found a group of 14 perfectly acceptable and praised the captain’s skill.

This is the tradeoff for the low price of $32.53 per person. You get a fast boat and a broad route at a budget rate, but you should not expect the room, quiet, or personal attention of a private charter. A private boat costs more, yet it may be worth considering if you are traveling with family, want more control over stops, or dislike being shoulder to shoulder with other people.

The captain’s role also varies. Several accounts praise careful driving, punctual timing, and a friendly manner. One family singled out Captain Boben as a highlight, and another group appreciated a captain who pointed out unsafe behavior by other operators. On the other hand, some departures had little spoken information, with a recorded guide used instead. This is best viewed as a boat excursion with some guiding, not a fully narrated history tour.

Basic comfort deserves thought. The ride can be windy and wet, especially at speed. Bring sunscreen, a hat you can secure, swimwear, a towel, and a light layer for the ride back. Water is not advertised as included, and one person specifically wished it had been offered, so carry your own bottle.

Timing, cruise ships, and the 24-hour rule

The meeting point is Hawaii Boat Tours Kotor at Park Slobode 1, Kotor. You should arrive 30 minutes before departure, even if that feels early. The dock can be confusing when several boat companies are gathering at once, and finding the right representative may take time.

This warning is especially important if you arrive by cruise ship. Kotor is a tender port, and getting from the ship to shore can take far longer than expected. One party spent three and a half hours waiting to reach the port after a medical emergency delayed disembarkation. They missed the departure by only a few minutes and could not move to a later trip.

The operator does not promise last-minute changes, and the cancellation terms are strict inside 24 hours. You can cancel for a full refund up to 24 hours before the start time. If poor weather cancels the trip, you should be offered another date or a full refund. The same applies if the minimum number of participants is not reached.

For a cruise visit, book only if your ship’s arrival schedule leaves a very wide margin. If you want the least risk, a cruise-arranged excursion may offer better protection against tender delays, though it may cost more.

Who will enjoy this Kotor boat tour?

I would choose this trip if you want to see several famous sights in one morning or afternoon and enjoy a fast, open-water ride. It suits active couples, families with older children, and anyone who wants swimming, coastal views, and unusual military sites without arranging separate transport.

It is also a good fit if you value range over depth. You see the Blue Cave, submarine tunnel, Mamula Fortress, Our Lady of the Rocks, and Perast in one compact outing. Each stop is short, but the route gives you a strong sense of the bay and its outer coast.

I would think twice if you need a smooth ride, extensive historical commentary, guaranteed cave access, or plenty of personal space. The tour can feel rushed, and the Blue Cave may be crowded or inaccessible. A private trip is the better match if comfort and flexibility matter more than price.

At $32.53, the value is fair when the weather is good, the boat is comfortably filled, and you get the full route. It feels less convincing when the cave is closed, the ride is rough, or a fuel stop and heavy traffic reduce the time at the sights. That is why the forecast and your tolerance for group outings matter as much as the low price.

Should you book it?

Book this tour if you want an affordable speedboat sampler of Kotor Bay and you can accept a little uncertainty. The strongest version of the trip includes a glowing cave, a refreshing swim, a quick look at Our Lady of the Rocks, and the memorable experience of entering a submarine tunnel.

I would book it for a calm-weather day, arrive early, bring water and your own snorkeling mask, and avoid scheduling it too close to a cruise departure. If you are visiting on a ship, leave a large buffer for tendering. If you want a quiet, spacious, deeply narrated outing, choose a private boat instead.

The tour’s best assets are its route, scenery, and capable captains. Its weak points are crowding, inconsistent commentary, rough water, and the simple fact that the Blue Cave cannot be controlled. Know those limits, and the $32.53 price can buy you a memorable slice of Montenegro’s coast.

FAQ

How long does the boat tour last?

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

Where does the tour begin?

It begins at Hawaii Boat Tours Kotor, at Park Slobode 1 in Kotor, Montenegro.

Where does the tour finish?

The boat returns to the same meeting point in Kotor.

Is entry to the Blue Cave guaranteed?

No. Sea conditions, water level, waves, and weather can prevent safe entry.

Can you swim inside the Blue Cave?

Swimming inside the cave is not guaranteed. Depending on safety conditions and crowding, swimming may take place at a nearby spot outside the cave.

Is snorkeling included?

The Blue Cave area is suitable for swimming and snorkeling when conditions allow. The available snorkeling equipment may be limited, so bringing your own mask can be useful.

How much time is spent at Our Lady of the Rocks?

The planned stop lasts about 20 minutes.

Does the tour visit Perast?

The boat cruises to and around Perast, allowing you to see its old buildings, churches, palazzos, and defensive towers. The provided schedule does not list a separate long walking visit in town.

How many people can join the activity?

The activity may have up to 80 participants overall, while individual boat capacity is smaller. The operator states that its boat has a licensed capacity of 14 people including the captain, though group size can affect comfort.

Can you cancel for a refund?

You can cancel up to 24 hours before the start time for a full refund. Changes or cancellations made less than 24 hours before departure are not accepted for a refund.