Kotor: Boat Cruise with Blue Cave Swim and Submarine Base

The best part of this cruise is the variety packed into three hours. You race past Perast, Tivat, Porto Montenegro, and Herceg Novi, then stop at a former prison island, a military submarine tunnel, and a sea cave glowing blue in the right light. I especially like the fast, open-air boat ride and the chance to swim in clear water rather than spend the whole trip looking over the rail.

I also like the mix of places: Our Lady of the Rocks brings art and local tradition, while Mamula and the submarine tunnels add a darker side of Montenegro’s past. The main drawback is simple: three hours is tight, and the Blue Cave can be crowded. Despite the tour’s name, the actual swim may take place near the cave or in a quieter cove rather than inside it.

Key things to know before boarding

• The Blue Cave is the headline stop: You usually enter for photos, then swim and snorkel nearby in clear water with fish.
• The boat ride is part of the attraction: High-speed runs connect the stops and give you wide views of the Bay of Kotor.
• History is built into the route: You see Mamula’s former concentration camp fortress and abandoned Yugoslav submarine tunnels.
• Our Lady of the Rocks costs extra: The island visit is included, but church entry costs 2 euros per person.
• Small groups can make a big difference: Boats can carry up to 22 people, but some departures have had only six to eight passengers.
• Bring warmth as well as swimwear: The boat has shade and sea spray, and October can feel chilly on the water.

A fast route through Kotor Bay and beyond

At $56 per person, this is a busy three-hour outing rather than a slow sightseeing cruise. You meet MontenegroGlobe near shopping center Kamelija, just a few minutes from Kotor’s old town and the Port of Kotor, then walk to the speedboat.

The boat gives you a different view of Kotor than you get from the old city streets. The mountains rise sharply around the bay, fishing villages and waterfront homes slide past, and the water opens up as you head toward the outer bay. You can listen to music, use the onboard Wi-Fi, and keep drinks cold in the boat’s fridge. A bottle of water is included, but food and extra drinks are not.

The ride is quick and sometimes lively. That makes the cruise exciting, but it also means you should expect wind, spray, and some bouncing when the water is rough. If you want a quiet, shaded boat trip with long talks at each stop, this is not the right format. If you want to see a lot in half a day, it works well.

The boat type and group size can vary. Some departures have had just six to eight people on a boat designed for 22, leaving plenty of room. A clean, newer boat with shade has also been noted, though you should not assume every departure will feel identical.

Our Lady of the Rocks and the story beneath the island

The first major stop is Our Lady of the Rocks near Perast, usually for about 20 minutes. The island is artificial, built up over centuries by local fishermen who placed rocks and old boats in the bay. That makes it more than a scenic photo stop. It is a piece of local tradition shaped by repeated small acts.

You can walk around the island and take in the views back toward Perast and the surrounding mountains. The church is the main attraction, but admission is not part of the tour. Entry costs 2 euros per person.

Inside are 68 paintings by Tripo Kokolja, a famous Baroque artist from Perast. The visit is brief, so you will not have time for a long museum-style examination of every work. Still, the church adds useful context to what might otherwise be a quick island photo stop.

I like this opening because it eases you into the day. You begin with history, architecture, and local custom before the boat turns toward the more dramatic outer bay. The limitation is timing. If the church is important to you, keep an eye on the clock and be ready to return to the boat when asked.

Mamula Island and a difficult wartime past

The boat then heads toward Mamula Island, where you have about 10 minutes for a photo stop and a short explanation from the skipper. The fortress is hard to miss. It occupies the island’s rocky edge and was built as a defensive structure.

During World War II, the Italians converted the fortress into a concentration camp. That history gives the stop a more serious tone than the bright water and summer music might suggest. Your guide explains the role of the island, helping you see it as more than an attractive ruin in the bay.

The stop is viewed from the boat rather than treated as a long shore visit. That is useful if you want to cover several sites in one morning or afternoon, but it can feel brief if you are especially interested in military history. Guides such as Peter, Andre, Marco, Marko, and Andreas have been praised for explaining the sites clearly, and their personality matters here because the time on site is short.

I would listen carefully during this section. Mamula is one of the places where a good explanation changes what you see. Without context, it is simply a fortress. With context, it becomes a reminder of how attractive coastal locations can have painful pasts.

The Blue Cave, clear water, and the reality of crowds

The Blue Cave is the tour’s big visual moment. Sunlight enters through an opening in the cave and reflects through the water, giving the rock walls a blue glow. The effect changes with the angle of the sun, the water, and the number of boats moving around the entrance.

You usually have time to enter the cave for photos, then swim and snorkel in the surrounding water. A mask is provided, and life-saving equipment is carried onboard. Several departures have included an additional swim in a quieter cove, sometimes with clearer water and more fish than the cave itself.

This distinction matters. The tour is advertised around a Blue Cave swim, but the cave can be crowded with other boats. You may not swim inside the cave at all, especially when traffic is heavy or conditions make it awkward. Some captains adjust the order of the stops so the boat reaches the cave during a quieter period. That flexibility can improve the experience, but it cannot guarantee solitude.

The water is the star here. If you are a confident swimmer, you can enjoy the clear sea and look for fish with the supplied mask. If you are nervous in open water, tell the guide before getting in. Andre, for example, has helped hesitant swimmers back onto the boat and provided life jackets for people who did not feel comfortable swimming without support.

Bring a towel, swimwear, and a camera. You should also bring sunglasses, but secure them well during the fast sections. A waterproof phone case would be useful, although it is not listed as included.

The former submarine tunnels

After the swimming stop, the boat heads toward the former submarine tunnels. These openings were built by the Yugoslav Army and cut into the coast so submarines could hide from view. You stop near the entrances for about five minutes.

This is a short visit, but it is one of the most unusual parts of the route. The tunnels are not polished attractions. Their appeal comes from seeing a piece of military infrastructure in its original setting, with the boat entering the same stretch of coastline once used for naval concealment.

You do not get a long underground tour. The boat pauses near the entrances, and the guide explains what you are seeing. That makes the stop best for people who enjoy seeing real places with a practical story behind them, rather than expecting a developed museum or a walk through the tunnels.

The speedboat makes this stop possible within a three-hour schedule. By road, reaching these coastal points would be slower and less scenic. From the water, you see the tunnels as part of the coast instead of as an isolated attraction.

Perast, Tivat, Porto Montenegro, and Herceg Novi from the water

Between the stops, the boat passes several well-known waterfront places. Perast is especially photogenic, with old stone buildings close to the water and the mountains behind them. You see Tivat and Porto Montenegro from the bay, where modern marina development provides a contrast to the older settlements.

Herceg Novi appears farther along the route, adding another change in scenery. The point is not to explore each town on foot. Instead, you get a fast-moving overview, with time to photograph the shoreline and see how the bay changes from one community to the next.

This is where the speedboat earns its keep. The ride is not just transport between attractions. You get open views, sea air, and a changing sense of scale that is hard to find on a standard road transfer.

Still, take realistic expectations. You will not have time to visit every town properly, shop, or sit at a waterfront café. If Perast or Herceg Novi is high on your list for a walking visit, plan a separate stop on another day.

Guides, safety, and the feel of the trip

The guide can shape this experience as much as the scenery. The company uses English-speaking skippers, and names that have come up on departures include Peter, Andre, Marco, Marko, Andreas, and Igor. Their roles go beyond steering: they explain the history, help with swimming, give local suggestions, and adjust the plan when conditions allow.

The strongest pattern is attentive handling on the water. Guides have checked on nervous swimmers, offered life jackets, helped people climb back aboard, and changed the timing to avoid the busiest period at the cave. One captain extended the outing briefly to shelter from a storm and supplied raincoats afterward. That kind of judgment is valuable on a water trip, where weather can change your plans quickly.

Safety equipment is included, and the boat carries life-saving gear. You should still pay attention to the safety instructions and be honest about your swimming ability. The boat is not suitable for wheelchair users, and the activity is not suitable for people over 95.

Music and jokes can give the trip a holiday mood, especially on the long runs between stops. If you prefer quiet sightseeing, the sound level may not suit you. The overall tone is active and social, not formal or meditative.

Timing, weather, and what to pack

The cruise lasts three hours, with several short speedboat runs and stops of about 5 to 25 minutes. That schedule keeps the day moving, but it leaves little room for delays. Arrive ready to board and keep your belongings compact.

Morning departures can be pleasant in hot weather. The boat’s shade and sea spray also help on very warm days, with one departure handling temperatures around 35 degrees Celsius comfortably. On the other hand, October can be cold on the open water. A coat is a smart addition, especially for a noon departure when the wind picks up.

Pack:

• Swimwear and a towel
• Sunglasses
• A camera or phone
• A light jacket outside the hottest months
• Comfortable clothing that can handle sea spray

The tour can be cancelled for poor weather or if the minimum group size is not reached. If you are visiting Kotor on a tight schedule, leave some flexibility around the booking. Free cancellation is available up to 24 hours before departure, and you can reserve now and pay later.

Parking in Kotor is notoriously difficult. If you arrive by car, allow extra time and consider walking from your accommodation when possible. The MontenegroGlobe office near Kamelija is close to the old town and port, which makes it easier if you are already staying in central Kotor.

Is $56 good value for three hours?

At $56, the price is fair for the amount covered. You get boat transport, a guide, water, a snorkel mask, life-saving equipment, and four distinct sightseeing themes: a traditional island, a former wartime fortress, a military tunnel, and a sea cave.

The value is strongest if you do not have your own boat and want to see the outer parts of the bay without arranging several separate trips. A private boat would give you more control, but it would cost more. A slower public boat might be cheaper, but it would not give you the same speed or swimming stop.

The extra 2 euros for the church is small, though you should carry some cash in case card payment is not available. Food and additional drinks are not included, so eat beforehand or bring what you need if permitted by the operator.

I would not choose this tour for a full historical study of Mamula or a proper visit to every town on the bay. I would choose it for a compact day on the water that combines scenery, swimming, local stories, and a bit of adventure.

Who should book this cruise?

This trip suits couples, solo visitors, families with older children, and small groups who want an active half-day. Solo passengers can meet other people onboard, especially when the group is small and the boat has room to spread out.

It is also a good option if you are staying in Kotor and want to see more than the old town. The route gives you a taste of Perast, Tivat, Porto Montenegro, Herceg Novi, Mamula, and the submarine tunnels without requiring separate transport.

You should think twice if you dislike speed, open water, or brief stops. The boat moves quickly, and the Blue Cave may be crowded. Non-swimmers can still join, since life jackets are available, but the swimming portion will be more enjoyable if you are comfortable getting into the sea or happy to watch from the boat.

Should you book it?

I would book this cruise if you want the best mix of scenery, swimming, and history in three hours. The boat gives you access to places that are awkward to reach by road, and the guides add useful context to Mamula, the submarine tunnels, and Our Lady of the Rocks.

Book with sensible expectations: the Blue Cave is not guaranteed to be quiet, swimming may happen outside the cave, and the schedule moves quickly. Pick a warmer time of day in spring or autumn, bring a jacket outside midsummer, and choose this trip for the full experience rather than for one perfect cave photograph.

FAQ

Where does the Kotor Blue Cave cruise meet?

You meet at the MontenegroGlobe agency near shopping center Kamelija, a few minutes from Kotor’s old town and the Port of Kotor.

How long does the boat trip last?

The cruise lasts three hours, including the speedboat rides, sightseeing stops, swimming, and the return to Kotor.

Is swimming inside the Blue Cave guaranteed?

No. You enter the cave for views and photographs, but swimming may take place nearby or in a quieter cove. Crowds and sea conditions can affect the plan.

Is the church at Our Lady of the Rocks included?

The island visit is included, but entry to the church costs an additional 2 euros per person.

What is included in the price?

The price includes transportation by boat, a bottle of water, a snorkel mask, and life-saving equipment. Food and extra drinks are not included.

What should I bring?

Bring sunglasses, swimwear, a towel, and a camera. A light coat is wise in cooler weather, since it can feel chilly on the open water.