Kotor: Blue Cave, and Full Bay Speedboat Tour

The Bay of Kotor moves fast. This three-hour speedboat trip packs a lot into a short outing, from the artificial island of Our Lady of the Rocks to an old submarine tunnel and a swim in the Blue Cave. I like the small group of up to 10 people and the lively mix of scenery, history, and sea time. I also like that water, safety gear, and a snorkel mask are included. The main drawback is the brisk pace, and rough seas can force the boat to skip the Blue Cave or change the route.

This is a good choice if you have only one morning or afternoon in Kotor and want to see far more than the Old Town. Just keep your expectations in check: the ride is built around quick stops, not long museum visits. One piece of feedback points to limited commentary and an itinerary that did not fully match expectations, so I would confirm the day’s route with your skipper before leaving the marina.

Key points at a glance

• Our Lady of the Rocks: Spend about 20 minutes on the artificial island, with the church and museum available when opening hours allow.
• Blue Cave swim: You get roughly 20 minutes in the cave, weather and sea conditions permitting.
• Fast coastal route: The speedboat makes it possible to reach Mamula Island and the Lustica Peninsula within a three-hour trip.
• Submarine history: Stop at a former military tunnel where submarines were once hidden from view.
• Small-group setting: The boat holds no more than 10 participants, a useful advantage over large excursion boats.
• Simple marina meeting point: Cross the main road in front of Kotor’s Old Town and enter Marina Kotor at least 15 minutes early.

Why this three-hour trip works well

Kotor’s bay is large, and the most interesting sights are spread along its shores. On foot, you can explore the Old Town and perhaps climb toward the fortress, but you cannot reach the outer bay, Mamula Island, the submarine tunnel, and the Blue Cave in one short outing.

The speedboat changes that. You spend less time waiting between stops and more time moving through the bay. The boat ride itself is part of the attraction, with open views of the water, steep coastal slopes, small settlements, and the narrow Verige Strait.

At $55 per person, I see this as a solid value if you want variety. The price covers a three-hour sightseeing boat ride, a guide, water, safety equipment, and a snorkel mask. It also includes the visit to Our Lady of the Rocks Island. You pay an additional €2 only if you want to enter the church museum.

The value is less convincing if your main goal is a long swim or a careful visit to the church. You will spend a fair amount of the three hours in transit, especially on the 70-minute return ride to Kotor. That ride gives you fine views, but it leaves little room for delays.

Meeting the boat at Marina Kotor

The meeting point is easy to find once you know the trick. From the main gate of Kotor’s Old Town, cross the main street and enter Marina Kotor, where the sailing boats and yachts are moored. The tour’s front desk is in the marina, and Kristina is scheduled to welcome you there with the skipper.

Arrive at least 15 minutes early. That gives you time to find the desk, check in, and settle aboard without turning the departure into a small sprint. Summer parking in Kotor can be difficult, so I would avoid relying on a last-minute parking space if you are arriving by car.

The group is limited to 10 people. That matters on a small speedboat. You should have a better view than you would from a crowded sightseeing vessel, and getting in and out at the stops should be more manageable. The guide speaks English and Serbo-Croatian.

The boat trip includes safety equipment, and staff pay attention to boarding and swimming safety. One especially positive account praised the skipper’s calm manner and his care when people entered and left the boat, as well as during the Blue Cave swim. The skipper’s name is not provided, so ask for it when you arrive if you want to note it down.

Perast and Our Lady of the Rocks

The first notable sight is Perast, viewed during the ride and from the water. The boat makes a short photo stop before continuing to Our Lady of the Rocks, one of the most recognizable places in the Bay of Kotor.

The island is artificial, built up over time in the water. Its church grew from a local story about two brothers who found a painting of the Madonna and Child on a rock. The church was then built at that spot, giving the small island its unusual character and its strong place in local tradition.

You have around 20 minutes for the island visit. That is enough to walk around, take photographs, and see the church from outside. If the church and museum are open, you can also go inside. Museum admission costs €2 and is not included in the tour price.

Opening hours vary by season:

• In April, May, September, and October, the church and museum are open until 5 p.m.
• In June, they are open until 6 p.m.
• In July and August, they are open until 7 p.m.

You can still visit the island even when the church or museum is closed. The phrase skip the line should not shape your expectations here. It does not apply to entrance at Our Lady of the Rocks, which has a small church and a limited interior. The stop is mainly about the island setting, the story, and the view across the bay.

Dress sensibly if you plan to enter. Swimsuits are not acceptable inside the church, so bring a cover-up or wear something suitable over your swimwear.

The former submarine tunnel

After Our Lady of the Rocks, the speedboat heads toward a former submarine tunnel. The stop lasts about five minutes, so this is a look from the boat and a quick photo opportunity rather than a full historical visit.

The tunnel was used by the army to hide submarines along the coast. Its plain entrance gives you a glimpse into the military side of the bay, which is easy to miss when all attention is on churches, villages, and water views.

Do not expect a long explanation or an extended walk inside. The value is in seeing the unusual structure from the water and understanding how the sheltered coastline once served a practical military purpose. If you like old defenses and unusual coastal sites, this short pause adds welcome variety to the day.

Mamula Island and the outer bay

The boat then continues toward Mamula Island. You get about five minutes for photographs and sightseeing, not a landing.

Mamula is associated with a former prison from the Second World War. Seeing it from the water gives you a sense of its isolated position and defensive role. The stop works best as part of the wider coastal story: religious heritage at Our Lady of the Rocks, military concealment at the submarine tunnel, and an island prison farther out toward the open sea.

The ride to this part of the route also changes the feel of the excursion. The inner bay is more sheltered and closely enclosed, while the outer section can feel more exposed. That difference is important when sea conditions are rough. Your skipper may alter the plan for comfort and safety, and the Blue Cave can be removed from the route if waves make the visit unsuitable.

Swimming inside the Blue Cave

The Blue Cave is the tour’s main natural attraction. The boat follows the coast of the Lustica Peninsula and reaches the cave for a swimming stop of about 20 minutes.

The color inside the cave depends on sunlight entering through the water and rock openings. On a good day, the water takes on the blue appearance that gives the cave its name. You can swim with the provided snorkel mask, though this is a short stop rather than a full snorkeling session.

Bring your own towel, swimwear, sunscreen, and sunglasses. The boat provides water and safety equipment, but the supplied details do not promise storage for every personal item, so keep loose belongings secure.

The cave visit is weather dependent. High waves or difficult conditions can make entry unsafe, and the boat may skip the stop. That is not a minor footnote. If swimming in the Blue Cave is the main reason you are booking, choose a day with a flexible schedule and understand that the skipper has the final say.

Spring and autumn can also feel chilly, both on the water and after swimming. A warmer layer is recommended in April, May, September, and October. Even in summer, a light jacket can be useful on a fast-moving boat.

The long ride back to Kotor

The return to Marina Kotor takes about 70 minutes. This is the longest single section of the trip, but it is also your chance to settle back and watch the bay from the water.

You will pass coastline that is difficult to appreciate from the road. The speed and open seating make the trip feel active, though the same speed can be tiring if the water is choppy. If you are sensitive to motion, sit where the boat feels most stable and avoid arriving hungry or dehydrated.

The long return also explains why the excursion cannot simply add more time at each stop. The route covers a wide part of Boka Bay, and the boat must make the full journey back to Kotor within three hours.

A small amount of commentary can make a large difference on this ride. One mixed account specifically flagged a lack of explanation and a route that did not match the expected plan. I would ask the skipper to outline the order of stops before departure. That simple question can prevent confusion if weather or local conditions require changes.

What the price includes, and what it does not

The $55 fare includes:

• A three-hour speedboat excursion
• The visit to Our Lady of the Rocks Island
• A professional guide
• Water
• A snorkel mask
• Safety equipment
• Hotel pickup and drop-off, where arranged by the operator

The only stated extra cost is €2 for the Our Lady of the Rocks Museum. That is modest, but the museum is optional and opening hours vary.

For the price, I think the tour offers good coverage. You see cultural, military, and natural sights in one outing, and the small group is a real plus. You are not paying only for a boat ride to one swimming spot.

The trade-off is depth. The church visit is short, Mamula is a photo stop, and the submarine tunnel is seen briefly. If you prefer slow travel and long conversations at each site, a private boat or a longer tour may suit you better.

Who should book this boat trip?

I would recommend it to you if you want a compact introduction to the Bay of Kotor and prefer active sightseeing. It suits couples, friends, and families with older children who can manage a speedboat, short stops, and a swim from the boat.

It is especially useful for a short stay in Kotor. In three hours, you can see sights that would otherwise require separate transport and planning. The small group also makes it more personal than a large cruise-style excursion.

I would hesitate if you use a wheelchair, since the activity is not suitable for wheelchair users. I would also think twice if you dislike open-water swimming, fast boat rides, or changing plans due to weather.

The trip is not ideal for a serious museum visit. It is also not the best match if you need a guaranteed Blue Cave swim. The cave is the most weather-sensitive part of the route.

Practical advice before you go

Wear shoes that are comfortable for a boat and a short island visit. Bring a towel, swimsuit, sunscreen, sunglasses, and a warmer layer outside the hottest summer months. Carry your passport or ID card, which is listed as required.

If you want to enter the church, do not arrive in swimwear alone. A light shirt, wrap, or other cover-up will solve the problem.

Check the starting time when booking, since several departure times may be available. Free cancellation is allowed up to 24 hours before departure, and you can reserve now and pay later, which is useful when the weather forecast is uncertain.

The operator may cancel the trip in unfavorable conditions. That is worth accepting for a boat excursion that reaches the outer bay and a cave. A safe change to the route is better than forcing a swim in rough water.

Should you book it?

Book this tour if you want maximum variety in three hours: an unusual island church, an old submarine shelter, Mamula Island, open-water views, and a possible Blue Cave swim. At $55, the combination is fairly priced, particularly with a 10-person limit and equipment included.

Skip it if you want long visits, guaranteed swimming, or detailed commentary at every stop. Before boarding, ask Kristina or the skipper to confirm the planned route and whether current conditions allow the Blue Cave. That small check will help you decide if the day’s version of the trip matches what you want.

FAQ

Where does the tour start?

It starts at Marina Kotor. From the main gate of Kotor’s Old Town, cross the main street and enter the marina with the sailing boats and yachts. The front desk is there, and you should arrive at least 15 minutes early.

How long does the boat tour last?

The tour lasts three hours. The return ride to Marina Kotor takes about 70 minutes, with the remaining time divided among the boat ride and stops.

Is the Blue Cave always included?

The Blue Cave is part of the planned route, with about 20 minutes for swimming. However, rough seas or difficult weather can require the skipper to skip it or change the itinerary for safety.

Is admission to Our Lady of the Rocks included?

The island visit is included. Entry to the church museum costs an additional €2. The skip-the-line arrangement does not apply to the church entrance.

What languages are available?

The live guide service is available in English and Serbo-Croatian.

What should I bring?

Bring your passport or ID card, sunglasses, swimwear, a towel, and sunscreen. A warmer layer is recommended in spring and autumn, when it can be chilly on the water.