Blue cave, Mamula island, Submarine tunnels and Our lady of the Rocks (3h)

Blue water, old forts, and a very fast boat. This three-hour speedboat trip from Kotor packs the Bay of Kotor, Blue Cave, Mamula Island, submarine tunnels, and Our Lady of the Rocks into one lively outing. I like the mix of scenery and history, and I like the price: $42.41 gives you a lot of Montenegro for a half day. The main trade-off is the long, sometimes bumpy ride to the cave, with limited time at each stop.

The captain can make or break this experience. Several captains have been praised for smooth boat handling, good explanations, photo help, and thoughtful weather adjustments. Still, service is not perfectly consistent, and one poor account describes rude handling of a life jacket. Check the sea conditions, and do not expect a quiet sightseeing cruise.

Key points at a glance

• A fast route to the Blue Cave: The ride takes about 1 hour and 10 minutes before reaching the cave, so the journey is a major part of the experience.
• Swimming is possible: Time is provided near the Blue Cave, but you swim from the boat rather than from a beach, and there may be nothing to hold on to.
• Mamula adds a darker historical note: The small, circular island sits at the entrance to the Bay of Kotor and is seen along with old submarine tunnels.
• Our Lady of the Rocks is the cultural stop: The artificial island and its church offer a sharp change from speedboat thrills. Church entry costs €1.50.
• Good value for cruise passengers: The meeting point is close to the tender landing, and the boat returns to the same place after about three hours.
• Expect a small group, not solitude: The stated maximum is 20 people, though some departures have had fewer passengers.

Why this three-hour trip works

I see this as a sampler of Montenegro’s coast rather than a slow, reflective boat tour. In a short stretch of water, you get limestone shores, old settlements, open sea, a glowing cave, military structures, swimming, and a famous island church.

That variety is the strongest reason to book. If you have only one free morning in Kotor, the trip shows you sights that are difficult to connect on foot or by road. The speedboat also gets you out of the inner bay and toward the Adriatic, giving you a different view of the coast than you get from Kotor’s old town.

The price is fair for the amount covered. You receive bottled water, transport by boat, a captain, and stops at several major sights. Food, drinks, and the €1.50 church admission are extra. At $42.41 per person, this is especially attractive for a family or cruise passenger who wants a broad outing without committing to a full-day excursion.

The catch is pace. Three hours sounds generous until you account for the outward ride, return ride, docking, and several stops. This is a see a lot, linger a little kind of trip.

From Kotor Bay to the open water

The trip begins at CQG9+H6W in Kotor, near public transport and close to the area used by cruise tenders. Finding the exact point may require a little attention, but it is described as easy to reach once you are in the right area. The experience ends back at the same meeting point, which matters if you have a ship departure or another activity planned.

The first stretch takes you along the Bay of Kotor. From the boat, you see a shoreline lined with old fishing villages, thick greenery, stone buildings, and church towers. The bay is often called a fjord, though its exact geological classification is more complicated. For your purposes, the useful point is simple: steep mountains and calm water create a dramatic setting.

Your captain may provide running commentary in English, sometimes with recorded information. The best departures have featured engaging captains who explain the places clearly and stop long enough for photographs. One captain, Andrej, was singled out for being friendly and well informed, while other praise focused on captains who handled the waves smoothly and helped with pictures.

The trip out is also where you should judge the water. Several people found the ride choppy, especially toward the cave. The front seats get the strongest bumps. If you enjoy a lively ride, that can be part of the fun. If you suffer from motion sickness or back pain, sit farther back, watch the forecast, and think carefully before booking.

The Blue Cave after 1 hour and 10 minutes

The Blue Cave is the main prize for many people. It has two entrances: one broad but low, the other narrow and tall. Sunlight entering through the water produces the famous blue glow, making this a strong photo stop even if you never get in the sea.

The cave is reached by boat, and the scheduled stop lasts about 20 minutes. That is enough to look around and take photographs, but it is not a long cave visit. Boat traffic can also affect the experience. At busy times, several speedboats may be maneuvering inside, and the stay can feel shorter than expected.

Swimming is one of the most enjoyable parts of the outing. Some departures include time near the cave or at a nearby cove, with passengers entering the water from the boat. You may be able to snorkel or swim, but the supplied details do not promise a beach stop. One important practical point is that you might be swimming in deep water with no nearby handhold, so bring confidence in the water and do not assume a floating platform will be available.

Life jackets are available on the boat, but the handling of swimming equipment appears to depend on the captain and safety rules. If you do not swim, tell the crew before entering the water and follow their instructions. Families with children should take this part seriously, especially because there may be nothing to grab once you are in the sea.

Bring a swimsuit, towel, sunscreen, and a waterproof phone pouch. Bottled water is included, but food and other drinks are not. Rain gear has been provided on at least some wet departures, though I would still carry a light waterproof layer because weather can change quickly on the water.

Mamula Island and the submarine tunnels

Mamula, also called Lastavica, is an uninhabited circular islet at the entrance to the Bay of Kotor. It lies between the Prevlaka and Luštica peninsulas, about 6.3 kilometers from Herceg Novi, and measures roughly 200 meters across.

Its position gives it a clear military purpose. The island is associated with a round fortress, and the nearby submarine tunnels were built into the coast for naval use. These old tunnels are among the more unusual sights on the route. You do not simply get another pretty bay. You see how the coastline was adapted for defense and shipping.

The supplied schedule does not give a separate time length for Mamula or the submarine tunnels, so expect this portion to be brief or viewed from the boat unless the captain says otherwise. That distinction matters. If you want to walk through a fort or spend time ashore, this three-hour outing may not provide that kind of visit.

Still, the stop adds useful context. The Bay of Kotor is not only about postcard views. Its location at the meeting point of inland waters and the Adriatic made it important for trade, naval movement, and defense. A good captain can connect those facts to what you see from the boat.

Our Lady of the Rocks in Perast

Our Lady of the Rocks is the cultural heart of the trip. The small island lies off Perast and is artificial, created over time by placing rocks in the water and sinking old ships loaded with stones.

The church is the largest building on the island, and a museum is attached. There is also a small gift shop and a navigation light at the western end. The visit lasts about 20 minutes, so you have time to see the island and enter the church if you choose.

Church admission is not included and costs €1.50. That is a modest extra charge, but carry some euros if you want to go inside. If you prefer not to pay, the island itself still offers an unusual view of Perast, the bay, and the surrounding mountains.

This stop gives the trip a welcome change of rhythm. After the speed, spray, and cave swimming, you get a short walk and a piece of local religious and maritime tradition. I would use the time to look closely at the island’s construction. It is not a natural patch of land, and that fact makes the setting more interesting than a standard church visit.

The captain matters more than the boat

The strongest praise for this experience centers on the people running it. Good captains have been described as friendly, careful, entertaining, and able to explain the stops in English. Some play music, take photographs, and adjust the route when weather affects the original plan.

Boat handling is especially important. The ride can be rough, and a skilled captain can reduce the shock of hitting waves. You may still get bounced around, but careful steering helps you feel secure. The best accounts describe captains who kept the boat moving smoothly and returned to the dock on time.

The weaker side is inconsistency. One person found the spoken explanations too fast and difficult to understand, with much of the information delivered by recording. Another described poor assistance when climbing back aboard after swimming. A separate complaint concerned loud music with explicit lyrics and a captain who behaved badly around a life jacket.

These problems do not appear to define every departure, but they are worth noting. If you need patient physical assistance, clear slow explanations, or a quiet ride, say so at the start. Service quality seems closely tied to the individual captain and the day’s conditions.

Group size, comfort, and safety

The maximum group size is 20 people. Some departures have had around eight or nine passengers, while another account describes 13 people aboard. A smaller group makes it easier to hear the captain, move around for photographs, and get back into the boat after swimming.

The speedboat format is more exposed than a large cruise vessel. You feel the wind, spray, and waves, which is part of the appeal. It also means you should wear clothes that can get wet and secure hats, sunglasses, and phones.

Safety depends on sensible choices. Stay seated when the boat is moving, hold on during rough sections, and follow instructions near the cave and while swimming. The reviews include strong praise for careful driving, but also complaints about overcrowding and inattentive behavior on one departure. I would not ignore those concerns, especially if you are booking for children.

This is not a good choice if you need step-free access or regular help boarding. The supplied information says most people can participate, but it does not promise assistance with ladders or boat transfers. Ask before booking if you have mobility concerns.

Is $42.41 good value?

Yes, for the right kind of day. The fare covers a wide route and several distinct sights for less than many full-day coastal excursions. You also save time compared with trying to arrange separate transport to the cave, Mamula, and Perast.

The value comes from variety and speed, not from long visits. You are paying for access to a wide stretch of coast, not a private guide at every stop. Bottled water is included, but you should budget for your own food and drinks, plus €1.50 for the church.

For a family, the price can work well if everyone enjoys boats and swimming. For a couple, it offers plenty of photographs and a memorable trip without taking the entire day. Cruise passengers get particular value because the meeting point is close to the tender area and the boat returns in about three hours.

If you dislike fast boats, crowded caves, or short stops, the same price may feel less attractive. A private charter or slower boat trip would give you more control, but it would likely cost more.

Who should book this speedboat outing?

I would recommend it to you if you want to see several major coastal sights in one compact trip. It suits active families, first-time visitors to Kotor, cruise passengers with a limited shore visit, and anyone who enjoys swimming and open-water scenery.

It is also a good match if you value a lively captain-led ride over a formal historical tour. The best departures combine useful information with music, humor, smooth handling, and plenty of photo chances.

I would be cautious if you get seasick, need substantial help boarding, or want a quiet and highly structured experience. You should also reconsider if swimming from a boat in deep water sounds uncomfortable. The Blue Cave is beautiful, but it is not a calm beach afternoon.

Weather can change the plan. The operator requires good conditions and may offer another date or a full refund if poor weather forces cancellation. You can cancel for a full refund up to 24 hours before the start time, but changes made inside that window are not accepted.

Final verdict: book it for variety and value

I would book this tour if I had three hours in Kotor and wanted a broad taste of the bay and nearby coast. The scenery, Blue Cave, skilled captains, and low price make it a strong choice, and the 4.8 rating from 575 ratings, with 96 percent recommending it, supports that overall picture.

Go in with realistic expectations. The ride to the cave is long, the sea can be rough, the cave may be crowded, and the stops move quickly. Bring swim gear, sit where the motion suits you, keep €1.50 for the church, and confirm any mobility or swimming concerns before departure.

FAQ

How long does the boat trip last?

The experience lasts approximately three hours and ends back at the meeting point in Kotor.

Where does the tour begin?

It begins at CQG9+H6W in Kotor, Montenegro, near public transportation and close to the cruise tender area.

Is the Blue Cave reached by boat?

Yes. The Blue Cave is accessible by boat and takes about 1 hour and 10 minutes to reach from the start of the route.

Is swimming included?

Swimming time may be provided near the Blue Cave or at a nearby cove. You swim from the boat, and the experience does not promise a beach stop.

Is admission to Our Lady of the Rocks included?

No. Entry to the church costs €1.50. Food and drinks are also not included, but bottled water is provided.

What happens if the weather is bad?

The experience requires good weather. If it is canceled because of poor conditions, you can be offered another date or a full refund.