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

The sea is the main attraction here. This three-hour speedboat trip links Kotor Bay with the Blue Cave, Our Lady of the Rocks, submarine tunnels, Perast, and Mamula Fortress, giving you a fast look at several of Montenegro’s best-known coastal sights. I like the mix of swimming, scenery, and unusual military sites, especially the ride through the old submarine tunnel.

I also like the price, about $32.53 per person, which is reasonable for a three-hour boat outing if the weather cooperates. The main catch is that the Blue Cave can be inaccessible or packed with boats, and the ride outside the bay may be rough and crowded.

The tour earns a listed rating of 4.9 from 1,104 reviews, with 97 percent of customers recommending it. That is strong, but the lower ratings point to real concerns about boat comfort, limited commentary, late departures, and difficulty changing times after booking.

Key points before you book

• Blue Cave access depends on the sea: Rough water, high water levels, or boat traffic can prevent entry or shorten your time inside.
• You may swim outside the cave instead: Captains sometimes use a nearby swimming spot when the cave is unsafe or too crowded.
• The speedboat ride can be bumpy: The open-water section is often choppy, especially with heavy boat traffic.
• Our Lady of the Rocks is a short, compact stop: Twenty minutes is enough for a quick look, though the island can feel crowded.
• The submarine tunnel is the surprise highlight: The boat enters the old military tunnel, offering a close view of its structure.
• Cruise ship timing needs care: Kotor is a tender port, and the boat leaves on schedule. Arrive at least 30 minutes early.

What the $32.53 price really buys you

At roughly $32.53, this is an inexpensive way to see several coastal sights in one outing. You are not paying for a full-day private charter or a slow, detailed cultural tour. You are paying for speed, access to places that are spread around the bay, and the chance to get into the water.

That makes the price good when the weather is calm, the boat is not overloaded, and the Blue Cave is open. The value drops quickly if you spend much of the three hours bouncing over rough water, waiting for fuel, or sitting outside a crowded cave.

I would think of this as a scenic boat adventure rather than a formal guided tour. Some captains provide useful explanations, while others offer only brief commentary or rely partly on recorded information. If you want detailed background on Kotor, Montenegro, or the coastal fortifications, this may feel thin.

The listed maximum is 80 people for the overall activity, but your actual boat may carry around 11 to 16 people according to the supplied experiences. That difference matters. A boat with 11 or 12 people may feel social but manageable. Sixteen people on a small craft can leave little space for bags, elbows, or easy photography.

Leaving Kotor for the open water

The meeting point is Hawaii Boat Tours Kotor at Park Slobode 1, close to the waterfront. The departure area can be busy, with several boats and tour groups gathering at once. Arriving 30 minutes early is the safest choice, even if some people find 15 minutes sufficient once they know where to go.

The boat ride begins with the dramatic walls and mountains around Kotor Bay. As you move away from the old town, the view opens toward steep hills, small settlements, and the wide water of the bay. The speedboat saves time, but it also changes the mood. This is not a gentle cruise with lots of room to stroll around.

Sit securely and expect spray. The ride becomes rougher once the boat reaches more exposed water, especially when many boats are running in the same area. Several accounts describe a long, bumpy ride to the cave, sometimes around 45 minutes each way. That timing can vary, but you should not expect the destination to be just a few minutes from Kotor.

Bring sun protection, and take a light layer in cooler weather. One May outing felt too cold for comfortable riding, while hot summer trips can leave you wishing for shade and water. The tour information does not promise bottled water, so bring your own if allowed and practical.

The Blue Cave, beautiful but not guaranteed

The Blue Cave is the headline stop. Sunlight enters through the underwater opening and reflects through the cave, giving the water its unusual blue color. The effect is most striking when the sea is calm and the boat can enter far enough for you to see the light change across the walls and water.

The scheduled stop is about 30 minutes, but that does not mean 30 minutes inside the cave. Conditions control everything. Heavy waves can make the entrance unsafe, while a line of boats can limit your time to only a few minutes. In busy periods, several boats may be waiting outside or moving through the same narrow space.

Swimming inside the cave should not be treated as guaranteed. Captains may take you to a nearby spot instead, where you can swim or snorkel for roughly 10 to 20 minutes. Some people find this just as enjoyable because the open water gives you more room. Others feel disappointed because the cave was the main reason they booked.

This is the most important expectation to set before you go: the tour can visit the Blue Cave without giving you a long swim inside it. Weather, water levels, safety rules, and boat traffic all play a part.

Snorkeling equipment may be limited. One account noted that there were not enough goggles for everyone who wanted to swim. If swimming is central to your plans, ask the operator what equipment is supplied and bring your own mask if you have one.

Safety deserves attention here. Most experiences praise the captains for handling waves and boat traffic, and several families felt well cared for. A few accounts raise concerns about missing safety instructions, uncomfortable speed, or poor handling of a minor injury. I would listen carefully to the captain, keep hold of the boat, and use the handrails when boarding after the swim.

Our Lady of the Rocks and the small town of Perast

The next major stop is Our Lady of the Rocks, the man-made island opposite Perast. The island is tied to a local legend involving a religious image found on a rock, and generations of people added stones and sank vessels to build the island.

You have about 20 minutes here. That is enough for a quick look at the church, the island setting, and the views back toward Perast. It is a compact place, so you do not need a long visit to understand its appeal. At busy times, the small island can feel crowded, and you may spend more time moving with the group than wandering freely.

The nearby town of Perast adds an important piece of context. Its narrow waterfront is lined with Baroque buildings, old palazzos, Catholic churches, and defensive towers. The setting is wonderfully compact, with one main street and a strong sense of a former maritime town.

The tour description presents Perast as part of the cruise, but the supplied timing specifically lists 20 minutes for Our Lady of the Rocks. Do not assume you will have a long independent visit in Perast. If the town is a priority, look carefully at the exact departure details before booking.

I like this part of the trip because it slows the experience down for a moment. The Blue Cave is all color and motion. Our Lady of the Rocks gives you a local story and a human-made landmark in the middle of the bay.

Inside the former submarine tunnel

The former submarine tunnel is one of the most unusual stops. Built into the mountain, these narrow entrances once sheltered military submarines. The boat takes you inside, allowing you to see the dark interior and the thick stone opening from the water.

The stop lasts about 10 minutes, so this is a quick look rather than a long historical visit. Still, it adds something different to the day. You are not just looking at beaches and churches. You are seeing a piece of the region’s military past in a place that is difficult to appreciate from land.

This stop is especially worthwhile when the Blue Cave cannot be entered. Several people found the tunnel one of the best parts of the outing, even in poor weather. The main limitation is commentary. Some captains explain the tunnel well, while others provide only a few words. One account praised the narration, while others wished for more information about its purpose and the wider history of the bay.

Mamula Fortress from the water

The boat makes a roughly 10-minute stop around Mamula Island. The fortress was used as a prison, and its isolated position gives the site a stark presence. From the boat, you can study the round stone fortifications and hear stories from the skipper.

This is a photo and storytelling stop rather than a full visit. The boat does not turn the outing into a long fort tour, and the supplied details do not promise that you will go ashore. Still, the island helps explain how the entrance to the bay was defended.

If your interests run toward military sites, this and the submarine tunnel make the tour more than a simple swimming trip. If you mainly want beach time, the stop may feel brief.

Boat comfort, group size, and guiding

The strongest praise goes to the scenery and the captains who handle the speedboat well. Captain Boben receives special praise for making a group of 11 feel safe and entertained, while other captains were credited with careful navigation around heavy boat traffic. Families with children aged seven and 13 also described feeling safe.

The weaker experiences focus on crowded seating and uneven service. A few accounts describe 13 to 16 people on a boat that felt too small, with some people unable to turn around comfortably for photos. Another account said there were not enough seats, while the operator stated that one boat had a licensed capacity of 14 including the captain.

That mixed picture means your experience may depend heavily on the boat assigned that day. A small group will make the ride much more pleasant. If you want room to spread out, a private boat is likely worth the extra cost.

Guiding is also inconsistent. Some captains explain the sights well. Others speak little English, play music, or give only short comments. One tour used recorded information to keep explanations consistent across languages. That can be clear, but it lacks the personal touch you get from a captain who enjoys telling local stories.

Do not book this expecting a museum-quality lecture. Book it for the water, the speed, and the unusual stops.

Timing problems for cruise ship passengers

Kotor is a tender port, meaning you may need a small ship tender to reach the waterfront. That can take far longer than expected, especially after a medical issue, rough water, or a crowded disembarkation period.

This tour leaves at a fixed time and does not appear flexible once the departure is close. Several people who arrived late after cruise ship delays were unable to board or change to a later departure. The operator’s policy requires cancellation or changes at least 24 hours before the start time, and late changes are not accepted.

If you are arriving by cruise ship, allow a large buffer after the ship’s first announced arrival. Do not assume that being scheduled to reach Kotor at 10:00 means you can safely book an 11:30 or noon boat. The boat leaves for the people who arrived on time.

If missing the tour would ruin your day, a cruise line excursion or a private arrangement may offer more protection. That usually costs more, but it can reduce the risk created by tender delays.

Who will enjoy this tour most?

I would recommend this outing to you if you want:

• A fast, active introduction to several coastal sights
• A chance to swim in clear water when conditions allow
• A speedboat ride with dramatic mountain and sea views
• A short visit to Our Lady of the Rocks
• A look at submarine tunnels and Mamula Fortress
• Good value instead of a private charter

You may want another option if you need a smooth ride, plenty of personal space, detailed guiding, or guaranteed cave swimming. People with back problems should think carefully about the bumpy open-water section.

Families can enjoy it, and several family groups had a very good time. Still, children should be comfortable with speed, spray, boarding a small boat, and changing plans if the cave is closed.

Should you book the Kotor Blue Cave tour?

Book it if you see the tour as a three-hour coastal adventure, not a guaranteed Blue Cave swim. The price is fair, the route covers several memorable places, and the submarine tunnel adds real character. The best days combine calm water, a manageable group, a careful captain, and enough room to enjoy the ride.

I would be cautious if you are visiting on a cruise ship with a tight schedule. I would also consider paying more for a private boat if comfort matters more than price.

My practical verdict: this is a good-value choice for flexible visitors who want scenery, swimming, and variety. Arrive early, bring water and sun protection, expect a bumpy ride, and accept that the Blue Cave may be brief or inaccessible. If those conditions sound reasonable, the tour can be a memorable way to see more of Kotor Bay in a short time.

FAQ

How long is the Kotor Blue Cave boat tour?

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

Where does the tour begin and end?

It begins at Hawaii Boat Tours Kotor, Park Slobode 1, Kotor 85330, Montenegro. It ends back at the same meeting point.

Is swimming inside the Blue Cave guaranteed?

No. Entry depends on weather, waves, water levels, safety conditions, and boat traffic. The captain may use a nearby swimming area instead.

How long do you spend at the Blue Cave?

The planned stop is about 30 minutes, but time inside the cave can be shorter if conditions are unsafe or several boats are waiting.

Does the tour visit Our Lady of the Rocks?

Yes. The stop at Our Lady of the Rocks is scheduled for about 20 minutes.

Is the submarine tunnel included?

Yes. The boat enters the former submarine tunnel, with about 10 minutes allocated for the stop and an explanation of its history.

Can you cancel for a full refund?

You can cancel at least 24 hours before the start time for a full refund. Changes or cancellations made less than 24 hours before departure are not accepted, unless the operator cancels because of poor weather or an insufficient minimum number of participants.