Blue Cave from Kotor: Which Boat Trip Includes the Submarine Tunnels and Our Lady of the Rocks?
Updated October 11, 2026 · 5 min read
The short answer: choose the Blue Cave, Submarine Base and Our Lady of the Rocks trip for the clearest all-round route. It lasts 3 hours, starts at €38.49 and has 5,104 reviews. Choose the Blue Cave swim and submarine tunnels trip if the advertised 30-minute swim matters more; it lasts 3–3.5 hours and starts at €35.74.
The two leading trips compared
| Boat trip | Duration | From | Reviews | Best for |
|---|---|---|---|---|
| Blue Cave, Submarine Base and Our Lady of the Rocks | 3 hours | €38.49 | 5,104 | The balanced first visit |
| Blue Cave Swim, Our Lady of the Rocks and Submarine Tunnels | 3–3.5 hours | €35.74 | 4,922 | A clearly stated swim stop |
The first is described as a speedboat trip, and both combine the cave with history in the bay. Both name Our Lady of the Rocks and a submarine site; the second calls it a Yugoslav submarine tunnel. The second also names Mamula fortress and explicitly promises 30 minutes for swimming in the cave. The first describes a hidden submarine base but does not publish an equally precise swim duration in the summary.
What the Blue Cave part really means
The Blue Cave lies on the Luštica Peninsula at the entrance to the bay. It is accessible only by boat. Its colour comes from sunlight refracting into the cave, so the visual effect depends on daylight and sea conditions. A listing can include the cave without guaranteeing that every departure will enter or allow swimming; ask the operator what happens when conditions are unsuitable.
This is also why a speedboat trip feels different from a leisurely bay cruise. It covers the long route quickly, but the ride can be bouncy and there is less space to move around. Travellers who dislike a fast, exposed ride should consider a full-day cruise in the Bay of Kotor instead.
Are the submarine tunnels worth including?
Yes, if you want the route to be more than a cave-and-swim outing. The tunnels are remnants of the Yugoslav naval period and add a short, unusual historical stop. They are not a museum visit: expect to see the structure from the boat, not a long interpreted exhibition. Our Lady of the Rocks provides the contrasting cultural stop, while Perast is normally seen from the water or on a brief visit depending on the exact departure.
Which trip should you book?
Book the 3-hour Blue Cave, Submarine Base and Our Lady of the Rocks trip for the strongest review record and the simplest first-time itinerary. Pick the slightly longer Blue Cave Swim trip if the stated 30-minute swim and the pass by Mamula are decisive. Before paying, check the meeting point, cancellation terms and the operator’s weather procedure on the booking page; those details can differ even when the route names look almost identical.
Our recommendation
For most visitors, we recommend the Blue Cave, Submarine Base and Our Lady of the Rocks trip. It covers the three places named in the question in a compact 3-hour trip and has the most substantial review record of Kotor’s Blue Cave options.
