Which Boat Tour Is the Gentlest: Pregnancy, Mobility, Seasickness and the Cave

1 September 2026 · 8 min read

The Blue Lagoon half day asks the least of you, the Three Island Tour is the steadiest boat we run, Krka takes the sea out of the question, and the Blue Cave is the one to think hard about. Here is what each day physically involves.

The Blue Lagoon half day asks the least of you, the Three Island Tour is the steadiest boat we run, the Krka day takes the sea out of the question altogether, and the Blue Cave is the one to think hard about. This page is for the guests who write to us before booking rather than after: pregnant, seventy-eight years old, prone to seasickness, carrying medication, or travelling with a child who finds a loud day difficult. We are not doctors, and nothing here is medical advice. What we can do is describe what each of our four days asks of a body.

The four days, ranked by what they ask of you

• Blue Lagoon half day, the shortest. Five hours, a small speedboat with up to 12 guests, short hops inside the sheltered archipelago, most of it anchored or ashore. Morning 09:00 to 14:00, afternoon 14:30 to 19:30.
• Three Island Tour, the steadiest. 7.5 hours on a large traditional wooden boat that sits heavily in the water and rarely leaves sight of land. Shaded lounge, open seating, a toilet on board. Leaves the Trogir Riva at 09:00, back by roughly 16:30.
• Krka Waterfalls, no sea at all. A land day by van, about an hour and a half each way, then a self-guided 2 to 3 hours in the park and a 30-minute river boat to Skradin. The trade is a day on your feet.
• Blue Cave tour, the demanding one. Eleven and a half hours from a 06:30 start on a fast boat, with one long open-water crossing to Biševo, about 36.6 nautical miles. Minimum age 8, and the tour page says it is not recommended for pregnant women, for anyone with back problems, or for severe motion sickness.

Blue Lagoon half day: least time, most sheltered water

If the worry is stamina, this is usually the answer. Five hours is short enough to be over before tiredness becomes a problem, and the route never leaves the sheltered water between Drvenik, Šolta and Čiovo. You are anchored in the Blue Lagoon for about an hour and 45 minutes, ashore in Maslinica for about an hour and 15, and in Branač Bay for about 45 minutes, which leaves only short runs under way. It is a speedboat, so you feel the sea more than on the wooden boat, and of the two departures the morning is calmer.

Three Island Tour: the boat that moves least

For anyone whose main concern is motion, a bad back, or simply needing somewhere to sit down properly, the Three Island Tour is the better boat even though it is the longer day. It is a large traditional wooden boat rather than a speedboat, it takes its 7.5 hours without rushing, and much of the day it is not moving at all: an hour anchored at the Blue Lagoon, an hour and a half ashore in Maslinica, an hour in Duga Bay. Shaded lounge deck, open sun deck, unassigned seating, a proper toilet on board all day, and lunch cooked aboard, served between Maslinica and Duga Bay, so a proper meal is part of the day rather than a hunt for a restaurant ashore. Against all that: it is the busiest boat, up to 84 guests. Boarding at Trogir at 09:00 rather than Okrug at 09:20 or Medena at 09:45 gives you first choice of seat.

Krka: no swell, but a walking day

The Krka Waterfalls trip is the one to pick if any sea motion at all is the problem. It is a land day: pickup from your accommodation across Trogir, Okrug, Seget, Arbanija and the two camps, about an hour and a half by road each way, then the park, then a 30-minute boat ride down the river to Skradin. Toilets are at the stops and inside the park rather than always to hand. The other side of it is real: 2 to 3 hours of walking on long wooden boardwalks, stone that gets slippery, and no guide setting a pace. Nobody hurries you, and nobody carries anything for you. Our Krka day trip guide covers what the park is like.

Blue Cave: the day to think hard about

The Blue Cave tour is the one where we would rather talk you out of it than sell it to you. Eleven and a half hours, a 06:30 start, a fast boat, and a long exposed crossing to Biševo. The tour page lists it as not recommended for children under 8, pregnant women, or people with back problems, and we mean that as written rather than as a disclaimer. The impact of a speedboat on open water is felt through the spine, and there is nowhere to get off halfway.

Pregnancy: what we can tell you, and what we cannot

We will not tell you whether to go on a boat while pregnant. That is a question for your own doctor or midwife, who knows your pregnancy and your history, and we know neither. What we can give you is the description to take to that conversation, because "a boat trip in Croatia" is far too vague a thing to advise on. Here is what the day involves:

• Boarding. A step from the dock, or from the swim platform at the back, with the crew there to steady you. No ramp and no lift on any of our boats.
• Time aboard. Five hours on the Blue Lagoon half day, 7.5 on the Three Island Tour, eleven and a half on the Blue Cave day. Krka is by van with a 30-minute river boat at the end.
• Sea state and distance from shore. The Three Island Tour and the Blue Lagoon half day stay inside the archipelago and rarely leave sight of land. The Blue Cave day crosses 36.6 nautical miles of open sea at speed.
• Toilets. Every boat has a marine toilet in a small onboard cabin, available all day rather than only at a stop, though it is not a full bathroom.
• Shade and seating. Every boat has a shaded area and open, unassigned seating, and the wooden boat has the most room by far.
• Getting back early is not an option. Once the boat leaves, the itinerary is the itinerary. A private charter is the only version where the timing is yours.

Take that to your doctor, then tell us what they said and we will tell you which of the four fits, or that none of them do. One fixed point from our side: the Blue Cave tour page lists it as not recommended during pregnancy, and we will say so rather than book around it.

Older guests, bad backs and limited mobility

Guests in their seventies and eighties join our tours regularly, and once aboard the day is not physically demanding: seating, shade, a toilet, and nobody obliged to swim. The part to plan around is boarding, a step from the dock or the swim platform with a hand from the crew to steady you. They cannot carry anyone, there is no ramp or lift, and a wheelchair cannot practically come aboard. It is written up properly in accessibility on a boat tour, including where we would say no. For a bad back: the wooden boat moves least, the Blue Lagoon half day is shortest, Krka is a walking day rather than a sitting one, and the Blue Cave is not recommended at all.

Seasickness: the useful version

Most guests are fine: the Adriatic here is usually calm in the morning, and the Blue Cave is the one to think about. Our full seasickness guide gives the tour-by-tour version, and the practical part is worth repeating, as guests who are prone to it report it: a remedy taken before departure works, one taken once the feeling starts usually does not. Sitting low and towards the middle of the boat helps, so does staying outside in the air, watching the horizon rather than a phone, and eating something light beforehand. What to take, and whether to take anything, is a question for a pharmacist. Two things to add. Book a morning departure if you can, because the maestral sea breeze builds through the afternoon. And tell the crew at boarding rather than an hour in: a steadier seat early is worth more than a remedy taken late.

Medication, and keeping it cool

We cannot promise cold storage on board. What the boats do have is shade, a cabin on the larger ones and a toilet; there are no charging ports either, so anything that needs power is your own arrangement. If your medication has to stay cold, tell us before you book and ask the crew on the day what is possible on that boat, rather than assuming. If it has a temperature limit you are unsure about, ask us before you book rather than guess. The rest is in what to expect on board.

Inside the Blue Cave, if enclosed spaces are difficult

Worth knowing before you book. You do not enter the cave on our boat. You transfer into a small local boat, which goes in through a low opening, and inside it is a dark cavern lit only by the blue glow coming up through the water. A short visit and a famous one, but it is a small boat, a low ceiling, other boats around you, and no quick way back out. If enclosed spaces are genuinely difficult for someone in your group, staying with the boat outside while the others go in is perfectly reasonable. Entry is never guaranteed in any case: it depends on the sea, the tide and the local authorities, and the ticket is bought on site. Children under 5 are not permitted inside at all, a rule of the site rather than ours.

Children who find a busy day hard

No promises here, only what each day is like, because you know your child and we do not. The Three Island Tour is the loudest but the roomiest: up to 84 guests, open seating, a shaded lounge to retreat into, and enough swim stops that a difficult hour does not sink the day. The Blue Lagoon half day is quieter in group terms, up to 12 people, but the space is smaller, over five hours rather than seven and a half. Krka has no guide and no fixed pace, though the park is busy in summer. One practical note: the crew fits child-sized life jackets before departure, so if the feel of one is likely to be a problem, say so when you book. Our guide to boat tours with kids covers the rest.

Tell us when you book, not on the dock

Any medical condition, reduced mobility, pregnancy, medication or other circumstance that might affect the day belongs in the booking, not in a conversation at the boarding step with the rest of the boat waiting. Told early, it lets us give you a useful answer about whether a specific tour works, and lets the crew plan around it quietly. Told at the dock, the options shrink to whatever can be arranged in two minutes. Write to us and describe the situation. We will tell you which of the four fits, or that a private charter is the better shape of day, or that none of it is right this time. Deposits, cancellation and the season are on our FAQ page.

Frequently asked questions

Related tours

• Three Island Tour, from €50
• Blue Lagoon Half Day, from €55
• Krka Waterfalls, from €75

Related guides

• Kamerlengo Castle in Trogir: tickets, hours and what to see
• Maslinica on Šolta: The Stop People Remember
• Private Charter from Trogir: Your Own Route, Birthdays and Proposals

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