A small-crew boat day can feel like getting away. This one combines Dokos island (with hiking and shipwreck snorkeling) and Hydra town with a skippered setup, plus included sea scooters, snacks, and drinks. My favorite parts are the chance to choose what you do at each stop, and the way the boat day stays relaxed instead of feeling like a timed group tour; the only real catch to budget for is the €850 fuel surcharge per booking, which can change the total price.

You’ll sail from Agios Kosmas Marina and spend about nine hours on the water (the day includes travel time). This is a private experience for just your group, so you’re not stuck in a line of strangers when you want an extra swim minute or you feel like lingering in Hydra.

One more practical thought: the trip depends on good weather, so plan for the possibility of a different date if conditions aren’t right. If you want a perfectly fixed schedule no matter what, boats at sea can be less predictable than land-based plans.

Key things to know before you go

• Dokos hike options: abandoned farmhouses, a castle, and a lighthouse dating to 1923
• Snorkeling near Dokos: a shipwreck is reportedly close to the island’s seafloor
• Hydra town at your pace: around two hours to stroll and grab lunch by the sea
• Kelevini (Skylli and Spathi) anchoring: clear water, greenery, and an easy unwind segment
• Sea scooters included: use them where the boat anchors, not just as decoration
• Captain-led comfort: reviews highlight a smooth ride and a friendly, safety-focused skipper

Why a private Hydra and Dokos boat day beats a big cruise

If you’re picturing Hydra as a day-trip crowd show, this route fights that. You’re taking a private, skippered boat, so your time on the water doesn’t come with the usual cattle-herding feel. You can shift gears between swim time, snorkeling time, and just soaking up the views without negotiating schedules with dozens of people.

I also like the level of control built into the day. At each stop, you can pick what matters most—swimming, snorkeling, a hike, eating out, or simply chilling. That flexibility is the real value here, because it lets the day fit your energy level instead of forcing everyone into one template.

And yes, the boat setup helps: included sea scooters and snorkeling equipment mean you can use the water time the way you want, rather than hunting gear or paying extra on the spot. Reviews consistently mention a clean, comfortable boat and a captain who keeps things safe and calm.

The big-money math: price, what’s included, and the fuel surcharge

The listed price is $1,775.21 per group for up to 11 people, so the “per person” number depends heavily on group size. If you fill it close to 11, it can work out fairly reasonable for a full day with a private skipper and boat time. If you’re traveling as only a few people, the cost per person rises quickly—so it helps if you’re booking with friends or family.

What’s included is substantial and worth counting. You get sea scooters, snorkeling equipment, snacks, bottled water, alcoholic beverages, and WiFi onboard. There’s also a skipper and private transportation, so you’re not assembling multiple parts of the day yourself.

The part you must budget for is the fuel surcharge of €850 per booking, which is not included in the advertised price. That means your real total is closer to: group price + €850. If you’re cost-comparing with other options, include that fuel surcharge in your mental math.

Leaving Athens: the Agios Kosmas Marina start and the flexible timing window

The meeting point is Agios Kosmas Marina (Leof. Poseidonos 18, Elliniko 167 77). The tour starts at 10:30 am, and it ends back at the same meeting point. The duration is about nine hours, and that duration includes travel time—so you’re not just counting time at each island.

Timing has a twist that’s useful if you like options: the trip can start whenever the customer wants, but it has to be finished by 7:00 pm. In practice, that means you should plan for a late-morning departure unless you coordinate an earlier or later start within the window they provide.

Also, the start area is noted as near public transportation, which matters if you’re trying to reduce the number of taxi legs in your day. The experience uses a mobile ticket, so you can keep things simple.

Stop 1: Dokos for hiking, a lighthouse built in 1923, and shipwreck snorkeling

Dokos is tiny—about 18 permanent inhabitants—and it sits in the Saronic Gulf between Hydra, Spetses, and the coastal area of Ermioni. That small scale is the whole point: you get nature without the scene.

You’ll spend about two hours there. The morning setup is ideal for an easy start—calm swimming is the vibe—then the island can shift into an active mode if you want it.

If you like walking, Dokos is set up for that. You can hike and, along the way, you’ll encounter abandoned farmhouses, a castle, and the well-known lighthouse from 1923. Even if you don’t do the full hike, you’ll likely enjoy the feeling of moving through a place that feels outside modern tourist patterns.

For snorkeling fans, this is one of the most interesting stops on the route. Near Dokos, the sea bottom is described as holding an ancient shipwreck you can explore. You’ll have snorkeling equipment included, so you can get in the water without extra rentals.

A note to keep expectations grounded: snorkel experiences depend on water conditions. But with sea scooters and included gear, you’ll have multiple ways to enjoy the water once you’re there.

Stop 2: Hydra town for lunch by the sea and a slow, walkable reset

Hydra town is the recognizable contrast to Dokos. The boat docks in Hydra, the heart of the Saronic Gulf, where naval tradition and a cosmopolitan island feel shape the mood.

You get around two hours in Hydra town. That’s enough time to do a relaxed walk, check out historical points of interest, and—most importantly—eat without rushing. The plan here is simple: pick a restaurant by the sea, have a real lunch, then wander afterward at your own pace.

Hydra is known for elegant mansions and historic sites, so you’ll want comfy shoes and a bit of curiosity. If your group includes different tastes, this stop also helps. One person might want to linger near the water with a drink; another might prefer strolling to spot points of interest.

The day can feel especially smooth when the lunch part is organized well. In earlier experiences, the route’s organizer was praised for getting the Hydra lunch timing right, which matters in a short two-hour window.

Stop 3: Kelevini islands (Skylli and Spathi) for crystal-clear water and scooter time

After Hydra, you’ll anchor at the Kelevini islands, also referred to as Tselevinia—specifically Skylli and Spathi. This part of the route is about water quality and downtime.

You’ll have about 1 hour 40 minutes there. The islands are described as having crystal-clear waters and lush greenery, and the tone is calm. This is where the sea scooters shine, because you’re anchored and you can move around without racing against ferry schedules.

This stop also works well for anyone who wants a straightforward afternoon: swim, snorkel if conditions look good, then relax with a drink. The plan explicitly includes the option to unwind, and with the included snacks and drinks on board earlier, you’ll likely treat this like the leisure segment of the day.

On-board comfort: sea scooters, snorkeling gear, WiFi, snacks, and drinks

This is not a barebones boat day. You’re provided with sea scooters and snorkeling equipment, plus bottled water and snacks. If you want a day that feels complete without stopping for supplies, this checks that box.

Alcoholic beverages are included too. That can be a great fit for the social side of a private day, especially if you’re booking for friends or multi-generational groups who want the day to feel like a treat rather than a workout.

WiFi onboard is included, which sounds minor until you need it for a map check or sharing photos quickly. In a private setting, those small comforts reduce stress.

What really comes through in feedback is crew tone. Captains are praised for both skill and friendliness, and the ride is described as smooth and safe. Names mentioned include Captain Apollo (Apollonas), and the logistics were also credited to Vasilis, so you’ll likely feel looked after from the first minutes.

What the 9-hour day feels like in real life

You’re out for about nine hours, but it doesn’t feel like nine hours of “sit and wait.” The structure is built around short, satisfying blocks: Dokos first (nature + hike + possible shipwreck snorkeling), Hydra second (walk and lunch), then the Kelevini islands (anchoring + water time).

Because it’s private, the day doesn’t have to match a rigid group-cruise tempo. If your group is snorkeling-heavy, you can use the time to extend water activities. If your group wants more walking, Dokos gives that option too.

The one thing to watch is energy pacing. Two hours in Dokos might be short if you aim to hike and snorkel in the same window. If you’re the split-decision type, tell the skipper your group’s priority early so you don’t burn time figuring it out mid-stop.

Who should book this boat day trip

This trip is a strong fit for people who want:

• Privacy with only their group onboard
• A mix of island town time (Hydra) and nature time (Dokos and the Kelevini islands)
• Included water activities like sea scooters and snorkeling gear
• A skippered day where someone else handles the boat planning

Most people can participate, and service animals are allowed. Still, because this is a boat day with swimming options, it’s best for anyone comfortable with water-based activities and basic outdoor walking.

If your group prefers a highly fixed itinerary with no flexibility at all, a private boat day can feel too adjustable. If you love control and want the day to match your pace, you’ll likely find that the setup works.

Should you book it?

Book this if your ideal Athens day includes a mix of Hydra’s town atmosphere and Dokos’s quieter island feel, plus real time in the water with sea scooters and snorkeling gear. It’s also a smart choice if you’re booking with a group near the maximum size, because the private pricing becomes easier to justify.

Hold off or rethink it if the fuel surcharge is a deal-breaker in your budget, or if your dates don’t offer much flexibility for weather changes. The experience requires good weather, and boat days can change on you when conditions don’t cooperate.

If you’re planning your Saronic Gulf time, this one is a good match for people who want authenticity without the mass-cruise crowd.

FAQ

What’s the duration of the Hydra and Dokos private boat day trip?

It’s about 9 hours, and that includes travel time.

What time does the tour start?

The start time is listed as 10:30 am, and the trip can start whenever the customer wants as long as it is finished by 7:00 pm.

How big is the group?

It’s private, and pricing is per group up to 11 people.

Where do we meet, and where does the trip end?

You meet at Agios Kosmas Marina (Leof. Poseidonos 18, Elliniko 167 77, Greece) and the trip ends back at the same meeting point.

What’s included in the price?

Sea scooters, snorkeling equipment, alcoholic beverages, bottled water, snacks, WiFi onboard, a skipper, and private transportation are included.

What’s not included?

Fuel is not included, with a fuel surcharge of €850.00 per booking.

Are tickets included for the stops?

Admission tickets are listed as free, and the stop times are included as part of the itinerary.

What happens if weather is poor?

This experience requires good weather. If it’s canceled due to poor weather, you’ll be offered a different date or a full refund.

Is free cancellation available?

Yes. You can cancel up to 24 hours in advance for a full refund. If you cancel less than 24 hours before the start time, the amount you paid is not refunded.