Lake Constance (Untersee!!): Private & guided Boat Tour

The best part of this boat trip is its setting: Lake Constance’s Untersee feels quieter and more intimate than the larger eastern section. You get a polished Sea Ray bowrider, a 200 PS inboard motor, and a skipper who handles the boat while you enjoy coves, open water, sun, and swimming.

I like the private format, since two hours can be shaped around your group instead of a fixed sightseeing script. I also like the practical setup: fuel, bottled water, skipper, and pickup at Gaienhofen-Horn are included. The main drawback is simple: there is no toilet on board, and the boat is not suitable for pets, children under two, or people prone to seasickness.

Key points at a glance

• Quiet Untersee setting: Cruise the calmer western section of Lake Constance, with scenic shorelines, coves, and open water.
• Private boat for up to five: The small group size gives you room to set the pace and choose between cruising, swimming, sunbathing, and sightseeing.
• Sea Ray SPXE190: A stylish bowrider with a 200 PS MerCruiser inboard motor, a forward lounge area, and a large rear swim platform.
• Flexible host service: Nicole and the skipper can adjust plans and, when needed, shift the departure time to suit better weather.
• Useful inclusions: Fuel, bottled water, skipper, and pickup at Gaienhofen-Horn are part of the price.
• Plan for boat basics: Shoes and pets are not allowed, food is not included, and a harbor stop is needed if you require a toilet.

Why the Untersee makes a better boat setting

Lake Constance is a big body of water shared by Germany, Switzerland, and Austria, but its sections have different personalities. The Untersee, at the western end, is the quieter choice for a relaxed private outing. It has a more sheltered feel than the broad eastern lake, with attractive shorelines and places where you can pause for a swim or sunbathe.

That quieter setting matters. You are not simply being taken from one landmark to another. The point is the rhythm of being on the water: cruise for a while, slow down near a cove, swim from the stern platform, then settle into the bow lounge. If you want a packed sightseeing schedule, this may feel too loose. If you want two easy hours outside, it works well.

The boat departs from the harbor in Gaienhofen-Horn. Pickup at another German or Swiss harbor in the Untersee region is possible for an added charge. The operator asks you to contact them so you can meet at the end of the landing stage without confusion. That is a small but useful step, especially in a busy harbor.

What the two-hour route feels like

There is no rigid list of named stops, and that is part of the appeal. This is a private cruise built around your interests. You can request a sightseeing-focused outing, spend more time cruising, or make swimming and sunbathing the main event.

The opening part of the ride gives you time to settle in and take in the water from the boat. The Sea Ray SPXE190 is a bowrider, so the forward section has a lounge area where you can sit or stretch out in the sun. The stern has a broad swim platform, which makes getting into and out of the lake easier than climbing over the side.

A typical outing might move through several moods:

• Cruising: Enjoy the speed and movement of the 200 PS MerCruiser inboard motor while the skipper handles navigation and boat control.
• Sightseeing: Take in the Untersee shore and natural scenery from the water, with the skipper adjusting the ride to your interests.
• Sunbathing: Use the bow lounge as a comfortable place to relax while the boat is stopped or moving at a suitable pace.
• Swimming: Stop in a suitable spot and use the rear platform for water access.

The exact balance is up to you. That flexibility is valuable for mixed groups. One person may want a calm ride, another may want to swim, and someone else may prefer to lie in the sun. On a shared boat, those wishes can clash. Here, the small private group gives you more control.

Two hours is enough for a refreshing outing, but it is not a full-day lake expedition. You will need to choose your priorities. If swimming is important, say so at the start. If you mainly want views and a steady cruise, make that clear too.

The Sea Ray setup, from bow to swim platform

The Sea Ray SPXE190 is a compact, stylish boat designed for leisure rather than carrying a large crowd. With room for a maximum of five people, it offers a more personal experience than a large sightseeing vessel.

The forward lounge area is the place to stretch out, chat, and sunbathe. It gives the ride a relaxed feel, but remember that a bowrider is still an open boat. Bring sun protection and clothing suited to changing conditions. Shoes are not allowed on board, so wear footwear you can remove easily before boarding.

At the stern, the large platform is set up for water fun. It provides a practical spot for getting into the lake and climbing back aboard. Bottled water is included, but food is not, so plan ahead if you expect to be hungry. Alcoholic drinks can be arranged in advance, according to the available information, but they are not part of the standard price.

The 200 PS inboard motor gives the boat plenty of power for a short private cruise. The benefit is not only speed. A strong motor lets the skipper move between cruising and quiet stops without the boat feeling sluggish. Still, the experience is meant to be comfortable and unhurried, not a high-speed thrill ride.

How the private skipper service changes the experience

Your skipper takes care of operating the boat, so you do not need boating experience or a license. The service is described as attentive and individual, with German, English, and French available.

Nicole is identified as the host connected with the experience, and she has shown flexibility when weather affected the best departure time. That matters on a lake outing. A sunny, calm period can make the difference between a pleasant swim and a chilly, gray ride. If your schedule allows, keep some flexibility on the day.

The skipper also helps you make sensible use of the short duration. Two hours can disappear quickly if you spend too long deciding what to do. Tell the skipper early if you want a swim stop, a sightseeing cruise, or more time in a quiet cove. The private format makes requests possible, but you still need to communicate them.

The languages offered are German, English, and French. That is useful for international groups and makes the practical parts of the trip easier, especially meeting at the harbor and discussing the plan.

Price and value for a group of five

The cost is $363 per group of up to five people. At full capacity, that works out to $72.60 per person for two hours. For a couple, the per-person cost is much higher, but the price buys a private boat rather than individual seats on a shared cruise.

The value depends on what you want. If you only need a short ride across the lake, a shared boat may cost less. If you want to swim, sunbathe, choose your timing, and avoid a fixed group schedule, the private setup earns its price more easily.

Fuel is included, which removes one common surprise from a motorboat outing. A skipper and bottled water are also included, along with pickup from Gaienhofen-Horn. Pickup from another harbor in the Untersee region costs extra, so check that surcharge before booking if you are not starting in Gaienhofen-Horn.

For a family or group of friends who can fill all five places, this is the strongest value. The private boat, flexible plan, and fuel included make the per-person calculation reasonable for a special afternoon. For one or two people, book it because privacy matters, not because it is the cheapest way to see Lake Constance.

Swimming, weather, and the practical limits

The swimming option is one of the main reasons to choose this outing. The stern platform makes water access convenient, and the skipper can look for a suitable place to stop. Still, swimming is weather-dependent, and the lake can feel cool even on a warm day. Bring a towel and swimwear if you plan to get in, but keep expectations flexible.

The boat has no toilet. This is the most important practical limitation. Use facilities before boarding, and remember that a harbor stop can be arranged if needed. If anyone in your group requires frequent restroom access, the open-water format may not be comfortable.

People prone to seasickness are specifically advised against booking. Even calm water can cause trouble on a small motorboat, and the Untersee’s quieter character does not guarantee perfectly smooth conditions. If you know you are sensitive, consider how you normally handle boat rides before paying.

Children under two are not suitable for this activity. Pets are not allowed, and shoes must be removed. These rules help preserve the boat and keep the open deck safer, but they also limit who can join.

How to make the most of your two hours

I would treat this as a water-based break in your Lake Constance itinerary, not as a replacement for a full day of sightseeing. Arrive ready to board, with swimwear, a towel, sun protection, and any food you need. Do not count on buying lunch during the ride.

Before leaving the dock, agree on the basic plan. You might say that you want one swimming stop and the rest of the time spent cruising. Or you might prefer a slow sightseeing ride with no swimming. The skipper can tailor the outing, but the more clearly you explain your priorities, the better the two hours will fit your group.

Keep your schedule slightly open if possible. Nicole has adjusted timing when better weather offered a more pleasant opportunity, and that kind of flexibility is valuable for an outdoor activity. A fixed appointment may be less enjoyable than a modestly shifted one if wind or clouds change.

Contact the operator ahead of time to confirm the exact meeting point, especially if you are using a regional harbor rather than Gaienhofen-Horn. The standard pickup point is at the end of the landing stage in the harbor. Clear communication prevents a needless hunt around the waterfront.

Who should book this Lake Constance cruise

This trip suits couples, families with older children, and small friend groups who want private time on the water. It is especially good for people who value choice. You can cruise, swim, sunbathe, or combine all three without fitting into a stranger’s schedule.

It also works well for a special afternoon. The boat has a polished look, the group stays small, and the Untersee setting feels calm and scenic. The experience is more about comfort and shared time than formal guiding or a list of historic sights.

I would be less likely to recommend it to anyone seeking a long sightseeing program, a guaranteed swimming session, or a boat with a restroom. It is also a poor match for people with seasickness, families with children under two, and anyone who wants to bring a pet.

The perfect group is five people who can share the cost and agree on a relaxed plan. Fill the boat, bring what you need, and let the skipper handle the driving. That is when the private format offers its clearest value.

Should you book the Untersee boat tour?

Book it if you want a private, flexible two-hour escape on a quieter part of Lake Constance. The strongest reasons are the small group size, the Sea Ray’s comfortable bow and swim platform, the included fuel and skipper, and the ability to shape the outing around swimming or sightseeing.

Think twice if the lack of a toilet, no-pets rule, seasickness warning, or extra charge for another harbor creates a problem. For a group of five, the $363 price is easier to justify. For two people, it is a worthwhile splurge only if privacy and personal service matter more than finding the lowest-cost lake cruise.

FAQ

How long is the private boat tour?

The tour lasts two hours. Starting times depend on availability.

How many people can join the boat tour?

The private boat can carry up to five people.

Where does pickup take place?

Standard pickup is at the end of the landing stage in the harbor of Gaienhofen-Horn. Pickup from another German or Swiss harbor in the Untersee region is possible for an added charge.

Is a skipper included?

Yes. A skipper is included, so you do not operate the boat yourself. German, English, and French are available.

Is fuel included in the price?

Yes. Fuel is included in the tour price, along with bottled water.

Can I swim during the tour?

Yes. Swimming is one of the possible activities, along with cruising, sightseeing, and sunbathing. The boat has a large rear platform for access to the water.

Is there a toilet on board?

No. There is no toilet on the boat, although a stop in a harbor can be arranged if needed.