Maritime emergencySeveral people injured following a catamaran collision on Lake Constance

Leonie Meyer

 · 17.08.2026

On Friday morning, the catamaran “Constanze” crashed into the quay wall in the port of Konstanz.
Photo: picture alliance/dpa
| Silas Stein
​Collision on Lake Constance: On Friday morning (14 August), the catamaran ‘Constanze’ crashed into the quay wall as it entered the port of Constance. Twelve people were injured in the accident. It remains unclear what caused the accident.

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In the port of Konstanz, the catamaran “Constanze” collided with a wall at 8.50 am on Friday morning. According to the Bodensee Catamaran Shipping Company, there were 14 passengers on board. The vessel is normally authorised to carry up to 182 people. Twelve people sustained injuries in the collision, including passengers and the two skippers. Several of them were taken to nearby hospitals for further treatment. According to the shipping company, no one’s life was in danger. Sebastian Dix, press spokesperson for the Lake Constance Catamaran Shipping Company, confirmed this on Monday in response to a follow-up enquiry from YACHT: “To the best of our knowledge, most of the injured have now been discharged from hospital.”

Immediately after the collision, the passenger ship was evacuated. The fire brigade, the police and the German Life-Saving Association (DLRG) arrived in large numbers. A rescue helicopter was also called in.

The last time this happened was ten years ago, Collision between a sailing boat and the catamaran on Lake Constance. The skipper was sentenced to six months’ a penalty notice following the collision proposed.

Low water levels hampered the rescue operation on Lake Constance

The low water levels in Lake Constance This posed a challenge for the emergency services. Some of the DLRG boats were unable to get close enough to the stricken catamaran due to their draught. The fire service boats, which have a shallower draught, therefore took charge of the injured and brought them ashore.

Following initial inspections on Friday, there was no risk to the waterways. Neither oil nor any other operating fluids had leaked, nor had water entered the catamaran. Both hulls were dented by the force of the impact. “We estimate the damage to property to be between 500,000 and one million euros,” says Sebastian Dix. “The catamaran ‘Constanze’ was towed free with the help of several vessels and is now moored in the port of Konstanz.” It has been impounded there pending police investigations.

Investigation into the collision

It was initially unclear why the catamaran crashed into the wall at the harbour entrance. To establish the cause of the accident, the vessel’s recorded voyage data, amongst other things, is to be analysed. In addition, investigators are using drone footage and divers have searched the scene of the accident. The question of whether the low water level played a part is also being investigated.

As Sebastian Dix told YACHT on Monday afternoon, there are as yet no new findings regarding the circumstances of the accident. “There was no indication of technical faults with the catamaran, nor any indication of health problems affecting the skipper or helmsman. Both have successfully passed their annual medical examinations and are officially qualified to operate the catamaran,” explained the press officer. The public prosecutor’s office and the police are continuing their investigations. YACHT will update this article as new information becomes available.

Ferry service on Lake Constance every two hours

The accident disrupted the ferry service between Konstanz and Friedrichshafen. Normally, the catamarans run hourly across Lake Constance during the summer. “The service is currently running every two hours with the catamaran ‘Ferdinand’. Following the accident, only one vessel was initially available for regular service, as the catamaran ‘Fridolin’ is undergoing maintenance. “However, we will try to speed up the work here and hope to have the ‘Fridolin’ back in service by the end of this week at the latest, so that we can resume hourly services,” says Sebastian Dix.

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Leonie Meyer

Leonie Meyer

Editor News & Panorama

Leonie Meyer was born in Detmold in 1997. The passion for boating runs in her family: every year they spend their summer holidays in Croatia with their boat. Even as a child, she leafed through her father's BOOTE magazine.

After training as a design assistant at school, she moved to Magdeburg to study International Journalism. During this time, she completed an internship abroad at a German daily newspaper in Greece and an internship at BOOTE magazine. After graduating with a BA (2020), Leonie did a graduate internship in Mallorca. Her last stop was a cross-media traineeship at a daily newspaper in OWL. Leonie Meyer has been working as an editor in the watersports digital editorial team since 2023 and turned her passion into a career.

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