uk flag   dutch flag


uk flag   dutch flag

Marina Numansdorp in its current form exists since 2001 and has grown into a real family business. Waldi Wiedmer and Jeannet Klick have enjoyed running the marina for many years, together with a nice team of harbormasters. Son Kai has since taken over the running of the Marina.



For the last few years, Kai has been the main face of the harbor. He has been involved in both the Marina and the Shipyard from an early age and has a big passion for watersports! Saling, supping, rowing, it doesn’t matter!


By now, Kai isn’t just a familiar face in the harbor, but also in the rowing world. In the winter of  2020/2021, he participated in the Talisker Whiskey Atlantic Challenge, together with Mark Slats. A rowing trip of 5000 kilometers!


On the morning of 12 December 2020, Mark & Kai (team Row4Cancer) departed aboard the self-built rowing boat ‘Maria’, from the Canary Island of La Gomera. After a very intense trip with all imaginable weather conditions, regularly accompanied by whales, tuna, and swordfish, little sleep, an incredible tight routine, and a physical and mental challenge, they came ashore in the Caribbean on the Island of Antigua, after 32 days, 22 hours and 13 minutes.

Not only did they set a world record in the pairs segment with this time, but they also won the 2020/2021 race with a lead of more than 2 days over the number 2 (a four-man boat).

Met deze enorme prestatie hebben Kai en Mark € 78.000,- opgehaald voor de Maarten van der Weijden Foundation bestemd voor een onderzoek naar kinderkanker.

Inmiddels zijn Kai z’n handen weer helemaal geheeld en is hij 6 dagen per week in de haven te vinden.

With this enormous achievement, Kai and Mark have raised € 78,000 for the Maarten van der Weijden Foundation for cancer research for children. Kai’s hands have now completely healed and he can of course be found back in the harbor again, 6 days a week.


Would you like to read more about the Ocean Adventure? Check out these links:

What is the Talisker Whiskey Challenge:

An article from a Dutch newspaper:

On the news page of Mark Slats you can read all weekly update reports from the race: