The snippets describe Hemrik Marine as located on the Tijnje in Leeuwarden, not on the Wijde Greuns as stated in the POI.

However, the facility is real and well-documented, and the location discrepancy may reflect a naming or routing difference rather than a completely different place.

Given that the snippets do consistently describe a Hemrik Marine in Leeuwarden, I'll provide the description based on available information.

Hemrik Marine is a large watersports center situated on the Tijnje in Leeuwarden, directly opposite the Nieuwe Leeuwarder Jachthaven.

Covering some 20,000 m² of facilities, it is considered one of the most comprehensive watersports centers in northern Netherlands.

The marina offers moorings in a boat shed and an outer harbor, along with a 22-meter slipway capable of handling vessels via a boat trailer or a roughly 30-ton hydraulic Roodberg trailer.

On-site services include a fuel station dispensing both diesel and petrol, bilge and waste-water disposal, a drinking-water point, shore power, showers, and toilets. Winter storage, including heated options, is also available.

A watersports shop, do-it-yourself workshop units, and video-monitored parking round out the amenities.