Kadaster keeps the Dutch public registry of ships. It says registering a ship establishes its ownership, that registration is compulsory to establish a mortgage, and that a registered boat gets a stamp with a unique identification number. For a zeebrief, a Kadaster inspector measures the boat for its tonnage certificate.
What a surveyor checks
The Kadaster stamp and number on the boat against the registry details, and whether a mortgage is recorded. Kadaster records ownership; it says nothing about condition.
In the report
"Registration: entered with Kadaster, identification stamp seen on the main bulkhead and matching the registry extract provided. Buyer to confirm no mortgage is recorded before completion."