The CEVNI test is required for navigating in the inland waterways of Europe such as the Dutch and French canals. It is a compulsory qualification which is easily gained following some self study and a simple multiple choice test. Since your're curious, it stands for: Code Européen des Voies de la Navigation Intérieure - you did ask! 
The test is very simple and usually takes a few minutes once you have spent some time learning the symbols and signs used on the European waterways. 
The RYA book "European Waterways Regulations" gives a thorough explanation of the rules and has the question bank included - essential reading to pass your test. Once digested simply call us to arrange a test for the nominal charge of £25 
You can buy the book by mail order from our online store here >