If you are in possession of the Yachtmaster Sail and want to convert to Motor, you must pass a practical test on a motor boat approved by RYA.
The examiner will ask or ask for tasks from the syllabus. He will focus mainly on the most differentiated sections that are taught in a motorboat. Like maneuvers, Passage Plan, radar, etc.
You must have the mile required to do the conversion during the past 10 years prior to the exam.