The first ones include a significantly higher speed of movement (from 15 to 70 knots), better maneuverability in the harbor due to the absence of a fin keel and the presence of two engines, incomparable comfort on board, and obvious external prestige of the owner.
The disadvantages include a huge gluttony in terms of fuel (about 100 liters of fuel per hour, which is 10-15 times more compared to a sailing yacht), significant wind drift (due to the absence of a keel), poor stability on the course, poor seaworthiness and durability in the open sea for specimens less than 24m. length, low fuel autonomy, a significant cost of acquisition, maintenance and repair.
Studying the management of a motor yacht, we teach all the same theory of ship construction, the rules of collision regulations, work with navigation systems and maps, as when cadets are sailing course. But practical exercises are fundamentally different, since we need completely different knowledge and skills to moor a huge yacht while sitting in a chair on the flybridge (upper bridge) and seeing from there much less details of what is happening than the captain would like. Also, the device of ship diesel engines and electronic systems serving them, the principle of operation and practical application of transom plates, driving with alternating switching on of the right and left engines are studied in detail.