What is a lull slider?

The term "calm pusher" is almost self-explanatory: It is a boat engine that is mainly used in sailing yachts to push and drive (also) in calm conditions. From practice you know that the outboard motor is also used on many other occasions, e.g. when maneuvering in the harbor, to accelerate the ride in light wind, to turn into the wind for reefing in the event of a strong breeze or to "escape" from a storm. The driving force of the engine depends on the size, weight, the area of use of the boat – and the desired power reserves for handling in all conditions on the water.