skippropeller

A skippropeller is a type of marine propulsion system. It is characterized by a propeller that is partially submerged and designed to operate at the surface of the water. The key feature is its ability to "skip" or break through the water surface rather than remaining fully submerged like a conventional propeller. This is typically achieved through a specific propeller design, often with a wide diameter and relatively shallow pitch, and by mounting the propeller shaft at an angle that allows for this surface operation.

The skippropeller is often used in applications where shallow water operation is critical, such as on shallow-draft boats, airboats, or specialized vessels designed for marshy or very shallow waterways. Its ability to operate at or near the surface reduces the risk of the propeller striking the seabed or submerged obstacles. This design can also offer advantages in terms of efficiency in certain conditions by reducing the overall wetted surface area compared to a fully submerged propeller.

However, the performance of a skippropeller can be affected by wave conditions and the amount of submergence. In rough seas, the propeller may become too deeply submerged, leading to reduced efficiency or even cavitation. Conversely, if it is too far out of the water, it can lose thrust. Therefore, operating a vessel equipped with a skippropeller often requires careful management of speed and trim to maintain optimal propeller performance. They are less common than conventional submerged propellers and are typically found on specialized craft for specific operational environments.