PROPELLERS AND POSITIONING, a type of COMPONENTS AND SYSTEMS FOR VESSELS.
Propellers and Positioning are a type of Components and Systems for Vessels. In this subcategory, position is used synonymously with manoeuvring, and functional market segmentation helps to address the exact needs of the procurement context. Applications span a wide spectrum, including inland, river and coastal shipping, ferries, yachts, harbour and sea?going tugs, ocean?going vessels, offshore systems and military vessels. Tunnel thrusters are built into the bow below the waterline; most are driven by electric motors, although some use hydraulic power. Azimuth thrusters include fixed?pitch propellers and controllable?pitch propellers, and no distinction is made between mechanical transmissionsL?drive and Z?driveand Azipod electrical L?drive transmissions. Azimuth propellers are likewise not differentiated by transmission type. The cycloidal drive propeller, also known as the Voith Schneider propeller, and waterjetswhich produce thrust by expelling water rearwardare also part of this subcategory. Market trends indicate that offshore propulsion and positioning are moving toward integrated package solutions offered by large players, combining propulsion with engines and electric motors; there is a general shift from in?line propulsion to azimuth solutions, with positioning for offshore vessels increasingly converging and leveraging thrusters; and there is a growing trend toward retractable thrusters, particularly for pipe? and cable?laying applications.