Steering gear application in ships We are all familiar with the use of a rudder, which helps in turning a ship as and when required. Rudders are the principal system for the entire motion and control of the ships. But we mustn’t forget that the entire rudder action is dependent on another pivotal system called the […]
Problems found in steering gear system of ships A vessel, under pilotage, departed a port in ballast and was down bound in a restricted waterway. The engine control was set to bridge control and a helmsman was using manual full follow-up (FFU) steering. At one point a port alteration was requested; however, the rudder angle indicator […]
Repair of bronze rudders and propellers by resurfacing for ship The repair of bronze rudders and propellers normally requires the boat to be pulled up onto a slipway, lifted out of the water to the quayside or dry-docked. The resurfacing and machining of the rudder can be carried out by an experienced DIY person. However […]
Bronze rudder and propeller resurfacing techniques Most boat rudders and propellers are cast from good quality alloys in an attempt to reduce corrosion and other wear from immersion and operation in seawater. Depending on the design and requirements of the boat, a boat’s rudder can be fitted outboard, being hung aft, or inboard hung under […]
Wartsila Steerable Thrusters The Wärtsilä Steerable Thruster (WST) has been developed in parallel with the latest operating demands for tugs, river-going vessels, and various offshore support vessels. The aim, as with all Wärtsilä products and solutions, is to ensure optimal efficiency, high hydrodynamic performance, less maintenance and better accessibility for serviceability. With eight thruster types, […]
Wartsila Midsize Waterjets A compactly designed axial pump with excellent efficiency, cavitation and noise characteristics. The waterjet unit is completely pre-assembled, thereby reducing installation time. High performance components in stainless steel to prevent wear and corrosion. The water lubricated bearing in the stator bowl provides an environmentally friendly solution. Water lubricated Face type sterntube seal […]
Wartsila Retractable Thrusters Wartsila retractable thrusters are used with dynamic positioning (DP) systems or provide additional thrust capacity for station keeping. Depending on project requirements, they can also be used for main or emergency propulsion. They are available in power ranges from 850 to 6500kW in both L-drive and Z-drive options, and which can be […]
Wartsila Modular Waterjets The Wärtsilä WXJ modular waterjets represent the state-of-the-art in this field, delivering outstanding benefits and performance and offering a high-level of customisation with a wide variety of options available depending on the vessel type. The Wärtsilä WXJ series of modular waterjets features an improved axial pump design, which boosts performance with an […]
Wartsila transverse thrusters The combination of high thrust values with compact dimensions provides additional thrust for a wide range of vessels types. In auxiliary applications, transverse thrusters support the mooring or harbour operations of merchant cargo vessels. When applied in Dynamic Positioning systems, transverse thrusters extend the DP capability of, for example, offshore supply vessels. […]
Wartsila Propulsion Control System The Wartsila Propulsion Control System (PCS) is a comprehensive system of control devices, displays, indicators and modules designed to suit all possible propulsion configurations of a modern ship. The human interface of Wartsila PCS, ProTouch, is a complete system of levers and touch screen interfaces, that responds to market demands for […]