The processing, safety and control systems, utility and auxiliary equipment, for producing hydrocarbon liquid and...
A pipe used in wells to conduct fluid from the producing formation into the Christmas tree. Unlike the casing...
A side elevation of a ship form.
The gradual collapse of the hull girder, involving the spread of elasto-plastic buckling throughout a transverse...
This is the sum of the area bounded by the outline of the blades when projected onto a plane perpendicular to the...
Permanent repair completed at the time of the survey to the satisfaction of the surveyor, therein removing the...
An integrated mechanical propulsion system developed by Wärtsilä as a single supplier with commitment to lifetime...
see POWER-SAVING DEVICES.
The distance from the propeller to the hull has a linear influence on the pressure impulses. A reduction of this...
The largest possible propeller diameter is preferred in order to obtain the highest possible propulsive efficiency.
The propeller is a potential source of noise and vibrations in a ship. The vibration of a propeller are strongly...
The hub is bolted to the flanged end of the tailshaft. Without ice class, the hub diameter/propeller diameter ratio...
A circular casing enclosing the propeller. The propeller operates with a small gap between blade tips and the nozzle...
The distance that a propeller theoretically (i.e. without slip) advances during one revolution.
It is the distance at the blade tip between the generating line and the line perpendicular to the propeller axis...
For connecting the propeller shaft with the intermediate shaft, a hydraulic coupling flange is used.
The aftermost section of the propulsion shafting in the stern tube in single screw ships and in the struts of multiple...
Skew angle of a propeller is the angle measured from ray “A” passing through the tip of the blade at mid-chord...
A propeller surface finish has big effect on fuel consumption. A surface finish of 70 microRa will add over 4.5...
A revolving screw-like device that drives the ship. The screwtype propeller consists of a hub and blades, all spaced...