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How EPIRB's work
Tuesday, 06.30.2009, 08:10am
Emergency Positioning Indicating Radio Beacons or EPIRBs are compact, buoyant and portable emergency devices specifically
designed to transmit a radio distress signal to alert emergency authorities of a need for rescue. Once activated, an EPIRB will continuously transmit a specific radio signal to be detected by satellites.
What is Anti Heeling Control System (AHCS)?
Tuesday, 06.30.2009, 07:50am
The Anti Heeling Control system is used to detect the healing angle of the vessel and to rebalance the ship automatically by pumping ballast water from starboard to port or vice versa.

Propeller shaft optical alignment method
Tuesday, 06.30.2009, 07:36am
At the for'd end of the engine room a light box emitting light through a pin hole is fixed from the design height of the crankshaft.
Using the sighting gear in stern frame boss with solid piece fitted. The stern frame boss is marked off for boring. The solid piece is then exchanged for a sighting piece.
Essential information for shaft alignment calculation
Sunday, 12.14.2008, 05:43pm

Shaft alignment calculaton service may be provided subject to submission of necessary information.
Reliability of shaft alignment calculations depends on completeness and accuracy of propulsion shafting modeling. Shaft alignment designer should have complete information to model propulsion shafting properly.

How to apply the Compass Error and issue deviation card
Saturday, 12.06.2008, 09:53am
To understand how a marine magnetic compass is used it is necessary to understand the basic magnetic field of an ordinary magnet. The analogy of the sheet of iron filings used in the school physics lab is a good one. When a magnet is placed beneath the sheet of iron filings, they form themselves into a pattern illustrating the lines of magnetic force radiating from one pole to the other.
Practical Maritime Dictionary
Wednesday, 05.14.2008, 09:16pm

The choice of the terms and sewords listed is that they are in use on board commercial ships and should be part of the general knowledge of shipping office, deck or engine officers, among many others. Terms and abbreviations are permanently changing, errors are often found even in the most famous BA publications (ie: IBC Code). Therefore this list will be constantly updated, time and resources available, and the source(s) of the information will be mentioned when available. www.maritimeterms.com

The Two-stroke Engine
Tuesday, 03.18.2008, 03:59pm
In combustion engines the inner energy set free by combustion (e.g. of gasoline or diesel fuel) is changed partly into mechanical energy. Beside the four-stroke engine, the two-stroke engine is used (e.g. in lawn-mowers or in power saws). Every second stroke the engine is operating - there are no valves. It is necessary to use a mix of gasoline and oil (two-stroke oil) as fuel. This is used to lubricate the piston and the crank shaft.
The Cycle - The Four Strokes
Tuesday, 03.18.2008, 03:28pm
A 4-stroke cycle engine carried out four piston strokes during one combustion cycle - Intake Stroke, Compression Stroke, Power Stroke and Exhaust Stroke. During the intake stroke the intake valve is opened and the piston moves toward the crank shaft. The movement of the piston creates a negativ pressure in the combustion chamber. The air/fuel mixture is sucked into the chamber. If the Bottom Dead Center (BDC) is reached the intake valve is closed and the piston moves upwards (compression stroke). The air/fuel mixture is compressed.......
Piston Steam Engine
Monday, 03.17.2008, 04:35pm
Piston Steam Engine Denis Papin (1647-1712) constructed the first steam-power engine. James Watt (1736-1819) succeded in improving the steam engine to an effective, reliable and economic power source. In the boiler steam of high-pressure is generated in the fire tubes. It is led through the steam intake into the slide-box and by the slide into the zylinder at one side of the piston. There the steam is expanding and pushing against the piston. By the connecting rod the flywheel is turned half a rotation.....
4-Cylinder Four-stroke Engine Crankshaft rotation
Sunday, 03.16.2008, 04:27pm

4-Cylinder Four-stroke Engine
By means of a crank shaft the up and down motion is converted into a rotational motion. Within two rotations of the crank the engine is operating only during a semirotation. Several cylinders are used. They operate in turn, so that the engine runs evenly. In cars mostly are installed (or also 6-cylinder engines).......

Diesel - Engines
Sunday, 03.16.2008, 04:17pm

Diesel - Engine
The gasoline-engine (Otto-engine) wasn't very efficient, that is why 1892 Rudolf Diesel had developed the engine with great efficiency called after him.
It is like the Otto-engine a 4-stroke engine. The main differences are.....




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