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sriram Featured Blogger
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Air Starting Line Explosion & Safeties Featured
How Can Air Line Explode? For a fire to happen, it has to complete the three sides of the fire triangle namely-Heat, Fuel & Air. In an air starting system of main engine, fuel may be present in the form of lube oil carried over from the air compressor. Moreover, oxygen is present in the system in abundance. The heat source m ...Oct 14 -
Life Boat Launching Procedure and Fall arrestor system Featured
Procedure for the Launching of Lifeboats Drills are to be carried out at the Master’s discretion, in line with Solas requirements, and addition safety precautions may be implemented. If routinetesting cannot be conducted, the issue must be reported to the Superintendent. Required work permits, risk assessments, and Tool-Box Talks are to be compl ...Oct 10 -
Boiler Safety Valve setting - Ever lasting doubts cleared Featured
Boiler safety valve is set to lift at any pressure, but not more than 3% above working pressure. Also the safety Valve re-sits at 5% below working pressure. There are 2 safety valves. Both the safety valves are to be set at a pressure not exceeding 3% of the normal working pressure (stamped on name plate). Let us say the working pressure of the ...Oct 05 -
LNG Reliquefaction System Featured
Want to know about the basics of LNG Reliquefaction system? Read here to know about the reliq system in simple terms ...Oct 05 -
VOLTAGE DIVIDERS
VOLTAGE DIVIDERS Voltage dividers for d.c., a.c. or impulse voltages consist of resistors or capacitors or convenient combinations of these elements. Inductors are in general not used for voltage dividers for testing purposes, although 'inductance voltage dividers' do exist and are used for the measurement of power frequency voltages,(139) indepen ...Dec 17 -
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DieselShip
DieselShip has not set their biography yet
Recent Posts
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How to join Merchant Navy
10th class
Is your current Qualification 10std Passed? Is 10std Aggregate 40% or more? Is your english mark 40% or More? Is your present age 17.5 - 25 years? If you answered No to any Questions; As per DGS Circular 07 of 2005. You do not qualify for Joining Merchant Navy. Try selecting again with some lower Qualificat ...
Feb 01
Ship Auxiliary Machineries
Ship Auxiliary Machineries
Machinery, other than the main propulsion unit, is usually called 'auxiliary' even though without some auxiliaries the main machinery would not operate for long. The items considered are air compressors, heat exchangers, distillation equipment, oil/water separators, sewage treatment plants and incinerators.
Air comp ...
Sep 13
Watchkeeping and equipment Operation
Watchkeeping and equipment Operation
The 'Round the clock' operation of a ship at sea requires a rota system of attendance in the machinery space. This has developed into a system of watchkeeping that has endured until recently. The arrival of 'Unattended Machinery Spaces' (UMS) has begun to erode this traditional practice of watchkeeping. The org ...
Aug 20
Mechanics of Engineering Materials
Mechanics of Engineering Materials
A knowledge of the properties of a material is essential to every engineer. This enables suitable material choice for a particular application, appropriate design of the components or parts, and their protection, where necessary, from corrosion or damage.
Material properties
The behaviour of a metal under va ...
Aug 20
Fire fighting and safety
Fire fighting and safety
Fire is a constant hazard at sea. It results in more total losses of ships than any other form of casualty. Almost all ire’s are the result of negligence or carelessness. Combustion occurs when the gases or vapours given off by a substance are ignited: it is the gas given off that burns, not the substance. The temperatu ...
Aug 20
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Recent Posts
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MEO Class 1 Exam Preparatory kit
Dieselship.com offers a MEO Class 1 Exam Preparatory kit. This kit consists of the following books. 1.CLASS 1 ORAL EXAM GUIDE. This book offers most versatile and comprehensive guide to provide you a solution for the easiest way of exam preparation. This will be a very helpful tool for preparing for your oral examination. 2. QUESTION & ANSWE ...Jan 12 -
ELECTROSTATIC FIELDS AND FIELD STRESS CONTROL
ELECTROSTATIC FIELDS AND FIELD STRESS CONTROL In response to an increasing demand for electrical energy, operating transmission level voltages have increased considerably over the last decades. Designers are therefore forced to reduce the size and weight of electrical equipment in order to remain competitive. This, in turn, is possible only throu ...Dec 17 -
WLECTRICAL CIRCUIT FOR REFRIG & AIR CONDITIONING
REFRIG & AIR CONDITIONING Refrigeration Refrigeration is the process required for safe storage of food or any other product to be transported, which necessitates that it is maintained at low temperatures. Whatever be the size of the process, it will have a cooling unit (evaporator), a refrigerant compressor and a con ...Dec 10 -
Freeboard
Freeboard The distance between the top of the hull and the waterline. As the ship is loaded, it sinks deeper into the water so the freeboard is reduced. The positioning of the load line mark is aimed at ensuring the freeboard is the minimum necessary for the safety of the ship. p/p = length between perpendiculars w/l = length a ...Dec 02 -
MARINE ENGINE ROTATION
ENGINE ROTATION Marine engine rotation considers Left Hand (LH) to be the standard while Right hand (RH) is considered "Opposite" rotation. You should ALWAYS view the rotation while standing behind the product looking at the flywheel. Although this sounds funny on the surface, anything short of this will confuse the issue and therefore this is a v ...Dec 01 -
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Recent Posts
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Welcome to DieselShip Blogs!
Blogging feature at DieselShip is active now !!! ...Sep 04 -
STRESS IN STEAM BOILERS
Stress in boiler drums Circumferential L=Length of cylinder t= Material thickness D= Diameter Fp= Force acting on cylinder due to pressure Fh= Resolved horizontal component of force Equal forces act on all surfaces. If a vertical section is cut then the forces may be considered to be resisted by the longitudinal seam for the horizontal directi ...Nov 16 -
TRANSFORMERS
Transformers A big advantage of A.C. transmission is the ability to easily change voltage by means of a transformer. As there are no moving parts maintenance is very low and efficiency very high ( typically 98%). A transformer consists of two insulated coils wound separately over a closed magnetic field, usually iron, of low reluctance. An alter ...Nov 13 -
CABLES
Cables General On Tankers all cables must be either lead alloy sheathed and armoured, mineral insulated copper sheathed ( the ends must be sheathed to prevent moisture being absorbed by the hygroscopic insulation material ) or non-mineral impervious sheathed and wire braided so long as they are laid in a pipe ( the csa of the wire must be less th ...Nov 13 -
FLUORESCENT LIGHTS
Types of fluorescent lights Discharge lamps Cold cathode type-only used for decorative lighting Hot cathode a, High pressure fluorescent (i)Mercury vapour types )Used mainly for street lighting (ii) Sodium type , )but sometimes used for deck lighting b, Low pressure Hot Cathode ...Nov 13 -
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Ramalingam
End of 5 months Vacation! See you all real soon
Recent Posts
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Engineering terms Featured
Engineering terms The system of measurement has been outlined with an introduction to SI units. Some of the common terms used in engineering measurement will now be described. Mass Mass is the quantity of matter in a body and is proportional to the product of volume and density. The unit is the kilogram and the abbreviation used is 'kg'. Large q ...Sep 20 -
VIBRATION
VIBRATION Many problems have their roots in, or manifest themselves as, vibration. Vibration may be in any linear direction, and it may be rotational (torsional). Vibration may be resonant, at one of its natural frequencies, or forced. It may affect any group of components, or any one. It can occur at any frequency up to those which are more commo ...Sep 19 -
The Realities and Myths of Bunker Fuel Contaminants
The Realities and Myths of Bunker Fuel Contaminants Chemical contamination in Bunker Fuels; what is it? Why does it occur? What are the damaging chemicals and effects on the ships engines? What are the common testing techniques used by laboratories? And what protection can the ship operators expect?You m ...Jul 18 -
SEA FARER RIGHTS AT SEA
SEAFARER RIGHTS AT SEA CONTENTS CHAPTER 1 YOUR LEGAL RIGHTS | INTRODUCTION | KNOW YOUR RIGHTS | INTRODUCTION | KNOW YOUR RIGHTS | SOURCES OF SEA FARER RIGHTS | BASIC RIGHTS UNDER ILO CHAPTER 2 IMO AND ILO | WHAT IS THE MARITIME LABOUR CONVENTION? | HOW TO FIND ...Jun 27 -
SEAFARER RIGHTS AT SEA, Chapter 7
SEAFARER RIGHTS AT SEA CHAPTER 7 CHAPTER 7 LAWS RELATING TO SEAMEN Contractual provisions The Agency will expect a crew agreement to contain contractual provisions governing the following matters: · ...Jun 27 -
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