Category Archives: Marine Technology

Maintenance and It’s Types

Picture Credit: reliableplant What is Maintenance? The technical meaning of “maintenance” involves functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery and supporting utilities in industrial and residential installations. Objectives of Maintenance Minimize loss of productive time Minimize … Continue reading

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Enclosed Space Dangers and Entry Procedure

Author: Md Taifur Rahman Dangers of entering an enclosed space: 1. Toxic atmosphere A toxic atmosphere may cause various acute effects including impairment of judgment, unconsciousness and death. 2. Oxygen deficiency      Can be lacking for: Displace of air by another gas … Continue reading

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Crankcase inspection

Author: Md Taifur Rahman Preparation: Tool box meeting carried out. Carry out proper risk assessment and work permit taken Enclosed space entry permit to be taken and enclosed space entry procedure to be followed Inform bridge and put warning notice … Continue reading

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Isolated and Earthed Neutral System

Author: Usman Karneh The function of an electrical system is to safely convey the power from the point of generation (source) to where it is required the various loads or equipment connected to it. The electrical source, like the load … Continue reading

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Ship Rudder

  http://marinestudy.net/ship-rudder-2/ship-rudder/ Ship Rudder from Mohammud Hanif Dewan MIMarEST, MRINA

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Accidental Agrounding: Chief Engineer’s Responsibility

Once a vessel has grounded there are a number of considerations that need to be addressed: Has the hull of the vessel been broached during grounding. Sounding all the various tanks that are situated behind the outer hull can check … Continue reading

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Checking Performance of Main Engine

In order to monitor the engine performance, we would need to measure the power output and fuel consumption of the engine. This will allow the performance of the engine to be measured against previous and even test bed readings. The … Continue reading

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Isolation of One Unit of Main Engine

One unit may need to be disabled when any of these conditions exist: Damage to a main component of the combustion chamber Damage to a crosshead or bottom end bearing on that cylinder

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Ship Motons and Stresses

Ship Motion and Stresses from Mohammud Hanif Dewan MIMarEST, MRINA

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F.O. Purifier

What is purifier and why we use it on board? As the name implies, Purifier purifies fuel oil used on board. It is a machine that separates impurities from fuel oil. Impurities can be both solid and liquid/water. Why there … Continue reading

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Closed loop control Main Engine Jacket Cooling System

By Mohammed Ismail

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Ship Structural Components

Ship Structural Components from Mohammud Hanif Dewan MIMarEST, MRINA

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Ship’s Transverse Stability

Ship's Transverse Stability from Mohammud Hanif Dewan MIMarEST, MRINA

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Effects of Impurities in Fuel Oil

Q. Write brief notes on the adverse effects that a fuel containing high value of the following may cause: (a) Viscosity (b) Density (c) Sulphur (d) Corodson Carbon Residue (e) Asphaltene (f) Vanadium & Sodium (g) Ash (h) Water (By … Continue reading

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Scavenging and Turbocharging (Questions & Answers)

By Maklub Al Mostofa Q. What is scavenging? Name the types of scavenge used for large two stroke engine. Describe the advantage of Uniflow scavenging. SCAVENGING: It is the removal of residual exhaust gas and its replenishment with fresh air in … Continue reading

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Enclosed Space Entry

By Maklub Al Mostofa Enclosed Space: For the purpose of this Guide, an ‘Enclosed Space’ is defined as a space that has the following characteristics: Limited openings for entry and exit. Unfavourable natural ventilation. Not designed for continuous worker occupancy … Continue reading

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The Origin of Shipping & Insurance

By F. R. Chowdhury Shipping is one of the oldest businesses in the world. Risk management and insurance is also equally old business. They are closely linked with one another. In fact the development of insurance took place in support … Continue reading

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Wärtsilä EnergoProFin Propeller

Image Credit: Wärtsilä The efficiency of the ship’s propeller is an important part of a ship’s overall propulsion efficiency. The Wärtsilä EnergoProFin has become a popular retrofit solution to improve the propulsion efficiency and hence improve the fuel efficiency of … Continue reading

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Ignition Quality Parameters of Slow Speed Diesel Engine

Ignition quality parameters: Energy Viscosity Maximum firing pressure. 4. Injection delay 5. Ignition delay . 1. Energy comparison • The injection pump is a volumetric pump • The higher the density the more energy it contains per volume unit • The … Continue reading

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High Pressure Water Mist (Hyper Mist) System

Mandatory in passenger ships with GT > 500 and cargo ships with GT >2000, for fire extinguishing in machinery spaces of category A with volume > 500 m3 (IMO MSC/Circ.913). System introduced as an alternative to the Halon systems (prohibited in 1994) … Continue reading

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Main Engine Air Starting System

By Mohammed Ismail

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Star-Delta Starting of Three Phase Motor

By Mohammed Ismail

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DIESEL ENGINE CRANKCASE EXPLOSION

INTRODUCTION: For any fire to begin, the fire tringle needs to be completed. To complete a fire tringle there must be present of a combustible material, oxygen or air to support combustion and a source of heat in proportional ratio … Continue reading

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Diesel Engine Scavenge Fire

INTRODUCTION:  For any fire to begin, the fire tringle needs to be completed. To complete a fire tringle there must be present a combustible material, oxygen or air to support combustion and a source of heat at a temperature high … Continue reading

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Cylinder Lubrication System

Cylinder lubrication in a low-speed main propulsion diesel engine: Cylinder lubrication For marine diesel engines operating on residual fuels containing sulphur, cylinder lubrication must generally serve the following purposes: ■ Create and maintain an oil film to prevent metal to … Continue reading

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Heat Treatment Process

Heat Treatment Process from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Problems in Boilers

Image Credit:www.globalspec.com   Some common boiler problems are described below: Fires Cleanliness of the heat recovery surfaces after the boiler can often be judged by observing the gas pressure differential above and below. Any significant rise in this value should … Continue reading

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Fuel Injector of Diesel Engines

Image Credit: www.riceweightloss.com Older loop scavenged engines may have a single injector mounted centrally in the cylinder head. Because the exhaust valve is in the centre of the cylinder head on modern uniflow scavenged engines the fuel valves (2 or … Continue reading

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The Cylinder Liner

The Cylinder Liner of Diesel Engines from Marine Study

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Boiler Water Treatment

In the draft “Code of practice for the design, safe operation, maintenance and servicing of boilers”, a requirement is made for regular water-quality monitoring of both limited-attendance boilers and unattended boilers.

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Carbon Steel Alloys

Image Credit: Taybro Alloys Stainless Steel Carbon is the most important component in commercial steel alloy. Increasing carbon content increases hardness and strength and improves hardenability. But carbon also increases brittleness and reduces weldability because of its tendency to form … Continue reading

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Metallurgical Testing

Image Credit: www.upc.edu Metallurgical Testing from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Metallurgical Testing

Metallurgical Testing from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Marine Growth Protection System (MGPS)

Marine Growth Protection System (MGPS) from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Properties of Fuel Oil and Bunkering Procedure

By Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Lubrication

Properties of Lubricats and Lubrication from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Gear Pumps

Gear Pumps from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Engine Bearings

By Marine Study

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Ship Construction (Structure Part)

Ship Construction (Structure Part) from Marine Study

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Boiler Mountings

By Engr. Omar Sadath

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Introduction of Boilers

By Engr. Omar Sadath

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Pump and Positive Displacement Pumps

Positive Displacement Pumps from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Classification Societies

2 classification societies from Sulaiman Oladokun

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Emission from ship

Emision from ship from Oladokun Sulaiman

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Watch keeping duties , responsibilities and cargo documentation

Watch keeping duties , responsibilities and cargo documentation from Oladokun Sulaiman

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STCW

Stcw from Oladokun Sulaiman

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Corrosion in Metals

Corrosion in Metals from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Ship Construction

Ship Construction by Jayan Pillai from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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“Technology Innovations for Cost- effective Energy Efficiency Measures”

Technology Innovations for Cost- effective Energy Efficiency Measures from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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“Materials Used in Shipbuilding”

MATERIAL USED IN SHIP BUILDING  

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Metallurgy

Metallurgy from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Ship Form Coefficients

Ship Form Coefficients from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Marine Engineer Officer Class- 1 (Unlimited) CoC Oral Exam Preparatory Course Syllabus as per IMO Model Course 7.02

Department of Shipping, Bangladesh approved MEO Class- 1 (Unlimited) CoC Oral Exam Preparatory Course as per IMO Model Course 7.02 from Mohammud Hanif Dewan

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Marine Engineer Officer Class-2 & 1 (Unlimited) CoC Exam Preparatory Course Syllabus as per IMO Model Course 7.02

Department of Shipping, Bangladesh approved MEO Class-2 & 1 (Unlimited) CoC Exam Preparatory Course as per IMO Model Course 7.02 from Mohammud Hanif Dewan

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Marine Engineer Officer Class-3 CoC Exam Preparatory Course Syllabus as per IMO Model Course 7.04

Department of Shipping, Bangladesh approved MEO Class-3 CoC Exam Preparatory Course as per IMO Model Course 7.04 from Mohammud Hanif Dewan

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Two Years Pre-sea Course Syllabus of Department of Shipping, Bangladesh

02 Years Pre-sea Course Syllabus of Department of Shipping, Bangladesh from Mohammud Hanif Dewan

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Marine Electrical Hazard and Zone

Marine electrical hazard and zone from Oladokun Sulaiman

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Electrical safety and protections

Electrical safety and protections from Oladokun Sulaiman

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Marine Purifier

Marine Purifier from Mohammud Hanif Dewan

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MARPOL Annex I and Oily Water Separator

MARPOL Annex I and Oily Water Separator from Mohammud Hanif Dewan

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Fresh Water Generator

Fresh Water Generator from Mohammud Hanif Dewan

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Fire Fighting and SOLAS Requirements

Fire Fighting and SOLAS Requirements from Mohammud Hanif Dewan

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Shipboard High Voltage- Safeties and Applications

Shipboard High Voltage- Safeties & Applications from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Surveys of Merchant Ships

Surveys of Merchant Ships from Mohammud Hanif Dewan

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Marine Steering Gear and SOLAS Requirements

Marine Steering Gear and SOLAS Requirements from Mohammud Hanif Dewan

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Marine Refrigeration and Air Conditioning

Marine Refrigeration and Air Conditioning from Mohammud Hanif Dewan

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Centrifugal Pump

Centrifugal Pump from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Basic Control Theory

Basic Control Theory from Mohammud Hanif Dewan

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Ship Construction- Ship Dimensions

By Mohammud Hanif Dewan

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MARPOL Annex IV & Sewage Treatment Plant

MARPOL Annex IV & Sewage Treatment Plant from Mohammud Hanif Dewan  

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Marine Diesel Engine Exhaust Gas Emissions Control Technologies

Marine Diesel Engine Exhaust Gas Emissions Control Technologies from Mohammud Hanif Dewan, IEng, IMarEng, MIMarEST, MRINA

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Boiler Survey

BOILER SURVEY Introduction   Boilers are inspected to maintain the regulatory requirement. Regular internal and external examination during such survey constitutes the preventive maintenance schedule the boiler goes through to have a safe working condition.

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Responsibilities of a Chief Engineer for a ship in Dry-Dock

                                         Drydocking is one of the most important activities that a vessel may come across. Hence a good planning and co-ordination … Continue reading

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Bunkering Procedure

Bunkering Procedure The actual Bunkering operation is carried out with bunker checklists. In this article, emphasis is made on the checklists, safety precautions, SOPEP locker & SOPEP equipments, temperature & density correction to calculate the quantity of oil bunkered. Formula … Continue reading

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MARPOL Annex VI- Emissions Control Development

Introduction: IMO ship pollution rules are contained in the “International Convention on the Prevention of Pollution from Ships”, known as MARPOL 73/78. On 27 September 1997, the MARPOL Convention has been amended by the “1997 Protocol”;, which includes Annex VI … Continue reading

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Bismilla-hir-Rahma-nir-Rahim

 Surah Alaq: Meaning in English: Recite with the name of your Lord Who created, He made man from the clot of blood, Recite, for your Lord is the Most Generous, Who taught writing by the pen. Taught man what not. … Continue reading

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