Marine Machinery, Engines & Controls

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  • Modern Efficient Ships Engines and Engine Rooms
    Marine diesel engines and engine rooms have changed a bit since I was a young engineer at sea in the 1960’s. Nowadays modern engines are designed to be more economical and emit fewer toxic exhaust gas fumes.
  • Black Smoke from the Funnel: What to do?
    Black Smoke from the funnel is a sign of poor maintenance and malfunction of the machinery. It is a serious issue as it violates Marpol 73/78 Annex VI and can lead to inspections and detention of the ship. In a ship with multiple machines the identification of the faulty unit is a difficult task.
  • Marine Reciprocating Compressors: Correcting Piston to Head Clearance
    The adjustment of Bumping Clearance is a very critical adjustment of the clearance volume. If more the volumetric efficiency of the compressor suffers and if less the unloaded piston may hit the cylinder head and damage both. In this article we discuss the need of this clearance and its adjustment.
  • Methods for Controlling Shipboard Nitrous Oxide Emissions
    Learn about the techniques of controlling NOx emissions in modern day ships and what companies are doing to ensure that pollution to the environment due to NOx is reduced.
  • Modern Electrical Propulsion System for LNG Tankers
    Electrical Propulsion systems are not new to the marine industry. However, the system was limited to passenger vessels and some hi-tech research vessels. Recent trends and developments in power electronics have paved way for more advanced and modern trends in electrical propulsion.
  • Use of Overspeed Regulatory Mechanism in Ships
    How do you check that the speed of the main marine diesel engine does not shoot to dangerous limits in certain situations?
  • Bunkering Operations: Precautions, Checklists, Calculations & Corrections Explained
    An actual bunkering operation is carried out with bunker checklists. In this article, emphasis is made on the checklists, safety precautions, SOPEP locker and SOPEP equipment, temperature and density correction to calculate the quantity of oil bunkered. The formula for calculation has been included
  • Effects of Reformulated Fuels on Marine Pollution and net GHGs
    Emission from ships exhausts account for a 2-3% of all global CO2 emissions, along with quite sizeable amounts of SOx and NOx emissions. However, the International Maritime Organization (IMO) has capped the NOx in exhaust emissions and reduced the sulfur content in HFO used by ships main engines.
  • Nuclear Propulsion System for Ships using Small Nuclear Power Plants
    Have you ever wondered how a nuclear powered ship works? How is this nuclear energy created? What happens internally? Read further as I attempt to explain the process of nuclear propulsion within a ship
  • The Process of Refining Crude Oil
    The crude oil is pumped ashore by the export oil pumps via undersea pipelines to a landfall as close to the crude oil refinery as possible. The hydrocarbons have been partially refined on the production platform and is now ready for refining into the final products such as diesel oil and petroleum.
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