– Adequate spare parts for the propelling machinery together with the necessary tools for maintenance and repair shall be readily available for use while at sea for safe operation of the vessel. – The SMS of the vessel shall clearly indicate the minimum number of spares and tools required for the safe operation of the…
Microbial Degradation of lubricating oils onboard One of the vessel I served as Second Engineer suffered a sudden microbial degradation and infestation which caused USD 20000000 on engine repair and a 30 days of laid up with further consequent losses. The ship was about 20 years old with no history of Microbial attack on lube…
Plate type Heat Exchanger Plate type Heat Exchangers are made up from an assembly of identical metal plates pressed together. Such plates have with horizontal or chevron pattern corrugations. Each plate’s working space is protected by a nitrile rubber joint. The plates, which are supported beneath and hung at the top by metal rails on…
9 LITRES FOAM FIRE EXTINGUISHERS (Chemical Foam) Foam is an effective smothering agent, used for liquid fires mainly. It acts by flowing over the liquid fuel oil surface and isolating the fire from the air, also prevents re-ignition due to the foam stability. Usually the foams are of i. Protein Based ii. Synthetic …
Reverse Osmosis Reverse osmosis is one of the most desalination processes that is used widely on most ships and also for household water production. RO plant is considered one of the most successful method of desalination as the size of the system can be reduced or increased to suit the requirement varying from a house…
Alkalinity Treatment For pressures below 20 bar dissolved O2 in the feed does not cause any serious problems so long as the water is kept alkaline However cold feed should be avoided as this introduces large amounts of dissolved O2 are present, for pressures greater than 18.5 bar a dearator is recommended Feed Treatment Chemicals…
Ship Aft End Vibration – A report writing This article is furnished as a report writing to your superindent on Aft end vibration and Suggested remedies, From Second engineer Date: -DD.MM.YY Technical Superintendent XYZ Shipping Let Germany, Sub: Aft end vibration and Suggested remedies, From Second engineer M.T. XXXXX XXX Ref: – Your…
Ship Stabilizers and stabilizing systems A ship at sea has six degrees of freedom, i.e. 1. Roll, 2. Heave, 3. Pitch, 4. Yaw, 5. Sway, 6. Surge. – Of all these motions, only rolling motion can effectively be reduced in practice by fitting bilge keels, anti-rolling tanks or stabilizers. – A stabilising system is fitted…
