#1 Marine Education Site
Image Credit: www.libramar.net Stern Tube: The stern tube is a hollow tube-like structure at the stern or rear part of the ship. A ship needs the propeller to drive it forward in water. The propeller, located outside the ship, needs to be connected to the engine inside the ship’s engine room. The propeller shaft is used …
Image Credit: Wikipedia.org FUEL INJECTION TIMING Checking of fuel injection pump timing: Turn 1 piston to TDC at the beginning of firing stroke. Turn backward to a point, a little earlier than fuel injection point. Shut fuel supply to engine, remove No. 1 fuel pump delivery valve assembly and put a bent pipe. Open fuel supply and when fuel lever is put to running position, oil …
Image Credit: wikipedia.org Definitions and Ship’s Dimensions Hull: The structural body of a ship including shell plating, framing, decks and bulkheads. Afterbody : That portion of a ship’s hull abaft midships. Forebody: That portion of a ship’s hull forward midships. Bow : The forward of the ship Stern : The after end of the ship …
Image Credit: almaco.cc Refrigeration: What is a Refrigerant? Refrigerants are used as working substances in a Refrigeration systems. Fluids suitable for refrigeration purposes can be classified into primary and secondary refrigerants. Primary refrigerants are those fluids, which are used directly as working fluids, for example in vapour compression and vapour absorption refrigeration systems. These fluids …
Air Compressor Image Credit: leelloyds.com Effects of leaking valves in Air Compressor: First Stage Suction: Reduce air delivery Reduce 2nd stage suction pressure Unload the compressor Increase running time. First Stage Delivery: Reduce air delivery Increase discharge temperature Less air drawn in, due to high-pressure air leaking back into cylinder. Second Stage Suction: Reduce air …
Image Credit: www.msecurity.ru When do the security measures come into force ? – 1st July, 2004. SOLAS amendments adopted in December 2002 : Chapter V: – Automated Identifications Systems(AIS) Chapter XI-1: -Ship identification number -Continuous Synopsis Record (CSR) Chapter XI-2: -Measures to enhance maritime security -International Ship and Port Facility Security (ISPS) Code (Parts A & …
Boiler : Boiler Automatic Burning System: 1. With correct water level, steam pressure transmitter initiates cut-in at about 1.0 bar below working pressure. 2. Steam pressure transmitter initiates Master Relay to allow ‘Air On’ signal to force draught fan. 3. Air feedback signal confirms ‘Air On’ and allows 30-sec. delay for purge period. 4. Then …
Exhaust Gas Boilers: About 30% – 34% of Fuel Energy input to engine are discharged to Exhaust Gas, as Thermal Energy. This thermal energy is converted into useful work in Exhaust Gas Boiler. Cochran Exhaust Gas Boiler: 1. A double-pass, vertical type, in which Exhaust gases from ME pass through 2 banks of tube. 2. …
Lubricating Oil Viscosity: 1. A measure of internal resistance to flow. 2. Viscosity of an oil changes with temperature, falling when temperature rises and vice versa. 3. For crankcase oil, viscosity is between 130 – 240 Sec. Redwood No. 1 at 60°C. 4. For cylinder oil, viscosity is 12.5 – 22 Cst. Viscosity Index, VI: …
Image Credit: Marinelink Survey: Authorised independent examination, investigation, and inspection, measuring or testing of ship structure, machinery and equipment, done and supervised by Surveyors appointed by regulatory or commercial organisations. Classification Societies: They are third party independent bodies e.g. ABS (American Bureau of Shipping), BV (Bureau Veritas), LR (Lloyd’s Register), ClassNK (Nippon Kaiji Kyokai), DNV …