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What is DGPS? Functioning, Limitations & Features
Differential Global Positioning System (DGPS) is an enhancement to Global Positioning System that uses a network of fixed, ground-based reference stations to broadcast the difference between the positions indicated by the satellite systems and the known fixed positions. These stations broadcast the difference between the measured satellite pseudo ranges and actual (internally computed) pseudo ranges,…
What is Chain Register and its contents ?
It is a booklet called form 99, in an approved format which is to be maintained upto date as per requirement of the dock safety regulation and endorsed & signed by a competent person as required. It contains certificate of tests and registers all reports of examination of load bearing machinery, chains and wire ropes…
CRUDE OIL WASHING PRECAUTIONS AND PROCEDURES
Crude oil washing was made mandatory under MARPOL Annex 1 regulation 13 which states that every crude oil tanker which is 20000 dwt and above must be fitted with COW system for every cargo hold tank. To perform Crude oil washing in a correct and efficient manner every ship must have – • Efficient and approved…
How to become a Fitter in Merchant Navy ?
Fitter is a important rank in the the Engine Department of a Merchant Navy ship. Fitter comes under Second Engineer and his job is to follow the orders given to him by Second Engineer. Fitter assists the Engineers with the maintenance and also does the fabrication work as per requirement under the supervision of Second…
How to become a Bosun in Merchant Navy ?
Bosun is the boss of the deck crew of a Merchant Navy ship. Bosun comes under Chief Officer and his job is to follow the orders given to him by Chief Officer and to get the work done from the deck crew. Bosun assists chief officer with mooring operations, anchor operations, chipping & painting operation…
How to become a Oiler in Merchant Navy ?
Oiler also called as Motorman is a important rank in the the Engine Department of a Merchant Navy ship. Oiler comes under Second Engineer and his job is to follow the orders given to him by Second Engineer or the Duty Engineer. Oiler assists the Engineers with the maintenance and keeps the areas allocated to clean…
How to become a Electro Technical Officer or ETO in Merchant Navy?
If you want to work on a Merchant Navy vessel as a Electrical Engineer, you need to do a Electro Technical Officer or ETO course. The Electro Technical Officer or ETO of a ship is responsible for the safe operation and maintenance of the electrical and electronic components available onboard. Course Duration and Eligibility Criteria…
Is Merchant Navy a good career option for Girls
Merchant navy is a very challenging field, it has its own advantages and disadvantages. Merchant navy does offers very good salaries and a lot of travel opportunities but it also demands a lot of courage and patience. In this article, we are going to discuss about the opportunities and challenges a girl cadet faces during her tenure…
Shipping Abbreviations & Full Forms
A/B: Able bodied seaman, a member of the crew who is able to perform all duties of an experienced seaman. A/S: Alongside AA: Always afloat AAAA: Always accessible always afloat AAOSA: Always afloat or safely aground AARA: Amsterdam-Antwerp-Rotterdam Area ABT: About ADCOM: Address Commission AFSPS: Arrival First Sea Pilot Station (Norway) AG: Arabian Gulf – also called PG – Persian Gulf AGW: All going well AHL: Australian hold ladders…
EXERCISE 28 — AZIMUTH SUN Numerical Solutions
NOTE: Also, we know that NOTES: Naming of Azimuth: The prefix N or S is the name same as C whereas suffix E or W depends on the value of LHA. If LHA is between 0 to 180, the body lies to the WEST and if it is between 180 and 360, the body lies to…
Principle of Navigation by Capt T.K Joseph & Capt Rewari FREE Pdf Download
Principle of Navigation by Capt Joseph & Rewari FREE Pdf Download
Procedures and precautions for Tank Cleaning and Gas free Operation for Oil tankers
Tank cleaning – The process of removing hydrocarbon vapours, liquids or residues. Tank cleaning may be required for one or more of the following reasons: Responsibility : The Chief Officer is in charge of and shall supervise as the person in charge of the Tank Cleaning, Hydrocarbon Gas (HC) Purging, Gas Freeing & Re-Inerting operations. He shall…
Crude Oil Washing (COW) onboard Ships – Explained
Piping System with respect to Crude Oil Washing: The pipeline and valves incorporated in the crude oil washing system shall be of steel or equivalent material and shall have adequate strength having regard to the pressure it may be subjected and shall be properly jointed and supported. The crude oil washing system should contain permanent…
Crude Oil Washing (COW) Procedure & Precautions on Ships
CRUDE OIL WASHING PRECAUTIONS AND PROCEDURES Prior to arrival at the discharge port, the following must be carried out: No C.O.W. is to be started until the Master has satisfied himself that the following has or will be complied with:
What is Official Log Book – Regulations, Entries
Official Log Book means the log book kept at the bridge of the ship in accordance with the provisions of the Merchant Shipping Act. Offical logbook is considered to be a running log of all official events such as Arrival / Departure of the vessel to/from the port, Draughts, Freeboards, Onboard Emergency Drills, Crew onboard, Fuel/Fresh…
ROR Cards
ROR Cards – also called Rules of the Road cards are very helpful for learning perspective. These cards show the view forward from the deck of various vessels (power, sailing and fishing) of developing traffic situations at sea. In each case the mariner has to decide the correct course of action to navigate his vessel…
Stability 1 – Chapter 7 Final KG
Solution: Ship’s weight KG VM 2000t (load) 4.2m 3400 tm 300t (load) 2.0m (+) 600 tm 200t (load) 3.2m (+) 640 tm 500t (load ) 1.0 m (+)500 tm Final W = 300t …
Stability 1 – Chapter 6 Centre of Gravity
Solution: Given:- Weight = 8800t,Original KG =6.2m,Cargo loaded = 200t,KG = 1.7m Ship’s weight KG VM 8800 t 6.2m 54560tm (+) 200 load 1.7m Final VM 54900 tm Final W – 9000 t Final VM 54900 tm So, we can calculate Final KG = (Final VM/ Final W)Final KG = (54900 / 9000)= 6.1m Here…
Stability 1 – Chapter 5 Effect of Density Solutions
Stability 1 – Chapter 5 Effect of Density Solutions > Exercise 5: Effect of density on draft and displacement – FWA ; DWA ; loadliness of ship. Solution: Displacement (W) = 16000 tTPC = 20 & SW draft = 8.0m We know that: Displacement when in SW = ( L X B x draft) x…
Stability 1 – Chapter 4 Solutions
Stability 1 – Chapter 4 Solutions for Exercise 4: Some important terms – displacement; deadweight; form coefficient; reserve buoyancy; Tonnes per centimetre. Solution : Area of box shape vessel = (L x B)= 120m x 15mLight draft = 4m Light displacement = (u/w volume) x ( density)= (L x b x d )x (1.025)= (120…