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Monthly Archives: April 2021

Anchoring glossary of Terms and abbreviations

  Aframax (tanker) An AFRA (Average Freight Rate Assessment)max is a medium-sized oil tanker which ranges in size between 80,000 and 119,999 deadweight tonnes. Aframax tankers have an average cargo carrying capacity of 750,000 barrels. Anchor Holding Power The holding power of an anchor is

Fresh Water Generator

Modern ships today are equipped with fresh water generators. They enable an unlimited supply of fresh water to be produced. With modern efficient fresh water generators, ships normally take a minimum amount of fresh water and produce the rest on board. Every crew uses about

Anchor swinging circle

Monitoring the drag with swing circle A ship at anchor will swing around the anchored position in the wind. A ship at anchor will swing around the anchored position in the wind. It is also recommended to draw a small circle on the chart around

MARPOL ANNEX II- NOXIOUS SUBSTANCE IN BULK

Annex II Regulations for the control of pollution by Noxious Liquid Substances in Bulk Details the discharge criteria and measures for the control of pollution by noxious liquid substances carried in bulk The discharge of their residues is allowed only to reception facilities until certain

Gyro Compass

The ships main gyro compass gives the heading of the vessel with respect to true north. A Gyro compass is a form of gyroscope, used widely on ships employing an electrically powered, fast spinning gyroscope wheel and frictional forces among other factors utilizing the basic

Emergency Recovery of anchor and cable

Occasionally the power of the windlass may be insufficient to recover the anchor, even in moderate weather. This can be due to mechanical inefficiency in the windlass due to excessive friction in gears for example, or to a reduction in power of the windlass motors,

Traffic Separation Schemes and COLREG

Traffic Separation Schemes ; Avoidance of Collisions Relatively few collisions occur in the open sea. The majority occur in coastal waters, in the approaches to ports, and within ports themselves. This is to be expected given that the risk of collision increases in relation to

Magnetic Compass

As per Chapter V of SOLAS 74, as amended, a magnetic compass is a compulsory part of ship borne navigational equipment. This is in addition to the gyro compass & suitably placed repeaters on the ship. This is so primary because of the reliable dependence

Knowledge Of Safety Systems on Board

Safe Practices: The Aim of this section is to ensure that the seafarer does not, at anytime, jeopardize the safety of his shipmates or himself when working in hazardous areas. a) Safe practices for working over side and aloft.b) Safe practices when entering into enclosed

The Trapezoidal Rule

Stability is the science of calculating the ability of ship to remain upright in all Conditions of weather and seas. One of the important aspects of determining such stability is the knowledge of areas and the volumes of the ship. Even though practical stability calculations