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Vapour produced above the surface of a boiling cargo due to evaporation is called Boil off and is caused by heat ingress or a drop in pressure. Heat is transferred to the cargo through the insulation. Cargo moving or sloshing in the tank. Vapour extracted from a tank reduces pressure Reduced vapour pressure encourages more…
Direct Reduced Iron (DRI) often concentrate on the precautions that shipowners should take when carrying this potentially hazardous cargo. Less attention on this issue is paid to charterers and the impression may be that this is a matter for shipowners and not a concern for charterers. This is definitely not the case. Claims can and…
“The carrier shall properly and carefully load, handle, stow, carry,keep, care for and discharge the goods carried.” Hague Rules, Articles iii, Rule 2 Strength of tank tops, tween decks, hatchcovers and weather-decks When preparing cargo loading plans, it is important that the ship should be loaded as close as possible to its maximum deadweight or…
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For the purpose of stowage of dangerous goods IMDG Code divides the ships into two groups 1. cargo ships or passenger ships carrying a number of passengers limited to not more than 25 or to 1 passenger per 3 m of overall length, whichever is the greater number;2. other passenger ships in which the limiting…
The roll-on/roll-off ship is one of the most successful types operating today. Its flexibility, ability to integrate with other transport systems and speed of operation have made it extremely popular on many shipping routes. The roll-on/roll-off ship is defined in the November 1995 amendments to Chapter II-1 of the International Convention for the Safety…
Heavy Lift – Cargo heavier than the SWL of the vessels gear. It cannot be lifted by the ship’s gear in the normal mode and requires special rigging.Due care should be exercised during planning the stow, loading and securing so that the safety of the personnel, cargo and vessel is not jeopardized Planning the stow…
Definitions Timber means sawn wood or lumber, cants, logs, poles, pulpwood and all other types of timber in loose packaged forms but not including wood pulp or similar cargo. Cant means a log that is cut in slabs, so that two opposite or sometimes three sides are flat and the other(s) curved. Timber Deck cargo…
Refrigerated Cargoes Classes Refrigerated Cargoes can be divided in to three classes. Frozen Cargo: eg. Meat, Butter, Poultry and Fish. These cargoes are carried in a hard frozen state at temperatures around -8 Deg Centgde to -12 Deg Centgde to prevent growth of bacteria. Chilled Cargo: eg. Cheese, eggs and fresh vegetables. Temperatures maintained in…
Cargoes in chemical tankers A chemical tanker is primarily designed for the carriage of dangerous chemicals in bulk. These chemicals are listed in the IMO Bulk Chemical Codes. In addition to the cargoes listed in the Codes, chemical tankers may carry a variety of other liquid products. Some chemical tankers carry a wide range of…
Gas tankers—whether carrying LNG (Liquefied Natural Gas) or LPG (Liquefied Petroleum Gas)—transport some of the most complex cargoes in the maritime industry. Unlike crude oil or dry bulk, these cargoes are highly sensitive to temperature, pressure, and density variations, making accurate cargo calculations essential for safety, efficiency, and commercial transparency. 🔹 Why Cargo Calculations Matter…
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