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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…
Read More “🚢 Cargo Calculations on Gas Tankers: A Complete Guide” »
Liquefaction – it’s a term used as a ‘catch-all’ phrase to describe at least two moisture-related cargo failure mechanisms. The results, however, are the same – vessel instability and ultimately the vessel sinking. Classical liquefaction Classical liquefaction occurs when moisture between the cargo particles becomes sufficiently pressurised, causing the particles to separate. “Then the cargo…
Prior Arrival Port: Pre-Transfer Meeting: Manifold Connection: Heightened level of alertness and caution must be exercised when entering and operating in this area. Adequate level of PPE must be complied with when entering these areas. Before Loading: Loading Operation: Ensure all cargo tanks nominated to load in that particular port is flushed via the suction…
SFO (Seal Flush oil) Unit: SFO unit is used to heat the cargo pump seals to the required temperature. The function of the seal flush pumps is to circulate seal flush oil (SFO) through the cargo pumps thereby heating up the cargo pump seal space and heat the remaining product in it. The SFO oil…
Bitumen is a mixture of organic liquids that are highly viscous, black, sticky, entirely soluble in carbon disulphide, and composed primarily of highly condensed polycyclic aromatic hydrocarbons. Bitumen is the residual (bottom) fraction obtained by fractional distillation of crude oil. It has a specific gravity range between 1.00 to 1.04 and average volatility. It is…
Records of the operations done with noxious liquids are to be maintained to provide evidence of the processes that were followed to ensure that no pollution was caused. MARPOL 73 / 78, annex II deals with noxious liquids carried in bulk. The student is advised to keep a copy of MARPOL handy while studying the…
•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…