![]() ![]() Segregated/Dedicated - Ballast kept in tanks segregated from cargo pipes and tanks.īallast Movement - A voyage or voyage leg made without any paying cargo in a vessel’s tanks. Permanent - Ballast carried in ship’s tanks that were designed to carry nothing else. ![]() Ballast can be taken into cargo tanks, double bottoms, fore and aft peak tanks and/or segregated ballast tanks, (SBT).Ĭlean - Term applied to the seawater used for ballast when it is not contaminated by any oil and is carried in clean tanks.ĭirty - Term applied to the sea water used for ballast when it is contaminated with the remnants or residue left in cargo tanks that previously carried crude oil or heavy persistent refined oils. Europe./ Carib.īallast - Seawater taken into a vessel’s tanks in order to submerge the vessel to proper trim. coastwise voyages.īackhaul - A deviation to move cargo on the return leg of a voyage for the purpose of minimizing ballast mileage and thereby reducing transportation cost. Sometimes called ship’s articles.ĪTRS - A standard of reference published by a group of American Tanker brokers and expressed in dollars and cents for thousands of possible voyages. API gravity is measured by a hydrometer instrument having a scale graduated in degrees API.Īrticles of Agreement - The Document containing all particulars relating to the terms of agreement between the Master of the vessel and the crew. and other countries.Īmidships (or ‘Midships’) - The middle portion of a vessel.ĪPI - The American Petroleum Institute, founded in 1919, was the first oil trade association to include all branches of the petroleum industry.ĪPI Gravity (Relative Density) - A means used by the petroleum industry to express the density of petroleum liquids. ![]() Load-Line Acts - it has the authority to assign load lines to vessels registered in the U.S. The air draft of a vessel will vary depending upon the draft of the vessel and its trim.Īllowed Lay Time - The number of hours allowed for loading and discharging a cargo as stipulated in a Charter Party.Īmerican Bureau of Shipping (ABS) - A Classification Society. When a vessel has to transit areas where there may be overhead obstructions (bridges, power lines, cranes, loading arms, etc.) it is vital to know what its air draft (draught) will be at the time of transit. ![]() Sometimes called attendance fee.Īir Draft - The distance from the vessel’s water line to the upper most point on the vessel, usually the top of a mast or radar tower. Between the stern and the midship section of the vessel.Īfterbody - The section of the vessel aft of amidships.Īframax - A tanker of such size as to take commercial advantage under Worldscale (generally, tankers 80,000-119,000 DWT).Īgency Fee - A fee charged to the ship by the ship’s agent, representing payment for services while the ship was in port. A vessel is said to be adrift when she breaks away from her moorings, warfs, and so on.Īft, After - Toward the stern or the back of the vessel. Sometimes called gangway ladder.Īdministration – The government of the state whose flag the ship in entitled to fly.Īdrift - Floating at random not fastened by and kind of mooring at the mercy of winds and currents loose from normal anchorage. Accommodation Ladders are usually supplied with two platforms, one at each end. They cleaned one of the module's windows using towels that they then also jettisoned and retrieved a final science experiment, a biological sample exposure package, located near the hatch to the Poisk airlock.Accommodation Ladder - A term applied to a portable flight of steps suspended over the side of a vessel from a gangway to a point near the water, providing any easy means of access from a small boat. The duo then moved to the opposite side of Zvezda to finish out their tasks for this spacewalk. The cosmonauts also captured high-resolution photography of the boom upon which a high-data antenna is mounted at the very aft end of the Zvezda service module. "Well, it hasn't been washed for quite some time," replied Petelin. "That could have made some good fries in it." "It looks like a dirty frying pan," said Prokopyev. The inspection comes almost 23 years after Zvezda was launched atop a Russian Proton rocket in July 2000. The deflectors shield the station from the plume of the module's engines. The two spacewalkers also photo documented the condition of the plume deflectors at the aft end of Zvezda service module for later analysis by Russian engineers on the ground. An outdated white, cylindrical communications device is seen floating away from the International Space Station after it was jettisoned by Russian cosmonauts Sergey Prokopyev and Dmitry Petelin during a spacewalk on June 22, 2023. ![]()
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