International code - Negative Affirmative signifies distress.
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ISO SOLID CONTAMINANT CODE (ISO 4406)
A code assigned on the basis of the number of particles per unit volume greater than 5 and 15 micrometers in size. Range numbers identify each increment in the particle population throughout the spectrum of levels.
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HAGUE RULES
A Code of minimum conditions for the carriage of cargo under a bill of lading
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ASCII
Acronym for American Standard Code for Information Interchange, a standard method of representing alphanumeric characters with numbers in a computer
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COLREGS DEMARCATION LINES
Lines delineating the waters upon which mariners must comply with the International Regulations for Preventing Collisions at Sea 1972 (72 COLREGS) and those waters upon which mariners must comply with the Navigation Rules for Harbors, Rivers, and Inland Waters (Inland Rules). The waters outside the lines are COLREGS waters. For specifics concerning COLREGS Demarcation Lines see U.S. Code of Federal Regulations, Title 33, Navigation and Navigable Waters; Part 82, COLREGS Demarcation Lines.
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COORDINATED UNIVERSAL TIME (UTC)
The time scale that is available from most broadcast time signals. It differs from International Atomic Time (TAI) by an integral number of seconds. UTC is maintained within 1 second of UT1 by the introduction of 1-second steps (leap seconds) when necessary, normally at the end of Decem- ber. DUT1, an approximation to the difference UT1 minus UTC, is transmitted in code on broadcast time signals.
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IMO-Class
Group of dangerous or hazardous goods, harmful substances or marine pollutants in sea transport as classified in the International Dangerous Goods Code (IMDG Code)
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R22
R22 is a refrigerant gas whose full chemical name is monochlorodifluoromethane and whose chemical formula is CHCIF2. It is colorless, odorless and non-flammable. It is virtually non-toxic with a TLV of 1,000 ppm. Its relatively low toxicity and flammability levels render it suitable for use on gas carriers and is approved for such use under the IGC Code
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P-CODE
The precise code of the GPS signal, used by military receivers.
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Q SIGNALS
Conventional code signals used in radiotelegraphy, each signal of three letters beginning with Q and representing a complete sentence.
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PSEUDO-RANDOM NOISE
An apparently random but reproducible sequence of binary code used in the GPS signal.
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