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The Annex V to MARPOL Convention entered into force on 31 December 1977. But, some of the recently conducted surveys revealed the facts that some garbage is still disposed of to the sea from the ships. And plastic garbage accounts for the largest single item found. Then, IMO revised this Annex and it's revised edition entered into force on 1 January 2013. The present Guidance Notes were officially released by Lloyd's Register of Shipping with the intention to make the requirements of the subject Annex earlier to understand and, consequently, to comply with. It is obvious today that the garbage thrown from the vessels can be deadly to marine life in the same was as oil or chemicals. The maximum danger comes from plastic stuff since plastic can float for years and get swallowed by fish or marine mammals mistaking it for food; in addition to that, fish can easily become trapped in plastic bags, nets and ropes. And, while some of the garbage comes from the people on land, significant part of it comes from vessels. Of course, many items will be degraded by the sea water; however, this is a very time consuming process - it can take months or even years, and, again, plastic is the worst one - it would take about 450 years to get it degraded by sea...