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</LabelSeparator><Level>2</Level><ElementName>us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><PreferredLabelRole>terseLabel</PreferredLabelRole><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="FYp0YTD" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>&lt;div&gt;&lt;font style="font-face: Times New Roman" size="2" color="#000000"&gt;&lt;b&gt;NOTE 1 - DESCRIPTION OF BUSINESS&lt;/b&gt;&lt;/font&gt;&lt;/div&gt;
&lt;div&gt;&lt;font style="font-face: Times New Roman" size="2" color="#000000"&gt;&lt;b&gt;&lt;/b&gt;Navios Partners is an international owner and operator of dry cargo vessels, formed on August&amp;#160;7, 2007 under the laws of the Republic of the Marshall Islands by Navios Holdings, a vertically integrated seaborne shipping and logistics company with over 55&amp;#160;years of operating history in the drybulk shipping industry. Navios GP L.L.C. (the &amp;#147;General Partner&amp;#148;), a wholly owned subsidiary of Navios Holdings, was also formed on that date to act as the general partner of Navios Partners and received a 2% general partner interest in Navios Partners.&lt;/font&gt;&lt;/div&gt;
&lt;div&gt;&lt;font style="font-face: Times New Roman" size="2" color="#000000"&gt;Navios Partners is engaged in the seaborne transportation services of a wide range of drybulk commodities including iron ore, coal, grain and fertilizer, chartering its vessels under medium to long-term charters. The operations of Navios Partners are managed by Navios ShipManagement Inc., a subsidiary of Navios Holdings (the &amp;#147;Manager&amp;#148;) from its offices in Piraeus, Greece and Monaco.&lt;/font&gt;&lt;/div&gt;
&lt;div&gt;&lt;font style="font-face: Times New Roman" size="2" color="#000000"&gt;Pursuant to the initial public offering (&amp;#147;IPO&amp;#148;) on November&amp;#160;16, 2007, Navios Partners entered into the following agreements:&lt;/font&gt;&lt;/div&gt;
&lt;div&gt;&lt;font style="font-face: Times New Roman" size="2" color="#000000"&gt;(a)&amp;#160;a management agreement with the Manager pursuant to which the Manager provides Navios Partners commercial and technical management services;&lt;/font&gt;&lt;/div&gt;
&lt;div&gt;&lt;font style="font-face: Times New Roman" size="2" color="#000000"&gt;(b)&amp;#160;an administrative services agreement with the Manager pursuant to which the Manager provides Navios Partners administrative services;&amp;#160;and&lt;/font&gt;&lt;/div&gt;
&lt;div&gt;&lt;font style="font-face: Times New Roman" size="2" color="#000000"&gt;(c)&amp;#160;an omnibus agreement with Navios Holdings (&amp;#147;Omnibus Agreement&amp;#148;), governing, among other things, when Navios Partners and Navios Holdings may compete against each other as well as rights of first offer on certain drybulk carriers.&lt;/font&gt;&lt;/div&gt;
&lt;div&gt;&lt;font style="font-face: Times New Roman" size="2" color="#000000"&gt;As of June&amp;#160;30, 2013, there were outstanding: 65,284,163 common units and 1,332,334 general partnership units. Navios Holdings owns a 23.4% interest in Navios Partners, which includes a 2% general partner interest.&lt;/font&gt;&lt;/div&gt;</NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>The entire disclosure for the business description and basis of presentation concepts.  Business description describes the nature and type of organization including but not limited to organizational structure as may be applicable to holding companies, parent and subsidiary relationships, business divisions, business units, business segments, affiliates and information about significant ownership of the reporting entity.  Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).</ElementDefenition><ElementReferences>No definition available.</ElementReferences><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>DESCRIPTION OF BUSINESS</Label></Row></Rows><Footnotes /><IsEquityReport>false</IsEquityReport><ReportName>DESCRIPTION OF BUSINESS</ReportName><MonetaryRoundingLevel>UnKnown</MonetaryRoundingLevel><SharesRoundingLevel>UnKnown</SharesRoundingLevel><PerShareRoundingLevel>UnKnown</PerShareRoundingLevel><ExchangeRateRoundingLevel>UnKnown</ExchangeRateRoundingLevel><HasCustomUnits>true</HasCustomUnits><IsEmbedReport>false</IsEmbedReport><IsMultiCurrency>false</IsMultiCurrency><ReportType>Sheet</ReportType><RoleURI>http://www.navios-mlp.com/role/DisclosureDescriptionOfBusiness</RoleURI><NumberOfCols>1</NumberOfCols><NumberOfRows>2</NumberOfRows></InstanceReport>
