A '''Tramp line''' (from which is also derived the phrase "tramp steamer") is an ocean carrier company operating vessels ('''Tramp steamers''' or '''Trampers''') not on regular runs or schedules. They call at any port where [[cargo]] may be available.<ref>U.S. Department of Transportation Maritime Administration [http://www.marad.dot.gov/publications/glossary/glossary.html]</ref> They are available to charter in several ways:
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A '''Tramp line''' is an ocean carrier company operating vessels ('''Tramp steamers''' or '''Trampers''') not on regular runs or schedules. They call at any port where [[cargo]] may be available.<ref>U.S. Department of Transportation Maritime Administration [http://www.marad.dot.gov/publications/glossary/glossary.html]</ref> They are available to charter in several ways: