Glossary of Transportation Law Terms

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Uniflow Locomotive: An experimental locomotive which worked on the South Eastern Railway between 1849 and 1852 using a large, externally piped exhaust system. It did not find acceptance and was not used elsewhere.

Unit Trainer: An aviator designated to instruct in areas of special training to assist in unit training programs and achieve established training goals.

Upper Deck: The highest deck extending unbroken from bow to stern.

Unseaworthiness: The state or condition of a vessel when it is not in a proper state of maintenance, or if the loading equipment or crew, or in any other respect is not ready to encounter the ordinary perils of sea.