[meaning]

Horseshoe-shaped test piece used to detect the susceptibility of a material to stress corrosion cracking.

A document required on merchandise imported into the United States.

are registered in the United States and are subject to additional U.S. laws and regulations to which foreign-flag vessels are not. They must be owned by U.S. citizens, corporations, or governments and must be crewed mainly by U.S. citizens.

Urea Carrier.

Unanimous Consent

Abbreviation for the "Uniform Customs and Practice for Documentary Credits," published by the International Chamber of Commerce. This is the most frequently used standard for making payments in international trade; e.g., paying on a Letter of Credit. It i ...

Upper Explosive Limit

Abbreviation for "Uniform Freight Classification."

Upper Flammable Limit

Ultra High Frequency. (300-3000 MHz) The apparatus using these frequencies are the best one for internal communications on steel ships as they are not hampered by steel bulkheads.

Ultra High Pressure

United Kingdom Mutual

United Kingdom Association of Private Terminal Operators

UK Harbour Masters Association

UK Hydrographic Office abbreviations kgkg

United Kingdom forecast model. (Available via AccuWeather.com Professional.)

UK Major Ports Group

UK Pilots Association (Marine).

Ukraine (Flag)