A (22) | B (29) | C (39) | D (16) | E (14) | F (27) | G (10) | H (16) | I (18) | J (1) | K (6) | L (26) | M (18) | N (8) | O (5) | P (24) | R (10) | S (45) | T (14) | U (11) | V (9) | W (6)
Glossary term Description
UHF

ultra-high frequency. Portable radio sets capable of sending and receiving signals between different areas on board large steel vessels

UKC

under-keel clearance. Allowance made to ensure a certain clearance between the ship's bottom and the seabed. See also DUKC.

ULCC

ultra-large crude carrier: 320,000+ dwt 

UNCLOS

United Nations Conference on the Law of the Sea

UNCTAD Code Now known as UN/LOCODE. UNCTAD is the United Nations Conference on Trade and Development.
unit loads

Unit loads are parts of a shipment that can be treated as a single unit during cargo handling and transportation. The most common unit loads are pallets and components with bases that resemble pallets. The most important properties of a unit load are that it can be loaded to ensure a tight fit, its modularity and its stability, the last of which ensures that it can be stowed safely and will not be damaged by load securing measures.

United Kingdom

England, Wales, Scotland, Northern Ireland and islands governed from the mainland (ie excluding the Channel Islands and the Isle of Man)

US Gulf Shipping abbreviation for the Gulf of Mexico.
USACE

US Army Corps of Engineers

USCG United States Coast Guard.