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2 A B C D E F G H I J L M N O P Q R S T U V W X Y
U/A Underwriting Account
U/L Underlying
U/W Underwriter
UCB Unless Caused By
UCC Container Ship
ULAE Unallocated Loss Adjustment Expenses
ULCC Ultra Large Crude Carrier
ULR Ultimate Loss Ratio
UMR Unique Market Reference
UNL Ultimate Net Loss
UPM Underwriting Performance Measures (XLLM)
UPTIA Underwriters Pay Tax if Applicable
USD US Dollar
USM Underwriting Syndicate Message
UWR Underwriter