| C/S | Year | C/S | Year | C/S | Year | |||||||||||
| U. 1023 | QDLK | 1945-1948 | ULSTER | GGDM | 1956 | UNST | BGLF | 1945-1948 | ||||||||
| U. 249 | QDLP | 1945-1948 | ULSTER | GGDM | 1961 | UNSWERVING | BKDB | 1945-1948 | ||||||||
| U. 776 | QDL | 1945-1948 | ULSTER | GGDM | 1964 | UNTIRING | MPJS | 1956 | ||||||||
| U.S. PT 213 | MWJQ | 1945-1948 | ULSTER | BDCT | 1945-1948 | UPAS | BKFK | 1945-1948 | ||||||||
| U.S. PT 217 | MWJV | 1945-1948 | ULSTER COAST | MLDY | 1945-1948 | UPHOLDER | GGWN | 1945-1948 | ||||||||
| U.S. PT 218 | MWJW | 1945-1948 | ULSTER MONARCH | BCCP | 1945-1948 | UPLIFTER | MSSW | 1956 | ||||||||
| U.S. PT. 201 | MRTT | 1945-1948 | ULSTER QUEEN | GMWX | 1945-1948 | UPNOR | GVHF | 1910 | ||||||||
| U.S. PT. 202 | MRTV | 1945-1948 | ULTIMATUM | GQFQ | 1945-1948 | UPNOR | GTKS | 1928 | ||||||||
| U.S. PT. 204 | MRTX | 1945-1948 | ULTOR | BKCQ | 1945-1948 | UPNOR | GXFC | 1939 | ||||||||
| U.S. PT. 207 | MRVB | 1945-1948 | ULVA | BJVQ | 1945-1948 | UPRIGHT | GGWK | 1945-1948 | ||||||||
| U.S. PT. 208 | MRVC | 1945-1948 | ULYSSES | GGDN | 1956 | UPROAR | GPYC | 1945-1948 | ||||||||
| U.S. PT. 209 | MRVD | 1945-1948 | ULYSSES | GGDN | 1961 | UPSHOT | BKDX | 1945-1948 | ||||||||
| U.S. PT. 211 | MRVG | 1945-1948 | ULYSSES | GGDN | 1964 | UPSTART | GPJR | 1956 | ||||||||
| U.S.P.T. 302 | BKGQ | 1945-1948 | ULYSSES | BDCV | 1945-1948 | UPSTART | BKDD | 1945-1948 | ||||||||
| U.S.P.T. 303 | BKGR | 1945-1948 | UMBRA | GQFR | 1945-1948 | UPTON | GTWW | 1956 | ||||||||
| U.S.P.T. 304 | BKGS | 1945-1948 | UMBRIEL | GPRC | 1945-1948 | UPTON | GTQQ | 1961 | ||||||||
| U.S.P.T. 305 | BKGT | 1945-1948 | UMPIRE | GTKM | 1928 | UPTON | GTWW | 1964 | ||||||||
| U.S.P.T. 306 | BKGV | 1945-1948 | UNA | GGWW | 1945-1948 | UPWARD | QCLN | 1945-1948 | ||||||||
| U.S.P.T. 307 | BKGW | 1945-1948 | UNBEATEN | GGWP | 1945-1948 | URANIA | GGDS | 1956 | ||||||||
| U.S.P.T. 308 | BKGX | 1945-1948 | UNBENDING | GQFT | 1945-1948 | URANIA | GGDS | 1961 | ||||||||
| U.S.P.T. 309 | BKGY | 1945-1948 | UNBRIDLE | QCLM | 1945-1948 | URANIA | GGDS | 1964 | ||||||||
| U.S.P.T. 310 | BKGZ | 1945-1948 | UNDAUNTED | GGWR | 1956 | URANIA | BDCX | 1945-1948 | ||||||||
| U.S.P.T. 311 | BKJB | 1945-1948 | UNDAUNTED | GGWR | 1961 | URANIA (I.S.) | BTVS | 1945-1948 | ||||||||
| U.S.P.T. 312 | BKJC | 1945-1948 | UNDAUNTED | GGWR | 1964 | URANO (I.S.) | QFMS | 1945-1948 | ||||||||
| U.S.P.T. 313 | BKJD | 1945-1948 | UNDAUNTED | GGWR | 1945-1948 | URCHIN | GTKV | 1928 | ||||||||
| U.S.P.T. 552 | BKJF | 1945-1948 | UNDINE | GVFR | 1910 | URCHIN | GGWS | 1956 | ||||||||
| U.S.P.T. 553 | BKJG | 1945-1948 | UNDINE | GTKR | 1928 | URCHIN | GGWS | 1961 | ||||||||
| U.S.P.T. 554 | BKJJ | 1945-1948 | UNDINE | GGDL | 1939 | URCHIN | GGWS | 1964 | ||||||||
| U.S.P.T. 555 | BKJK | 1945-1948 | UNDINE | GGDP | 1956 | URCHIN | GGWS | 1945-1948 | ||||||||
| U.S.P.T. 556 | BKJL | 1945-1948 | UNDINE | GGDP | 1961 | URE | GVFT | 1910 | ||||||||
| U.S.P.T. 557 | BKJM | 1945-1948 | UNDINE | GGDP | 1964 | URGE | GGWQ | 1945-1948 | ||||||||
| U.S.P.T. 558 | BKJN | 1945-1948 | UNDINE | BDCW | 1945-1948 | URSA | GGNL | 1956 | ||||||||
| U.S.P.T. 559 | BKJP | 1945-1948 | UNICORN | GBMM | 1956 | URSA | GGNL | 1961 | ||||||||
| U.S.P.T. 560 | BKJQ | 1945-1948 | UNICORN | GBMM | 1945-1948 | URSA | GGNL | 1964 | ||||||||
| U.S.P.T. 561 | BKJR | 1945-1948 | UNIQUE | GGWL | 1945-1948 | URSA | BJVX | 1945-1948 | ||||||||
| U.S.P.T. 562 | BKJS | 1945-1948 | UNITED | BKCF | 1945-1948 | URSULA | GTLB | 1928 | ||||||||
| U.S.P.T. 563 | BKJT | 1945-1948 | UNITED BOYS | GYDV | 1945-1948 | URSULA | GGDN | 1939 | ||||||||
| UCA DEGLI ABRUZZI (I.S.) | MZGS | 1945-1948 | UNITY | GGDM | 1939 | URTICA | BKDY | 1945-1948 | ||||||||
| UGANDA | GCLZ | 1945-1948 | UNIVERSAL | BKCV | 1945-1948 | USK | GVHC | 1910 | ||||||||
| UGIE BRAY | GKBT | 1945-1948 | UNRIVALLED | BKCG | 1945-1948 | USK | MWFT | 1945-1948 | ||||||||
| UIVER | GTPT | 1945-1948 | UNRUFFLED | BKCJ | 1945-1948 | UTHER | BKCZ | 1945-1948 | ||||||||
| ULA | BKDF | 1945-1948 | UNRULY | BSBR | 1945-1948 | UTILISE | GKBY | 1945-1948 | ||||||||
| ULAC ALI REIS | BJLJ | 1945-1948 | UNSEEN | BKCN | 1945-1948 | UTOPIA | BKFM | 1945-1948 | ||||||||
| ULEX | BKFL | 1945-1948 | UNSHAKEN | BKCR | 1945-1948 | UTSIRA | BKFB | 1945-1948 | ||||||||
| ULSTER | GTKL | 1928 | UNSPARING | BKCS | 1945-1948 | UTVAER | GQWX | 1945-1948 |