| | KUNLABORI | 1935 | 1937 |
| | KUNLABORI | 1948 | 1948 |
| | KUO FU | 1943 | 1965 |
| | KUPARI | 1979 | 1985 |
| | KURNIA | 1964 | 1970 |
| | KURT | 1905 | 1922 |
| | KURT H | 1963 | 1969 |
| | KURT HARTWIG SIEMERS | 1918 | 1922 |
| | KURZESEE | 1919 | 1931 |
| | KUSSFELD | 1910 | 1944 |
| | KUSTVAART | 1918 | 1923 |
| | KUWI | 1929 | 1934 |
| | KUWI | 1939 | 1939 |
| | KVALVAAG | 1934 | 1985 |
| | KVIKSHOLM | 1965 | 1976 |
| | KWA RIVER | 1957 | 1967 |
| | KWAN ON MARU NO 11 | 1874 | 1896 |
| | KWAN-ON MARU NO 20 | 1886 | 1897 |
| | KWIEK | 1918 | 1919 |
| | KWIEK | 1926 | 1926 |
| | KWINTEBANK | 1976 | 1984 |
| | KWINTEBANK | 2002 | 2002 |
| | KYKNOS | 1967 | 1990 |
| | KYKNOS I | 1977 | 1995 |
| | KYLIX | 1955 | 1955 |
| | KYMA | 1920 | 1920 |
| | KYNDIK | 1955 | 1971 |
| | KYODO MARU | 1914 | 1924 |