C. William Lapworth is a naval architect.
| Boat type | Design Year | Category |
|---|---|---|
| Cal 2-24 | 1969 | Sailboat |
| Cal 2-25 | 1977 | Sailboat |
| Cal 2-27 | 1974 | Sailboat |
| Cal 2-30 | 1968 | Sailboat |
| Cal 2-34 | 1975 | Sailboat |
| Cal 21 | 1968 | Sailboat |
| Cal 25 | 1965 | Sailboat |
| Cal 3-27 | 1983 | Sailboat |
| Cal 30 | 1961 | Sailboat |
| Cal 34 | 1967 | Sailboat |
| Cal 34 III | 1977 | Sailboat |
| Cal 35 Cruise | 1973 | Sailboat |
| Cal 35 Cruise Ketch | 1973 | Sailboat |
| Cal 36 | 1965 | Sailboat |
| Cal 39 Mk III | 1983 | Sailboat |
| Cal 46 MS | 1968 | Sailboat |
| Crown 23 | 1969 | Sailboat |
| Crown 28 | 1976 | Sailboat |
| Endeavor 26 | 1963 | Sailboat |
| Gladiator 24 | 1963 | Sailboat |
| Gloucester 16 | 1967 | Sailboat |
| Islander 44 | 1966 | Sailboat |
| Lapworth 24 | 1962 | Sailboat |
| Lapworth 32 | 1960 | Sailboat |
| Lapworth 36 | 1953 | Sailboat |
| Lapworth 39 | 1959 | Sailboat |
| Lapworth 48 | 1970 | Sailboat |
| Lapworth 50 | 1962 | Sailboat |
| Martinique 25 | 1979 | Sailboat |
| Metcalf | 1965 | Dinghy |
| Neptune 16 | 1981 | Sailboat |
| Newport 16 | 1965 | Sailboat |
| Phoenix 12 | 1983 | Dinghy |