Mount Desert Yacht Yard began as a yacht storage and repair business, but became a design and building yard, particularly during the late 1940s and 1950s, as E. Farnham Butler and his associates, Ted Earl and Cy Hamlin, developed a line of light displacement, reverse sheer cruising boats from 22 to 36 feet. These include the Amphibicon, Amphibi-ette, Controversy 26, 27, 30, and 36.
| Name | LOA (ft) | First Built | Last Built | Rig |
|---|---|---|---|---|
| AMPHIBI-CON | 25.42 | 1954 | — | Fractional Sloop |
| AMPHIBI-ETTE | 24 | 1960 | — | Fractional Sloop |
| CONTROVERSY 26 | 25.92 | 1954 | — | Masthead Sloop |
| CONTROVERSY 27 | 27.5 | 1960 | — | Masthead Sloop |
| CONTROVERSY 30 | 31.17 | 1960 | — | Masthead Sloop |
| CONTROVERSY 31 | 31 | 1960 | — | Masthead Sloop |
| CONTROVERSY 36 | 37.25 | 1960 | — | Masthead Yawl |
| HUSTLER 18 (MASSACHUSETTS BAY) | 18 | 1924 | — | Cat (Marconi) |
| MERMAID CLASS | 23 | 1947 | 1963 | Fractional Sloop |