Design No. 366
Sonas
Design 366 represents Alfred Mylne's work in auxiliary cutter design. Originally conceived as Sonas, this design exists within the Mylne archive as a complete set of 19 drawings. At least one yacht was realised from this design: Irina VII, built in 1935. The design documents remain available for study within the archive.
Original Drawings · 19 sheets
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Yachts in the Register · 1
Historical Context
Alfred Mylne was a Scottish yacht designer of considerable reputation, active throughout the early to mid-twentieth century. The auxiliary cutter emerged as a popular cruising type during this period, offering owners the practical advantages of sail combined with mechanical propulsion. Design 366 was created within this context of evolving cruising yacht requirements. The realisation of Irina VII in 1935 places this design within the inter-war period, a significant era for British yacht design and construction. The survival of 19 drawings demonstrates the archival practices maintained by Mylne's office, preserving technical specifications that might otherwise have been lost.