Isla

ex Fly Away, Tresta

Built 1948Auxiliary CutterBute Slip Dock

Isla, originally named Fly Away and later Tresta, is a wooden auxiliary cutter built in 1948 by Bute Slip Dock to design 414 (Trondra) by A. Mylne & Co. The vessel measures 22.5 feet on the waterline with a beam of 8.1 feet and a draft of 5.4 feet, carrying 367 square feet of sail. She remains in existence, representing a mid-twentieth-century example of Mylne's practical cruising cutter designs.

Ownership

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Crew

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Specification

LOA (spar)8.2 m · 27 ft
LWL6.9 m · 23 ft
Beam2.5 m · 8 ft
Draft1.6 m · 5 ft
Depth1.4 m · 5 ft
Sail area367 sq ft
Gross tonnage6.12
Net tonnage4.91
TM tonnage6

Details

Built1948
BuilderBute Slip Dock, Bute
ConstructionWood
SailmakersGreenock S&T '48
Port of registryGlasgow
Current locationHolland

Registry & Identity

Sail number148C
LR numberY117301
Official no.185044

Design Archive

Archive drawing — Trondra
Lines Plan

Design No. 414

Trondra

Designed 1948

Auxiliary Cutter

View in design archive

Sister Yachts

3 other vessels built to the same design.

Historical Context

Design 414, the Trondra, was created by A. Mylne & Co. in 1948, a period when the office was transitioning from pre-war designs to new models suited to post-war conditions and budgets. The 1940s saw increased demand for modest, seaworthy cruising vessels among amateur sailors returning to the sport after wartime disruption. The Trondra class represents Mylne's continuing philosophy of combining seaworthiness, practical cruising accommodation, and affordable construction. The auxiliary cutter rig—with its ability to sail efficiently on multiple points or motor when necessary—was well-suited to the coastal work and amateur cruising that defined the post-war period. Bute Slip Dock's construction of Isla reflects the importance of Bute as a boatbuilding centre during this era, working alongside other Clyde-based builders and designers to supply Scotland's growing leisure sailing fleet.

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