boatbuildlog

Design

Lion 550

Designed by Unik Yachts

Lion 550 Adrenaline is a light 5.5 m trailer sailer with a beam of 2.5 m, built from waterproof plywood sheathed in fibreglass. Unik Yachts designed it as one big three dimensional puzzle: around sixty parts, each locating in slots on its neighbours, so that the builder is assembling rather than measuring and the build time comes down sharply.

The designer's figures give a lifting keel drawing 0.25 m up and 1.5 m down, 250 kg of ballast, 22 square metres of sail and room for four. The company has followed builders through the process, posting in 2024 that another 550 started the previous October was in fitting out, and it describes the boat as one that can be finished in a home garage, with the children helping.

What building a Lion 550 actually takes

Medians from the build logs kept on this site, not the designer’s estimate. Nobody has logged this boat here yet, so they are empty until the first builder does.

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Build logs
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Launched
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Median hours
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Builds of this boat

Nobody has logged a Lion 550 here yet.

If you are building one, yours becomes the reference: the page the next person building this boat finds when they search for it. One photo and one line is a valid first entry.

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Boats like this one

Same type, closest in length.

Design Plans from LOA Logs
Hornolo Yannick Maignien 18′ 1″ (5.5 m) 1
PUCK 550 BCA Demco 5.5 m (18′ 1″) 0
SAM BCA Demco 5.5 m (18′ 1″) 0
Swaggie John Welsford 5.5 m (18′ 1″) 0
Snipa Capella no. 7 Båtritningar 5.49 m (18′ 0″) 0
Cruising Sloop Butler Projects 18′ 1″ (5.51 m) 0