About this tender
The Windy SR40 is the build we ask Windy for when a programme needs a credible offshore dayboat that can also stand in as a serious yacht tender - one that does not apologise for its size at the dock or its pace on passage. At 12.20 metres in inboard configuration and 13.05 metres with outboard power, it sits in a productive middle ground: large enough to carry a full deck of guests and a toy rack loaded with paddleboards and fliteboards, compact enough to be handled by a small crew.
Naval architecture comes from Espen Øino International, whose deep-V hull is a deliberate choice for offshore confidence rather than flat-water sprint numbers. The exterior and interior design brief was split cleanly: Øino's studio handled the lines, Design Unlimited and Windy's own team handled the cabin. The result is a layout that converts between open social platform and sheltered helm through sliding side doors and fold-down bulwarks - a practical feature set rather than a styling exercise.
Propulsion options range from twin Volvo Penta D6 inboards, through a triple Mercury V10-400 outboard package, to twin Mercury V12-600 outboards. Windy publishes 42 knots for the inboard variants and 52 knots for the outboard configuration, both subject to load and sea state. That spread gives captains and project managers a genuine specification choice depending on whether the priority is range (290 nautical miles on the inboard) or outright performance (52 knots and 180 nautical miles with the outboard stack).
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Highlights
The four details we'd point out first to a captain who hasn't seen one on the water yet.
The hull is a genuine deep-V design signed off by Espen Øino International, the same naval architecture practice behind a number of large private yacht projects. That lineage matters: the geometry is optimised for offshore sea states rather than marina display, and the 1.2-metre draft reflects a hull that is built to bite into a chop rather than skip across it.
Windy offers four distinct engine packages: twin Volvo Penta D6-480 or D6-440 DPI inboards delivering up to 42 knots and 290 nautical miles of range, or triple Mercury V10-400 and twin Mercury V12-600 outboard options pushing the top speed to 52 knots. The outboard route shortens range to 180 nautical miles but significantly raises the performance ceiling.
Sliding side doors and fold-down bulwarks mean the SR40 transitions from a protected helm to a fully open social platform without any structural reconfiguration. Below deck, the seating converts to a double berth, with optional forward or aft cabin configurations that extend overnight capacity to four.
Hardtop roof racks are a factory-specified feature, sized to carry stand-up paddleboards, fliteboards, fishing rods, and bicycles. For a yacht tender programme where the chase boat doubles as toy transport, this removes the need for a separate dinghy or deck cargo lashing arrangement.
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The full specification
Specifications, prices, availability, and performance figures are supplied for guidance only and remain subject to confirmation by the yard, seller, broker, survey, contract, and final specification.
Questions, answered
Last call · Available
Windy · Västervik, Sweden
Tell us about your yacht, your programme, and the missions SR40 needs to handle. We come back within 48 hours with a written assessment - fit for the brief, lead time, and trade-offs against alternatives in the same band.
Prefer to talk? +44 (0) 77180 88055 · other ways to reach us
From the library
