Short answer: The Lagoon 380's large full-batten mainsail and broad multihull load case make track condition, reefing and actual rig configuration essential parts of the sail purchase. Use published data to check plausibility, never to approve final sail dimensions.
Published model reference values
| Published LOA | 11.55 m |
|---|---|
| Published beam | 6.53 m |
| Published upwind sail area | 77 m² |
| Published main / genoa | 47–48 m² / 30–31 m² |
Rig changes, furlers, mast rake, hardware, class updates and previous owner work can change the usable luff, foot, clew and sail controls. The sailmaker should reconcile the actual boat, existing sails and current rules.
Define the replacement sail's job
Lagoon's published figures show how much of the upwind plan sits in the mainsail. On a cruising catamaran, that sail's battens, luff cars, reefing and loaded-drop behaviour are a complete operating system. The working genoa or jib must then be mapped against any gennaker, Code sail or other reacher so the owner is not buying overlapping area without a safe handling plan.
What the sailmaker needs to verify
Identify the exact Lagoon 380 series, mast, boom, mainsail head and batten arrangement, track and cars, reef lines, traveller, forestay furler and any forward tack hardware. Published references show ranges for mainsail, genoa and spinnaker or gennaker areas, reflecting configurations rather than one guaranteed cut. Multihull loads and bowsprit systems require professional confirmation.
- Exact series, mast and existing sail configuration
- Mainsail head, battens, track and car working load
- Reef positions, line leads and loaded drop test
- Forestay furler and genoa lead geometry
- Forward tack point, furler and bowsprit loads
- UV, chafe and remote-repair requirements
Worked buyer scenario
Hypothetical owner: a liveaboard crew wants dependable coastal passages rather than maximum sail area. They service the luff cars, specify reef depths and reef-line access around the real crew, retain a robust working genoa and ask for a clear apparent-wind crossover to the gennaker. UV cover, chafe at spreaders and onboard repair materials are included in the brief.
Questions to put in the quote brief
- Which actual-boat measurements will you take or require the owner to take?
- What exact cloth, weight, construction and reinforcement are proposed?
- What full-size and reduced wind range is the sail designed to cover?
- Which hardware, covers, freight, fitting and commissioning are included?
- How are fit adjustments, recuts, repairs and warranty handled in Australia?
Sources and verification
Published values above were checked against these references. Confirm current rules and manufacturer information before relying on them.