Inputs
Crew, shape priority, maintenance tolerance and existing hardware reveal whether simplicity, cockpit control, roach or continuous reduction dominates.
Handling systems
Mainsail reefing-system selector
The tool organises trade-offs. A rigger and sailmaker must confirm compatibility, loads and safe operation.
Worked example
Example: short-handed offshore cruiser
A well-maintained slab system with low-friction cars and clearly led reefs may provide the strongest balance of shape, redundancy and field repairability.
Tool guide
How to use and interpret this tool
It organises the trade-offs between slab, single-line, in-mast and in-boom reduction systems.
Decision logic
The tool matches operating priorities to characteristic system strengths and flags compatibility and maintenance questions.
Read the result
The result is a shortlist. A rigger and sailmaker must verify mast, boom, loads, luff geometry and recovery procedures before changing systems.
Worked example
A short-handed offshore cruiser that values repairability may favour slab reefing with low-friction cars and clearly led reef lines over a more complex conversion.
Common mistakes to avoid
- Selecting a sail without inspecting the track and boom system
- Assuming cockpit control eliminates friction or failure modes
- Failing to practise recovery from a jam
Professional verification
This tool supports briefing and comparison. It does not replace measurement on the boat, structural engineering, class or safety rules, or a sailmaker's final design.
Continue the decision