Small interactive tools for cruising sailors — the kind of thing we kept wishing existed while sailing our Fusion 40 between New Zealand and Fiji, so we built them. Free to use, no sign-up, and they work on a phone at anchor. If one of them saves you a bad night, it's done its job.
Drag the wind speed and watch the sail plan change — which reef, what headsail, when the code 0 has to come down, and the warning signs you've already left it too late. Tick the conditions you're actually sailing in (night, short-handed, squalls about) and it moves you a reef earlier.
Try the reefing sliderAnchor scope, tankage and passage-planning tools are on the list. If there's a calculation you keep doing on the back of a chart, tell us and we'll look at building it — reader suggestions are how this section grows.
Suggest a toolEvery one of these comes out of four NZ–Fiji seasons aboard Mā Tori, our 2007 Fusion 40 — refitted 2022, current NZ Cat 1, and now looking for her next crew.
View Mā Tori for saleOccasional updates from the crew — passages, islands, new tools, and first word when Mā Tori finds her new owners.