The model looks very nice and is nice illustrative tool however the apparent wind angle swings in the wrong direction as you accelerate.

Just started sailing, brilliant training aid Thankyou! Idea for another version? Link it to phone's live compass & realtime online wind data, so I can practice setting the sail while I walk around my garden 😊

Nice app. Would benefit from wind speed / boat speed gage to better understand results of tweeking trim as regards to performance. An explanation of graphics in detail mode would also help.

Its great. Simple and informative simulation. I would love to be able to drop the foresail so i can see just the main on action.

Good app, easy to use. Would be nice to be able to add/remove sail/rig types. Also sometimes the wind direction control can block or intefere with the sail controls.

First things first, it's not a game! It's a model. Excellent teaching tool and visualisation aid. A few development suggestions (you asked!) 1. The power reading disappears off screen on a run, 2. Do you reckon you could work-in Sailing-by-the-lee? 3. Selection of different foresails - or even two at once! 4. Variable wind strength for light winds.

A good tool for sail and wind visualization. Missing an explanation for the different arrows, forces and units displayed.

Really simple clean interface with no ads. Extremely useful for a new sailor learning how to trim sails!

Good start! Improvements could include the effects of stalling the sails. The interactions of the sails is not modeled. The jib does not get blanketed by the main when on a broad reach coming into a run.

Interesting little app. Just getting back into sailing, this gives me an idea what I should be doing.

The mechanics of the main sail is a bit strange. It would be better having a separate outhaul control and not an X-Y fastening point. Or use the X-Y point to adjust both outhaul and boom angle. Sails should have bulgyness feature and not be a simple sheet. Maybe implemented with some kind of initial shape and resistance to bending along the profile would work? The model creates negative force on the boat even when sail has no tension as jib sheet released and can not transfer forces.

Very nice to be able to see the effect of fine adjustments to sail settings. I am using it to learn how to sail close hauled. The principles are similar, but I have a ketch. Would it be possible to add a mizzen as a switchable option?

Jib sheet lead can be moved BUT can't be set to opposite side of center (hove to). An option to turn the sheet lead placement mirroring off would be awesome. By stressing the program it can be glitched to hove to, but when you start playing with the sheet it resets to mirrored :-(. Now just needs outhaul. This will make it an awesome training aid. Tutorial should open the first time the app loads. A small banner ad at the bottom would not be obtrusive, and would get you some of what you deserve. Also, another boat in close proximity, I'd understand if the second boat didn't have controls, but how awesome would that be!

Simulation is nice although it could be more detailed with speeds as well. What disturbs me is that 90 degrees of wind from the back aren't possible and instead the 90 degrees of the the dead zone are possible...

Ide like to know what the wind is doing, what the wind arrows mean. Are the sails filling up and my speeding increasing or decreasing. Its not much fun if I dont know what's happening.

As a player of Sea Of Theives, this is quite a fun little app... Wish it displayed speed of both wind and boat, and latural push with different lengths of keel fin, that would be awesome!... I appreciate that there are no adverts and the creator is ok with this... I would love to see this type of app comprise a little fun by having a rudder, so you could do some 'tacking' into the wind and see your course!... This app has a lot of potential, both in fun and as a teaching aid. I'm enjoying it :)