Boat Sail Save Fix

Fixes a vanilla Sailwind bug that drops custom sails from owned boats left in the world when you sail on another vessel (anchored, moored, or at port).

Affects boats with modular parts and multiple mast configurations (often reported on the sanbuq).

The bug

On save (manual save, autosave, sleep), SaveableBoatCustomization.GetData() only serializes sails on masts where gameObject.activeInHierarchy is true. Inactive masts can still hold sails in memory. The save file then stores an empty or incomplete sail list. After reload, those boats spawn without sails.

Leaving and returning in the same session without saving does not trigger this code path; the problem appears after autosave (default: every 15 minutes) and the next load.

What this mod does

1. On save — also writes sails from inactive masts (same data the game should have saved).
2. On load — keeps an in-session cache per boat sceneIndex. If a save file already has zero sails, restores the last known good rig from cache (safety net only).

Install

1. Install BepInEx for Sailwind.
2. Extract this folder into BepInEx/plugins/.
3. Launch the game. Check BepInEx/LogOutput.log for: Boat Sail Save Fix 1.0.0 loaded.

Already corrupted saves

This mod prevents new data loss. It does not edit save files on disk. For a save that already has no sails stored, either:

• Load once after restoring sails with a save editor / patch tool, then play with this mod enabled, or
• Load a backup from before the bug occurred.

After one successful load with sails present, the session cache can cover empty entries until you fix the file.

Compatibility

• BepInEx 5.4+
• Tested on game versions 0.38
• No config file required

Uninstall

Delete the BoatSailSaveFix folder from BepInEx/plugins/.

Building from source

From the repository root:

dotnet build -c Release -p:SailwindDir="C:/Program Files (x86)/Steam/steamapps/common/Sailwind"

Copy bin/Release/netstandard2.0/BoatSailSaveFix.dll into BepInEx/plugins/BoatSailSaveFix/.

Thunderstore

1. Ensure icon.png (256×256) is at the repository root.
2. .\build-thunderstore.ps1
3. Upload g1llez-BoatSailSaveFix-1.0.0.zip on Thunderstore (community: Sailwind).

Links

• Source: github.com/g1llez/sailwind-boatsailsavefix

License

MIT — fix upstream in Sailwind is welcome; this mod can be retired when the vanilla bug is patched.