I have no real idea why it crashes, on my (low spec) laptop it crashes as soon as it loads, on my pc it works fine. Interesting that it only crashes for you when colliding. I think it may have to do with size, we also put source assets into the godot project and godot imported them all and bundles them on export, although they are never used. Maybe I'll push a version with the source assets not included anymore, at least on my laptop that fixes the crashes.
To be honest we only did an web export because we saw that many other games have one and that it should also be easy with our engine. So we just exported, but did no real tests, e.g. shooting is on ctrl, other ship sailing north is w, so if both actions are done at the same time the browser tab closes.
they got boarded on and fought a little battle before you lost HP.
That sounds like a pretty good idea. I think I'll include that!