Horn on a boat?

Can a boat use a horn? I can't seem to make any default horns work on a boat.

I tried doing this a while ago and had the same problem. I couldn't seem to get any of the default horn sounds to fire. Try moving closer to land. See if that helps. Some of the light's I've created don't work when you are too far from the coast of an island.

could try making a weapon that does no damage but the sound is the horn if all else fails :)