Check the anti-siphon valve & overflow
My Bavaria has a similar symptom. In my case, the water is coming from the overflow tube connected to the anti-siphon valve in the raw water (cooling) circuit on the engine. This valve (on my boat) is located just after the raw water pump, on the bulkhead in the engine "room". A drip can occur when the valve gets contaminated with salt (it dries, and forms a crust preventing the seal from working correctly). If this is your problem, you need to clean out that valve, so that it seats correctly.Good luck....Ken