pan water
I have a 1994 320. Although there is no drain from the little pan directly under the engine, there is a good chance that that much water should have splashed into the bilge under the packing gland area. It should have drained towards the bow. Run a small fish tape, coat hanger or something from the bilge drain forward into the cabin bilge to clear any blockage. Check for water underneath the galley, as well as the port and starboard lockers where the battery and waste holding tank is located. On my model, water coming in from outside of the cabin bilge does not flow into it, but runs around either side. It's along story how I found this out and it may not apply to your boat.......still worth a look. Remove the front engine cover and run the engine to look for leaks. I agree that the water pump or a hose clamp may have come loose. Good luck.