I agree, with a dry bilge
to wake up the dead when the bilge pump activates is good. I take care of several friend's boats, and a small fleet to take out Vets with PTSD, and found most people can't handle an alarm or buzzer activating for 5 seconds every thirty minutes for packing gland
drippings. A nice little ding would probably work. I recently installed several alarms that activate after two minutes of continuous pump operation that came from AQUALARM in San Diego
. One already let us know when a fairly new float switch stuck on. I am an alarm nut after investigating lots of marine
casualties over a 42 year period. Simple inexpensive alarms could have saved many lives or lots of discomfort.