We are new boat
owners this season, and learning
some of the quirks of our '82 Catalina
27. Ever so often (every few minutes), we hear a quiet sound coming from under our v-berth. It sounds of some kind of small motor
. Or pump
. It makes a very quiet whirring noise
like an electronic servo. It seems to run even on aux battery
, when all other power is off.
At first we thought it might be the bilge pump
doing its thing, but quickly realized that's a different sound (definitely works -- and triggers less often). This sound is loudest toward the front of the cabin
and low. Opening the bilge
cover makes it a little louder but confirms it's not that pump
. Opening the v-berth panels
confirm it's coming from that area, where our holding tank
We haven't used our toilet except once since we put in, but we have flushed some freshwater through to test out the jabco, and it worked fine. Obviously, our head-use seacocks remain closed most of the time (we are inland-coastal based, so just freshwater to pump in to flush). Any idea what it could be? Macerator? Pump? Help! Thanks.