Our boat came with a very nice kitchen, and a Belfast sink. All very nice, but it was draining at a extremely slow pace. After checking for blocks etc. we discovered that the fall between the outlet of the sink, and the outlet from the boat, there was next to no vertical drop.
So the solution would be to either move the Belfast sink up, or install a punp.
I went for the last option, and as I wanted this running off the boats 12V system (we have 230V mains as well – but for lots of reasons I did not consider this a good solution). And that led us to the Whale Gulper pump.
Reading up on marine pumps it comes very highly recommended – so we ordered one, and today was the day to install it.
All very simple, and when I connected it to 12V it immediately drained the sink! Success.
Now I just need to find a suitable switch for it – but that’s for the next visit to the boat.