I have two 12V J
ohnson AquaJet 5.2 pumps. One in the lazarette that's freshwater and piped to the cockpit and the bow, the other is in the bow and serves as saltwater washdown. I use quick-connects so I can switch the hose between seawater or freshwater on the bow, another quick connect is in the cockpit and has a hose attached and hanging. That hose is used daily - dogs!
The pumps are a perfect match for the purpose, good pressure, adequate volume. In 10 yrs no problems. With 12V they're ready any time. No need to go to 120V, plenty of pressure. Use them to wash down the boat away from shore. They're about equal to most shore side hose connections for pressure & volume.