pump, deck wash 2088-534-244 Shurflo Blaster 45 psi, 3.5 gpm, use for spare shower also mounted
The above pump has served for years. I sometimes wish for a bigger unit but nothing short of a fire hose would really satisfy me. Just be patient. And, no such luck, this pump is not powerful enough to keep up with chain retrieval: which would be nice.
I use regular below deck hose (probably ½ inch/12mm) going to a deck fitting and regular garden hose for the on-deck portion. Find a good nozzle that can do a fine stream: many are not up to a fine stream.
Ensure only a 3% or better voltage drop. The engine will be running but pumps are responsive to v.
You might consider a salt water spray at the galley sink linked to the same system/pump. These can save lots of fresh water when in nice clean anchorages.
A wash down hose where all chain is scrupulously clean before entering the chain locker is an important addition to a boat. Add the new generation anchors and the seabed that comes up with it and a potent stream of water becomes almost essential.
I am also clear that chain and anchor stored clean will last a lot longer.
Come back with questions/comments/etc.
My best, Dick Stevenson, s/v Alchemy