dock side water ???

[Rick.johnson]

Hi Guys I have a 1987 Hunter Legend 40 FT
An with a 100 gal frount fresh water tank an two heads

are an were they set up with the needed valves to turn off the line from the water tank an flip it to be set for dock side water ??

if not i have some tubing to cut an valves to put in

Please Advise Thanks Rick

 

[Ralph Johnstone]

an flip it to be set for dock side water ??

If by "dock side water" you are referring to using dock side water to pressurize your boat's water distribution system. Bad idea.
I mean REALLLLLLLY bad idea.

​

Need I say more ?

 

[smokey73]

IF you are going to do this you MUST have pressure regulator to reduce the shore water pressure to a much lower pressure that you boatside piping can safely handle. Even then, if an interior pipe fails you could flood the boat. If it were me and I had to have this, I'd have a shutoff valve AND shut off the shore water supply whenever I was off the boat. When a pipe fails in your house, you have a mess but you don't sink your house.

 

[Don S/V ILLusion]

Pro/con arguments aside, virtually every boat, both power and sail, at our marina (excluding the small ones) has a dock water connection.
In answer to the question, check out the diagrams on the internet such as below paying attention to the pressure reducer one-way valve (at the point of connection to the boat) and water shutoff on shore when the boat is unattended.

You should not need a valve to select between shore water and tank water if done properly.

 

[Rick.johnson]

So it better to flush out tank an fill up the 100 gal holding tank
an flip on the small pump to fill the lines to the valves an pressurize the water
when needed ???

 

[Rick.johnson]

That I like an will get the pressure reducer

an set a valve with a flag on it to by the boats dock stairs so to shut
off water supply when i leave it

 

[smokey73]

Only you can decide what is "better." If you are living on the boat then a shore hookup is nice but it comes with risks, which may be acceptable to you.
As far as filling the fresh water tanks and turning on the pump only when needed, that is fine. You can even leave the pump on providing you have no known leaks since the most water you can introduce into the boat is 100 gal and it will end up in the bilge, plus your boat is already floating with the 100 gal in the tank so it isn't really introducing water into the boat, just changing its location. I always turn off the fresh water pump AND close all my thru hull valve when I leave the boat.