I have a2002 power quest vyper fresh water works for the sink an toilet no water out of shower fist time using it is there a valve need to turn on cold and hot values are open still no water.

1) Today's not Saturday, boy!
2) How big is boat, they have a regular shower INSIDE the cabin? not just freshwater shower off back of boat for rinsing off? Nice well, if it worked.

does the shower head have a seperate valve?

Has a shower in the cabin when I turn on the hot or cold water I can hear a sound as if there is water at the valve but when I open the shower head no water comes out I unscrewed the part with the holes no screen i'am going remove the paper holder and see if can see we're the hose attaches too

Hose had two screens one at both end also hose was leaking at valve assy