Low water pressure at Transom Shower head

[Samos381]

I have very low fresh water pressure coming from the rear showerhead on the swim platform of my 2001 Beneteau Oceanis 381. Only getting a trickle of water. There is a hot a cold valve coupler tied into before the shower hose. Turn the valve and getting same light pressure. Water pressure at all other faucets is fine. I removed the sprayer and only getting a trickle out of the open shower hose. Any ideas on how to get higher water pressure from that hose?

 

[smokey73]

Does your hose get stored in a place where you have to stuff it down into some sort of holder? Maybe you have a kink in the hose between the water supply pipes and the shower head?

 

[jssailem]

Does your shower head have a screw or aerator? They could be blocked.
Mud dabbers come to mind.

 

[JoeWhite]

Turn off water pump. Disconnect hot and cold water hose from the sprayers and temporarily turn on the water pressure. Is there a good water flow? If yes, reconnect the hoses. Disconnect the spray hose from faucet and turn on the water.
As noted above, you may have clogged screen.