Nuova Rade shower head, supplied with 3m long hose.
This is commonly used by boat manufacturers including Quicksilver, Beneteau, Jeanneau etc..
The head has a 1/2" BSP thread for connecting it to the hose. The hose connection (to the pump) has a 3/8" BSP female thread.
The handle allows for adjustable water flow.
DIMENSIONS
Height of the shower head (measured top to far end of thread, excluding hanger): 96mm
Diameter of shower head: 30mm
Shower head thread: 1/2" BSP male
Shower hose thread: 1/2" BSP female / 3/8" BSP female
All dimensions +/- 2mm