Bubble recommended Johnston pumps to me so thats the brand I bought . still to fit it . Its on the list to fit
JOHNSON PUMP 5.2 AQUA JET WASH DOWN 12V
Whisper quiet operation
Five-chamber construction
Self-priming
Easy, low cost maintenance
Quick-connect hose or threaded connectors available
Inline strainer and trigger nozzle included as standard
Long service life
Capacity:20 l/min - 5.2 GPM
Pressure Cut Off: 5 bar - 70 psi
Fuse Size: 20 A
Connection:1/2" NPT / hose 3/4" , GHT 3/4" ; 3/8" BSP x 1/2" barb,
Motor: WD 5.2 - 185 W, 12/24V DC
Body: PA/PPA
Valves: Nitrile
Diaphragm: Santoprene
I am also thinking of a couple of these style fittings on deck forward and aft
http://www.newfoundmetals.com/deck-wash-down/deckwashdown