Hi Rodney,

On my boat, it’s 1-1/2” .  It’s so close coupled; that, you will have to remove one of the thru hulls to replace it.  I put silicone RTV sealant on the hose barbs in addition to the hose clamps.

Roger Pihlaja
S/V Dynamic Equilibrium

Sent from my iPhone

> On Feb 7, 2022, at 3:34 PM, RODNEY BROWN <rnelson204 at gmail.com> wrote:
> 
> Happy Monday!  Looking for some advice, the flexible tubing connecting the deck drain (running downward in the lazarette) seems to have given up the ghost and is leaking water into the lazarette.  Does anyone know what size tubing is needed to replace the old section?
> 
> Thanks,
> Rodney