On my 30 MK I (hull #79, 1972), the galley sink drain Ys into the starboard cockpit drain, but upstream from the seacock (which is actually a gate valve - bad, I know). The Y is high enough that I don’t think it’s below waterline.
I’ll want to redo the drain someday because the seal from the sink to the pipe drips a bit. But given how little I use the galley sink - mostly to catch empty beer cans thrown below from the cockpit - it’s not an urgent high priority project for me. Cheers, Randy Stafford SV Grenadine C&C 30 MK I #79 Ken Caryl, CO > On Feb 8, 2024, at 3:38 PM, Alexander Netherton via CnC-List > <cnc-list@cnc-list.com> wrote: > > Hello All > I have a C&C 30 Mk 1, a fine old boat that has a history of different owners. > Recently, we had a very cold snap with temperatures hitting the – 12to – 16 > range. A good stress test for the boat’s plumbing for sure. To make a long > story short, I need to know how the galley sink drainage ought to be > configured on this boat. You can read more for detail, or simply respond. > All information will be appreciated. > > …. In the aftermath of the cold snap, I found that there was some seepage > from the galley sink. And there I found an odd configuration. The 1.5-inch > drain was stepped down to a 1-inch diameter hose that ran into the drainage > for the cockpit. There a Y fitting was screwed into the seacock (a 1.5-inch > diameter) that allowed the 1-inch drainage from the sink to drain into that > seacock. The lip onto which the 1-inch sink drain line attached itself was > pitifully short—about 1 inch, and below the water line. Not very safe and a > configuration that can not fully drain the sink. > > > > The upshot is that I have to change the galley sink drainage system. The C&C > 30 Mk 1 owners manual gives no details on this—but it does show that the > cockpit and galley sink drainage are separate systems. The local chandlery > folk advise me to install a new drainage thru-hull (with a gate valve) > between the bottom of the sink and the waterline, to ensure that it drains > properly. But this is a wide margin leaving me without a precise idea of > where to put the thru-hull. And I am not sure whether I need an elbow under > the sink--or how that ought to be configured. > > > > Can anyone tell me how the gally sink drainage was handled by C&C at the > outset. Are there any specs or design principles that I could use to help me > pinpoint these positions or design the new system? > > Your help will be appreciated. > > > > Best, Alex Netherton > > Dulcibella, Nanaimo BC > > > Please show your appreciation for this list and the Photo Album site and help > me pay the associated bills. Make a contribution at: > https://www.paypal.me/stumurray > Thanks for your help. > Stu
Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
