Seacocks on a 1977 CD 28

[Green Horn]

Hi everyone,
So, a total newbie here with only 5 days of sailing experience and new owner of a 1977 Cape Dory 28 which is currently on the hard. When I bought the boat, my surveyor told me that all 6 seacocks were frozen. So, I've managed to unfreeze 4 of them. I can't find a diagram that tells me what seacock does what job, but on a CD28 if you are standing in the cockpit looking at the bow the one in the cockpit locker starboard side is frozen. Also, looking at the bow - under the vberth the one on the port side is frozen.
Can someone tell me what these 2 through hulls do - should I keep working on them or could they be put in the water open?

[JD-MDR]

https://marinehowto.com/servicing-taper ... -seacocks/. Read up on these . They are very simple to take apart and service. I just replaced three of mine that were badly damaged. I saw some handles at the consignment store for $35 . I threw all my old stuff away . I guess I wanted to let the yard guys have them for salvage. I didn't know the handles were worth so much. Two of mine looked really bad like the one in the photo. I have five total and some looked bad but after I did the lapping process they ended up like new.

[BernieA]

I also have a cd28 of the same vintage. The seacocks in the cockpit area, port and starboard lazarettes drain the cockpit and should be open, but exercised regularly so they can be closed in case the hoses leak.
The seacocks under the port v berth is the outflow from the head y valve, which remains closed and the y valve in position to send sewage to the holding tank. The y valve needs to be wired in that position per Coast Guard regulations.

[GeorgeH]

Dear Green,
I have a later model CD28 but don't think they differ much. The is an owner's manual that you can download on this site, http://www.capedory.org/cdsoalook-group ... inemanuals

Here is the layout for seacocks on my CD28 (looking from cockpit to bow).
2 seacocks in cockpit lockers (port and starboard) for emptying the cockpit. Should be left open.
2 seacocks in engine compartment. One for the sink and one for seawater cooling to engine. Seawater to engine seacock should be left open.
2 seacocks in head (port side). One for sea water to head. One for passing waste to surface waters (shouldn't be used unless in the open ocean and at least 3 miles from shore).
1 seacock under sink across from head (starboard side). Should be closed when not using sink.

George

[Neil Gordon]

Maybe size will help you here. On my 1977 CD28...

Under the sink, the smaller seacock drains the sink. The larger one is for the cockpit scupper.
Under the stove, the small one is the raw water intake. The large one is for the cockpit scupper.
Up forward the small one is the head intake. The large one is the overboard head discharge.

I leave my cockpit seacocks open and everything else closed when I'm not at the boat. The raw water intake is open as long as the engine key is in the ignition. The sink and head seacocks are closed except when in actual use.

[House]

Hello Green Horn,

Keep working on those seacocks. In my view, you need a way to "close the gate" and shut off the water from being able to come in the boat in case a hose clamp comes loose and/or the hose attached to the seacock goes bad. I've owned owned Miss Evelean for 10 years now and just this summer got around to servicing the cockpit ones. They were stuck solid; although the scupper hoses never leaked, they were beginning to crack and show signs of dry rot. I decided I did not want to take the chance on them holding together "one more time."

Good luck,

Richard

[Kickin Bears]

https://marinehowto.com/servicing-taper ... -seacocks/. Read up on these . They are very simple to take apart and service. I just replaced three of mine that were badly damaged. I saw some handles at the consignment store for $35 . I threw all my old stuff away . I guess I wanted to let the yard guys have them for salvage. I didn't know the handles were worth so much. Two of mine looked really bad like the one in the photo. I have five total and some looked bad but after I did the lapping process they ended up like new.

Great thread! Really appreciate that link too; I plan on servicing at least three this winter while she’s on the hard, and that link will come in handy.

Question regarding the service kit from Spartan for $70. How many seacocks will that get me through?

I assume more than one but you really can’t assume that these days ..

[JD-MDR]

https://marinehowto.com/servicing-taper ... -seacocks/. Read up on these . They are very simple to take apart and service. I just replaced three of mine that were badly damaged. I saw some handles at the consignment store for $35 . I threw all my old stuff away . I guess I wanted to let the yard guys have them for salvage. I didn't know the handles were worth so much. Two of mine looked really bad like the one in the photo. I have five total and some looked bad but after I did the lapping process they ended up like new.

Great thread! Really appreciate that link too; I plan on servicing at least three this winter while she’s on the hard, and that link will come in handy.

Question regarding the service kit from Spartan for $70. How many seacocks will that get me through?

I assume more than one but you really can’t assume that these days ..

Many. I think it will last the rest of your life

[Green Horn]

Guys, thanks so much for the great info. I was able to unfreeze both of the seacocks...it was pretty easy other than having to hang upside down in a cockpit locker to get to one of them. I have the Spartan service kit and there is enough there to last you forever.
It sounds like one of my through hulls was moved at some point...i don't have one under my stove but I have 2 under my sink.
Anyway, she goes into the water on Friday.