Part 2 - Columbia 29 refit, in the Rocky Mountains

[406Columbia]

Originally Posted by newhaul

not on this boat but I had considered doing that with the cockpit drain on the islander being as how there is an outboard in a well on it and on yours . Just a short pvc pipe out the back into the lazzerette .

That would be awesome. I will take a look tomorrow and see what that would look like and if its a reality. I would love to eliminate a thru-hull.

[newhaul]

Originally Posted by 406Columbia

That would be awesome. I will take a look tomorrow and see what that would look like and if its a reality. I would love to eliminate a thru-hull.

You only have a single cockpit drain?
My 29 has 2 in proper cross setup.

[406Columbia]

Originally Posted by newhaul

You only have a single cockpit drain?
My 29 has 2 in proper cross setup.

No, I have two drains in the cockpit but only one actual thru-hull to evacuate the water from the boat. Not two thru-hulls like yours. Why do they cross?

[newhaul]

Originally Posted by 406Columbia

No, I have two drains in the cockpit but only one actual thru-hull to evacuate the water from the boat. Not two thru-hulls like yours. Why do they cross?

they cross so water won't backup into the cockpit when on a tack
Also so it will drain faster for the same reason

[Don C L]

Well I haven't been keeping up... G10 is good, yes better than a wood choice IMO. The correct way to run the cockpit drains below the waterline is what Rob showed in his, though I confess I still have the original single thru-hull myself! I too have considered running drains out the aft end above the waterline for more major water egress if needed, but haven't gotten to really looking at it seriously yet.

[newhaul]

Originally Posted by Don C L

Well I haven't been keeping up... G10 is good, yes better than a wood choice IMO. The correct way to run the cockpit drains below the waterline is what Rob showed in his, though I confess I still have the original single thru-hull myself! I too have considered running drains out the aft end above the waterline for more major water egress if needed, but haven't gotten to really looking at it seriously yet.

recall my defender was semi custom from the factory when Dan and Pat ordered it they asked for a few customizations to beef her for circumnavigation . I am benefiting greatly now . Personally I feel that any boat that goes offshore needs to be able to drain the cockpit in under a minute from full swamp.

[406Columbia]

Sounds good. We have decided to add another thru-hull to drain faster in the current position. While it's certainly possible to move the drains above the waterline it's only above it by an inch and a half on our boat. Its also in the engine area behind the companionway. Of course, we have the outboard in the lazarette so its easier for us but still way out of the way.

We will cross the two drains when we get the second thru-hull sorted.

Got lots of grinding and sanding done today as well as installing the new shore power plug, smart plug I think. Watched a cool bird with my son catch a fish and fly to the top of a shipping container in the yard and enjoy a little lunch.

Also did a fair bit of standard cleaning and such as in this period of construction/refit it seems to get filthy quick.

[406Columbia]

Originally Posted by newhaul

recall my defender was semi custom from the factory when Dan and Pat ordered it they asked for a few customizations to beef her for circumnavigation . I am benefiting greatly now . Personally I feel that any boat that goes offshore needs to be able to drain the cockpit in under a minute from full swamp.

Under a minute is a good idea. I found an online table saying with two 1'' drains we should be able to emply the volume of water our cockpit holds in well under a minute. We are assuming our cockpit holds maybe 65 gallons of water.

The table said 1'' pvc pipe should allow 58 gallons of water through 12' in one minute. So hoping the marine hose has a similar flow rate, two of them should be very good. If anyone has any other information chime in, please.

We ordered a second series 93 Forepar Marelon thru-hull, so each side will be identical. I really like how robust they feel and the testing we watched on them, the little plug built into the handle is handy too.

Appreciate the input guys, we will certainly be crossing the hose to aid in draining during a tack. If anyone sees me doing anything else that can be improved upon or is just plain wrong let me know. I like learning how to do this old girl better.

[Don C L]

Well, you can always keep a bucket handy! There's no better bilge pump than a desperate man with a bucket!

65gal x 8lbs = 520lbs so it's like 2 big guys just climbed aboard if you get pooped, not too bad

That bird, was it an osprey? We had one hanging out around us a month or so ago. I took it as a badge of honor it chose my boat for a roost.

The 200 ft of chain will fit in the bow? That's a fair bit of weight so far forward. You might think of checking how to stow that under the cabin sole just forward of the little bulkhead under there at least for a time you are making a longer passage, I think there is enough room. I have been considering it myself. It puts the weight where it belongs. Or maybe half of it and shackle it when needed and have a 100' and nylon combo ready to go. Even 60' and nylon combo is what I have and it serves me well where I am, but I can avoid rocky bottoms and we have no coral reefs around here. Even if you could run the chain back from the chain locker through to the hatch under the v-berth, perhaps that could work too. Anyway just thinking, In general it helps to keep all the weight centralized as I am sure you know already.

[Orion Jim]

Originally Posted by 406Columbia

Under a minute is a good idea. I found an online table saying with two 1'' drains we should be able to emply the volume of water our cockpit holds in well under a minute. We are assuming our cockpit holds maybe 65 gallons of water.

The table said 1'' pvc pipe should allow 58 gallons of water through 12' in one minute. So hoping the marine hose has a similar flow rate, two of them should be very good. If anyone has any other information chime in, please.

This table indicates that the flow rate through 1” pipe at normal gravity will be 16 gallons per minute. This seems accurate in my experience.
Also, my cockpit drains (2) are both 1 1/2”. I would never rely on anything smaller though it is my experience that, in a pooping situation, the rough seas and the motion of the boat has a tendency to throw out a good portion of the water before it has a chance to drain.....which is the dubious plus side of a large sea state.

[newhaul]

Originally Posted by 406Columbia

Under a minute is a good idea. I found an online table saying with two 1'' drains we should be able to emply the volume of water our cockpit holds in well under a minute. We are assuming our cockpit holds maybe 65 gallons of water.

The table said 1'' pvc pipe should allow 58 gallons of water through 12' in one minute. So hoping the marine hose has a similar flow rate, two of them should be very good. If anyone has any other information chime in, please.

We ordered a second series 93 Forepar Marelon thru-hull, so each side will be identical. I really like how robust they feel and the testing we watched on them, the little plug built into the handle is handy too.

Appreciate the input guys, we will certainly be crossing the hose to aid in draining during a tack. If anyone sees me doing anything else that can be improved upon or is just plain wrong let me know. I like learning how to do this old girl better.

one of the many upgrades done for the Stephfen Ulysses (prior the SV Don't Panic.)
is that the deck drains are 2 inch .

[john61ct]

What would be gravity other than normal?

[Orion Jim]

Originally Posted by john61ct

What would be gravity other than normal?

The included chart also has flow rates for water under pressure...not to be confused with gravity driven flow rates. But I'm just being polite, you knew that. Give it a try.....

[406Columbia]

Originally Posted by Don C L

Well, you can always keep a bucket handy! There's no better bilge pump than a desperate man with a bucket!

65gal x 8lbs = 520lbs so it's like 2 big guys just climbed aboard if you get pooped, not too bad

That bird, was it an osprey? We had one hanging out around us a month or so ago. I took it as a badge of honor it chose my boat for a roost.

The 200 ft of chain will fit in the bow? That's a fair bit of weight so far forward. You might think of checking how to stow that under the cabin sole just forward of the little bulkhead under there at least for a time you are making a longer passage, I think there is enough room. I have been considering it myself. It puts the weight where it belongs. Or maybe half of it and shackle it when needed and have a 100' and nylon combo ready to go. Even 60' and nylon combo is what I have and it serves me well where I am, but I can avoid rocky bottoms and we have no coral reefs around here. Even if you could run the chain back from the chain locker through to the hatch under the v-berth, perhaps that could work too. Anyway just thinking, In general it helps to keep all the weight centralized as I am sure you know already.

I will post a picture of the bird, for some reason we were thinking it was a crane of some sort. Anyway, will post the picture. regarding the 200' of chain, it easily fits in the chain locker with room to spare. The chain locker on this boat is bigger than the Beneteau Oceanis 370 we considered buying.

On the weight distribution, we think that's good advice, might try to counterbalance with more fuel or water storage below the cockpit in the same way NewHaul has his set up. Either way for long passage stowing it differently makes sense to us. Don't want to hobby horse

[406Columbia]

pictures from yesterday.