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Catalina 250 Specific Forum

Considering 95 250 WB purchase, 2 screws?

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doublereefed
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Initially Posted - 04/30/2016 : 15:10:42

Folks, I'm looking at a 95 250 WB. What are these 2 screws on the cabin floor? It seems they go straight into the ballast tank.

Can anyone confirm these are standard issue as manufactured?

Thanks,

-Richard

'95 C250 WB #61
Midway, UT

doublereefed
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Response Posted - 04/30/2016 : 15:12:18

Oops. Can't figure out how to upload photos on mobile. The 2 screws are right to the aft of the swing keel trunk that the lazarette table is on. Does that make sense?

'95 C250 WB #61
Midway, UT

zeil
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Response Posted - 04/30/2016 : 19:09:48

Curious about the screws... we use shutterfly for all images

Henk & Johanna
"Floating", a few off your "barnacles".
"Someday Lady" '95 C250WB #151 ('03 - 2016)
"Sea ya" 30ft Bayliner (04-2018 - 09-2018)
"Mariah" '96 C250WB #191 (05-2019 - 15-05-2023)
"Lady J" '00 C250WK #499 (05-2021 - 09-2022)

doublereefed
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Response Posted - 04/30/2016 : 19:19:58

Here are the photos...

'95 C250 WB #61
Midway, UT

zeil
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Response Posted - 04/30/2016 : 20:24:59

As far as we can tell (the boat is not home) our '95 C250 WB does not have similar screws

The screws as per your photo are located directly above the center board trunk, outside the ballast tank area.

It could be that the screws are used to mount the center up-haul block located inside the trunk. (see attached factory provided blueprint with detail)

Edited by - zeil on 05/01/2016 08:28:25

doublereefed
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Response Posted - 05/01/2016 : 08:33:04

That has to be it. Thank you for clarifying this, and for those drawings.

My mind now wanders to wondering, with is the exact shape of the ballast tank? Are there any drawings out there that show details such as cross sections, etc.?

Thanks you!

-Richard

'95 C250 WB #61
Midway, UT

zeil
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Response Posted - 05/01/2016 : 09:30:48

We are not aware of ballast tank drawings although they may exist.

The outline of the b-tank is clearly visible for inspection in most but not all areas.

View the b-tank through the cabin port and starboard coamings, forward below the V berth, aft into the bilge area and below the galley counter. Hidden areas are below the head, floor and part of the counter.

Edited by - zeil on 05/01/2016 12:37:39

mdidomenico
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Response Posted - 05/01/2016 : 11:25:39

they are in fact for the sheave for the centerboard. my '95 250 WB also has them as well.

it seems at some point catalina changed the design from through bolts to nuts/plates embedded in the fiberglass.

i having the yard replace that sheave/screws this week. i suspect mine are the source of a persistent leak between the cabin floor and the ballast tank.

mdidomenico
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Response Posted - 05/01/2016 : 11:26:50

any photos you have of that vessel whether you buy it or not, i'd be curious to see. i've not seen too many photos of my/our specific series and i have some questions about what was where as i'm missing some pieces.

zeil
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Response Posted - 05/01/2016 : 12:39:29

What specifically are you interested in?

quote:
i having the yard replace that sheave/screws this week. i suspect mine are the source of a persistent leak between the cabin floor and the ballast tank.

Since the screws or for that matter the fiber-glassed in place mounting plate is inside the trunk, water would not be able to enter between tank and floor. Could water enter in another location?

Edited by - zeil on 05/01/2016 17:09:07

Russ.Johnson
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Response Posted - 05/01/2016 : 22:21:53

quote:
Originally posted by doublereefed

That has to be it. Thank you for clarifying this, and for those drawings.

My mind now wanders to wondering, with is the exact shape of the ballast tank? Are there any drawings out there that show details such as cross sections, etc.?

Thanks you!

-Richard

Richard,
I have a 2005 Water-Ballast, so the design might have changed.
Open the bilge assess, aft of the stairs. You can use a mirror and flashlight.
On my boat there is a 1-inch gap between cabin floor and the top of the ballast tank.
You can also crawl around the forward berth and under the cabin seats to see the gap.
In the forward berth, there in also two thru-hulls for the depth finder and knot-meter.
You can get an idea the size of the ballast tank.

I have carpet, so I don't remember the screws. There could be a spacer between the cabin floor and the ballast tank and the screws go though the spacer.

Russ

Russ Johnson
2005 C250WB Hull 793

mdidomenico
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Response Posted - 05/02/2016 : 09:46:08

quote:
Originally posted by zeil
What specifically are you interested in?

anything really, there don't seem to be very many models of this era in the hands of association members. so whenever i ask for help on something, mine seems to be just a tad different then everyone else. i still get great help from everyone though.

the biggest question i've not been able to answer so far is what the table looked like for inside the cabin, how it attaches to the compression post and how it turns into a v-berth expansion.

mine didn't come with the table from the previous owner, and the table legs that fit into the v-berth hatch which forms the cockpit table are also missing, but i think those are just some bent stainless tube.

quote:
Originally posted by zeil
Since the screws or for that matter the fiber-glassed in place mounting plate is inside the trunk, water would not be able to enter between tank and floor. Could water enter in another location?

i'm not sure if the screws are actually fiberglassed in place. its clear that the centerboard trunk extends up to meet the floor in that location and the bolts go through the floor to hold the sheave in place. but whats not clear is whether there is a space (albeit very minuet) between the floor and the centerboard trunk

in later models i believe catalina corrected this by sealing the screws holes and fiberglassing in a steel plate in the centerboard trunk that the sheave bolts to. but i believe that was done after mine was built.

every year my boat is in the water, i get water in two places. one is through the plexi hatch, which i finally figured out is actually water dripping down the gutter and around the corner to inside the boat. there's a space in the corner between the plexi and the crib board that it's sneaking in through.

the other is between the floor and the ballast tank. when i vacuum out the water underneath the galley sink, it refills on a non-raining day. it does not fill when i'm up on the hard over the winter. last summer i had standing water under there. i can only assume it's coming in through a leak somewhere under the floor.

doublereefed
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Response Posted - 05/02/2016 : 10:40:42

Dear all, and particularly mdidomenico,

Thanks for the help over the weekend. I was trying to make a purchase decision and the info was 100% helpful. (I bought it, woohoo!).

mdidomenico, I have that same leak, and it was why I was pinging this list. It looked to my inexperienced eye like PO had maybe done some installations and penetrated the ballast tank. Not so... I have that exact same seeping that you mention. After seeing the diagrams I am convinced that seepage is coming through the pulley/plate/bolt assembly in the trunk. The pulley fits up against the trunk, it looks like there is a plate glassed in the top of the trunk, and then the bolts thread down and grab that whole assembly. I'm not going to worry about it until I need to. I'll need a new bottom job next spring and will take a look when the yard has it up on stands.

Thanks,

-Richard

'95 C250 WB #61
Midway, UT

zeil
Master Marine Consultant

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1297 Posts

Response Posted - 05/02/2016 : 21:20:37

quote:
anything really, there don't seem to be very many models of this era in the hands of association members. so whenever i ask for help on something, mine seems to be just a tad different then everyone else. i still get great help from everyone though.

Going by the hull numbers and forum subscribers of boats built during 1995 starting with hull number # 8 and the highest hull number #187 about 200 boats were completed and sold in 1995.

Of these about 50 fifty C250 1995 owners participate to some degree on this forum. (source: boat search results)... you may therefore anticipate answers, ideas, suggestions and opinions to most of your questions.

zeil
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Response Posted - 05/02/2016 : 21:51:10

quote:
the biggest question i've not been able to answer so far is what the table looked like for inside the cabin, how it attaches to the compression post and how it turns into a v-berth expansion.

mine didn't come with the table from the previous owner, and the table legs that fit into the v-berth hatch which forms the cockpit table are also missing, but i think those are just some bent stainless tube.

The original table that only a few owners use or have used was considered too big. The "bent stainless tubes" are used below the same large table to place it in a table position. Interestingly the same table top also fits for storage, below the lid, into the V berth opening.

You'll notice that the cockpit is equipped with similar holding/mounting blocks for the same "bent stainless tubes" enabling you to mount the same table in your cockpit.

Since most, if not all, considered the table top too big most people fabricated their own or simply used the smaller table top as part of the centerboard trunk.

Custom table top with extension and slide outs... lots of people have designed and fabricated a wonderful range of table tops

bent stainless tubes with standard mounting blocks as provided by Catalina

bent stainless tubes with floor mounting blocks shown

Edited by - zeil on 05/02/2016 21:54:59

zeil
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Response Posted - 05/02/2016 : 22:02:55

quote:
he other is between the floor and the ballast tank. when i vacuum out the water underneath the galley sink, it refills on a non-raining day. it does not fill when i'm up on the hard over the winter. last summer i had standing water under there. i can only assume it's coming in through a leak somewhere under the floor.

Are you on salt or fresh water??...
Is the tank filled with fresh or salt water??
No, as far as you can detect, tank/hull cracks anywhere??

mdidomenico
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Response Posted - 05/03/2016 : 09:30:29

quote:

bent stainless tubes with standard mounting blocks as provided by Catalina

are the blocks mounted to the floor or just the stainless tubes? mine doesn't have them.

i don't have a picture handy to post at the moment, but i don't have any blocks around the settee area that would accept stainless tubing. i only have little starboard tabs screwed in around the foot well, that i presume support the crib boards (or table top) that would make the v-berth longer (which i do have the cushions for, but no supporting structure)

mdidomenico
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Response Posted - 05/03/2016 : 09:36:05

quote:
Originally posted by zeil

quote:
he other is between the floor and the ballast tank. when i vacuum out the water underneath the galley sink, it refills on a non-raining day. it does not fill when i'm up on the hard over the winter. last summer i had standing water under there. i can only assume it's coming in through a leak somewhere under the floor.

Are you on salt or fresh water??...
Is the tank filled with fresh or salt water??
No, as far as you can detect, tank/hull cracks anywhere??

I sit in salt water and fill the tank with salt water. before you ask, i did taste the water, but it didn't taste salty, which i found surprising (but that might have just been me).

there aren't any cracks that i can readily see. ie under the bunks, vberth, or near the air vents. there's also no tell-tale dirt trails along any of the walls

i'm going back in the water in a week. now that i figured out where the leak from the hatch is (which ruined my teak panel beside the head), i can focus again on where the underfloor water is coming from.

zeil
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Response Posted - 05/03/2016 : 11:08:44

Look for a faulty line from the water tank, seeping hose connection, etc.

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