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Tomcat self bailing issues

 
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Edward J



Joined: 26 Sep 2020
Posts: 3
City/Region: Poulsbo
State or Province: WA
C-Dory Year: 2008
C-Dory Model: 255 Tomcat
PostPosted: Thu May 26, 2022 10:15 pm    Post subject: Tomcat self bailing issues Reply with quote

Hello all, i'm a new c-brat and new owner of a 2008 tomcat. I've been looking at tomcat's for few years and the tomcat fits my needs very well: camping and fishing and able to trailer. After shrimping yesterday in Hood Canal i was washing down the cockpit and i was surprised how long it took for water to drain. So my question is I have five batteries in the aft compartment, three house and two starter batteries, if i move the house batteries inside the pilot house will it improve the self bailing and is there a down side to having batteries in the pilot house. Thank you all very much for any advice.
Ed Jonson
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ssobol



Joined: 27 Oct 2012
Posts: 2891
City/Region: SW Michigan
State or Province: MI
C-Dory Year: 2008
C-Dory Model: 22 Cruiser
Vessel Name: SoBELLE
Photos: SoBelle
PostPosted: Fri May 27, 2022 11:03 am    Post subject: Re: Tomcat self bailing issues Reply with quote

Edward J wrote:
... and is there a down side to having batteries in the pilot house. ...


Shouldn't have FLA batteries in the house due to hydrogen venting.
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thataway



Joined: 02 Nov 2003
Posts: 19824
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
PostPosted: Fri May 27, 2022 11:11 am    Post subject: Reply with quote

If you have AGM or Li batteries, they can be placed in the pilot house. I had 4 AGM batteries in the pilot house on the Tom Cat 255. (That was in 2007) Today I would go with LI batteries for house bank. (but see precautions in other Li battery threads.

Was the issue that the scuppers were close to being under water? You want the cockpit water to drain aft. Also the "fish boxes" in the floor will fill with water from a wash down. I am not aware of anyone who has the seals to prevent leaking.

Although the 255 is a "big boat" for 25 feet--it is weight sensitive.

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Bob Austin
Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
KA6PKB
Home port: Pensacola FL
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journey on



Joined: 03 Mar 2005
Posts: 3551
City/Region: Valley Centre
State or Province: CA
C-Dory Year: 2005
C-Dory Model: 25 Cruiser
Vessel Name: journey on
Photos: Journey On
PostPosted: Fri May 27, 2022 11:31 am    Post subject: Reply with quote

Journey On is a 25' CD. The cockpit drainage through the overboard drains is miserable, because the level of the cockpit floor is only inches above the waterline, hence no hydraulic head. In fact it we have over 2 people in the cockpit, the overboard drains are plugged so that water doesn't back drain. When we're in the water and I wash the cockpit, I ask Judy to set up front so that the drains drain.Sounds like the Tomcat has the same problems.

Also there are 2 hatches in the floor of the 25 CD. Water flowed freely through and around the seals giving a wet bilge. Dr. Bob found some hatches that would replace those and not leak. Installed 2 of them and now have a dry bilge. You could find hatches of the correct size and install them to keep the water out. Beats moving the batteries.

Boris
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smckean (Tosca)



Joined: 18 Jan 2014
Posts: 881
City/Region: Guemes Island (Anacortes)
State or Province: WA
C-Dory Year: 2005
C-Dory Model: 25 Cruiser
Vessel Name: Tosca
Photos: Tosca
PostPosted: Fri May 27, 2022 2:03 pm    Post subject: Reply with quote

Boris,

I am confused by your statement that: "I ask Judy to set up front so that the drains drain." Did you mean that you have her sit far in the stern?

My CD25 2 cockpit drains out the far aft corners of the cockpit. If I have weight forward, true there more head height, but the water in the cockpit never gets to the drains because it just pools forward at the cabin bulkhead.

BTW, my solution while not moving, but on the water, is to stand as far back in the splashwell as I can on one side then the other. If moving (the best situation), I put the boat not quite on plane which tilts the stern strongly down allowing the water to drain easily.

On the trailer, obviously I just park on a modest hill.

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Sandy McKean
Purchased Tosca in 2014
Re-powered to Yammi 200 in 2015
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journey on



Joined: 03 Mar 2005
Posts: 3551
City/Region: Valley Centre
State or Province: CA
C-Dory Year: 2005
C-Dory Model: 25 Cruiser
Vessel Name: journey on
Photos: Journey On
PostPosted: Fri May 27, 2022 3:00 pm    Post subject: Reply with quote

Actually, when the boat is in the water and I'm washing out the cockpit, the weight balance is such that the scuppers are at or slightly under water. I can't plug them, since I need the water to drain, so Judy moves forward whilst I get the cockpit clean and somewhat drained and then comes back to help finish the cockpit drain.

And if you think that's convoluted, you should follow my thought whilst I'm washing the boat.

Boris
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smckean (Tosca)



Joined: 18 Jan 2014
Posts: 881
City/Region: Guemes Island (Anacortes)
State or Province: WA
C-Dory Year: 2005
C-Dory Model: 25 Cruiser
Vessel Name: Tosca
Photos: Tosca
PostPosted: Fri May 27, 2022 7:07 pm    Post subject: Reply with quote

I see. Maybe my stern rides a little higher too. The bottom of the scuppers are maybe 1/2" above the water surface.
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ChapaRRal Cock



Joined: 22 May 2019
Posts: 28
City/Region: Port Orchard
State or Province: WA
C-Dory Year: 2009
C-Dory Model: 255 Tomcat
Vessel Name: Knotty Lady
Photos: Knotty Lady
PostPosted: Fri May 27, 2022 7:48 pm    Post subject: Reply with quote

I had the same problem, take a look at my album. It fixed my scupper problem
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James Speidel
Proud New Owner of the Knotty Lady
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Edward J



Joined: 26 Sep 2020
Posts: 3
City/Region: Poulsbo
State or Province: WA
C-Dory Year: 2008
C-Dory Model: 255 Tomcat
PostPosted: Sat May 28, 2022 7:44 pm    Post subject: Reply with quote

Thank you all for info. Knotty Lady the work you have done looks impressive. Thanks for pics.
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gulfcoast john



Joined: 14 Dec 2012
Posts: 873
City/Region: PENSACOLA
State or Province: FL
C-Dory Year: 2010
C-Dory Model: 255 Tomcat
Vessel Name: Cat O' Mine
Photos: CAT O' MINE
PostPosted: Sun May 29, 2022 9:18 am    Post subject: Reply with quote

Hi Ed,

The aft scuppers are barely above the waterline as mentioned. Each has a fairly stiff one-way rubber flapper valve to prevent waves or wakes from injecting seawater into the cockpit. The downside of this design is that cockpit washdown water can only ‘dribble’ out the flapper while it’s only an inch or so higher than sea level.



The most significant factor on scupper height above the waterline on our boat is the gas load. Twin full 75g tanks carry 900 pounds of gas. A full freshwater tank adds another 230 pounds. Group 31 batteries may avg 70 pounds each. Consider those factors if you haven’t already before moving battery positions, which may produce wiring challenges and detract from inside storage.

Hope this is helpful,

John

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John and Eileen Highsmith
2010 Tom Cat 255, Cat O' Mine
Yamaha F150, LXF150
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