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-   -   343 Cobalt Outboard Open Bow Conversion (https://www.offshoreonly.com/forums/cobalt/379448-343-cobalt-outboard-open-bow-conversion.html)

DMS_ATX 03-14-2024 08:50 PM

always considered this hull a contender for outboards. nice work. mine has 525s and b1xrs, good for mid 70s. a little less weight and you will likely see 76. what are you doing with the cabin door? does that open to the bow? or are you having to walk around the cockpit via the gunwales?

Maritime_Eng 06-03-2024 11:01 AM

https://cimg4.ibsrv.net/gimg/www.off...a7aeeed2cb.jpg
https://cimg6.ibsrv.net/gimg/www.off...dd5358bf8e.jpg
https://cimg9.ibsrv.net/gimg/www.off...0ebb8707b3.jpg
https://cimg1.ibsrv.net/gimg/www.off...ce29c8e8b6.jpg
Just an update on this project. The boat is completely stripped and heading to paint this week!

Maritime_Eng 06-03-2024 11:02 AM

Here is the concept for the boat paint and graphics. Clean and Simple. All the stainless will be painted black to give it a more modern look, like a nor-tech or midnight.
https://cimg0.ibsrv.net/gimg/www.off...12fa04afe9.jpg

Maritime_Eng 07-11-2024 08:23 AM

Sanding/ Bodywork almost complete and ready for paint. We decided to change the design up a bit...... Here is the new concept.
https://cimg9.ibsrv.net/gimg/www.off...2c48c1f272.jpg

DMS_ATX 07-15-2024 01:51 PM

Looking good! solid progress for your original completion date of October.

Redesign is neat, i'm slightly more partial to the render you posted in june, but the black hull will be sweet! What's teh plan for the bright work? Powder coat or paint the stainless? Kick ass that you are doing all this work youself.

If you have photos of the inside of the cabin i'd love to see it. Keeping the head was a good idea.

Love seeing the hull with out the motors and general "former" engine are pictures. Gives everyone a good idea how well these models were constructed.

Maritime_Eng 07-30-2024 11:01 AM

Primer and Final Sanding, I had to leave this to the professionals as I don't have a place to paint something of this size. By Mid August it should be in paint!


https://cimg7.ibsrv.net/gimg/www.off...d6a36bfdb.jpeg
https://cimg9.ibsrv.net/gimg/www.off...670ee8c5f.jpeg

Maritime_Eng 07-30-2024 11:07 AM

The graphics will be done in vinyl so it can be changed anytime. The stainless will be painted in epoxy so if it ever gets scratched/ nicked I will be able to repair it. Currently the cabin is unfinished and probably will be when we first put the boat in the water, that will be a work in progress.


Originally Posted by DMS_ATX (Post 4902942)
Looking good! solid progress for your original completion date of October.

Redesign is neat, i'm slightly more partial to the render you posted in june, but the black hull will be sweet! What's teh plan for the bright work? Powder coat or paint the stainless? Kick ass that you are doing all this work youself.

If you have photos of the inside of the cabin i'd love to see it. Keeping the head was a good idea.

Love seeing the hull with out the motors and general "former" engine are pictures. Gives everyone a good idea how well these models were constructed.


Maritime_Eng 10-05-2024 06:41 PM

https://cimg6.ibsrv.net/gimg/www.off...a1ba9efa62.jpg
https://cimg7.ibsrv.net/gimg/www.off...f645b08031.jpg
https://cimg8.ibsrv.net/gimg/www.off...1e7cbb8d8f.jpg
https://cimg0.ibsrv.net/gimg/www.off...c2fed0ecd8.jpg
https://cimg1.ibsrv.net/gimg/www.off...8286bd8a30.jpg
https://cimg2.ibsrv.net/gimg/www.off...5d5117fa55.jpg

Maritime_Eng 10-05-2024 06:43 PM

Picked up the boat from paint, so excited!!! Next stop Blue Marlin Design for Interior!!!!

bulletbob 10-08-2024 07:52 AM

Looks great Dan! I look forward to the interior pics.

boomer 10-24-2024 12:19 PM

Whats the plan for the back half was the orginal swim platform a bolt on to the transom why the big cutouts in the sides. Just very curious I would like I said before I would love to do this to a 282 Cobalt.

Maritime_Eng 10-25-2024 09:33 AM


Originally Posted by boomer (Post 4912455)
Whats the plan for the back half was the orginal swim platform a bolt on to the transom why the big cutouts in the sides. Just very curious I would like I said before I would love to do this to a 282 Cobalt.


The Swim platform was a bolt on section. The large holes in the side are a result of cutting out the rear seat and engine hatch area. If you look in other pictures I made Mockup Starboard covers for each side. This concept will be used when we create the new side panels that will be covered in vinyl and have cup holders, speakers, access to batteries and battery switches, ect.

Maritime_Eng 10-28-2024 06:18 AM

Progress pictures from this weekend. Now it actually looks like a boat again!

https://cimg9.ibsrv.net/gimg/www.off...04cac29c6e.jpg
https://cimg0.ibsrv.net/gimg/www.off...9a2e5cbf2b.jpg
https://cimg1.ibsrv.net/gimg/www.off...17dedab11b.jpg

Twin O/B Sonic 10-28-2024 06:35 AM

GORGEOUS!

Congrats!

Quinlan 12-31-2024 06:43 AM

Getting any progress on this ?

Maritime_Eng 12-31-2024 11:16 AM


Originally Posted by Quinlan (Post 4917134)
Getting any progress on this ?

https://cimg3.ibsrv.net/gimg/www.off...0a2713c756.jpg
https://cimg4.ibsrv.net/gimg/www.off...adaa9c6817.jpg
https://cimg5.ibsrv.net/gimg/www.off...f5e2ff669e.jpg
I wish I had more news on this build. Here is how it sits now. Hard top is at paint, and the boat is waiting for the interior shop. They were backed up about 2 months. Hopefully in the next week ot two I will be able to deliver it to them.

Quinlan 01-03-2025 07:46 AM

That white looks Really Good

Just winterized mine:mad:
https://cimg7.ibsrv.net/gimg/www.off...bf1e2fbc29.jpg

Maritime_Eng 02-17-2025 08:47 AM

Finally Dropped the boat off for Interior! Here are a few pictures.
https://cimg8.ibsrv.net/gimg/www.off...dd33a0f58f.jpg
https://cimg5.ibsrv.net/gimg/www.off...c3d1f00d70.jpg
https://cimg6.ibsrv.net/gimg/www.off...de9380f2a3.jpg
https://cimg7.ibsrv.net/gimg/www.off...297e4a1fdd.jpg

Quinlan 07-09-2025 05:35 AM

Splash this puppy yet?

Maritime_Eng 07-09-2025 06:11 AM

https://cimg9.ibsrv.net/gimg/www.off...6010bafbea.jpg
https://cimg1.ibsrv.net/gimg/www.off...c160a2b4cb.jpg
https://cimg3.ibsrv.net/gimg/www.off...2c39cb0ba1.jpg

Originally Posted by Quinlan (Post 4929954)
Splash this puppy yet?

I wish! There is a long delay at the Interior shop. They scheduled too many jobs at one time and had a few people leave the company. They finally started working on this right before the 4th of July. The dash is complete, the side panels show the colors/ stitching, and the side panels are next. I have been told it should be done by Mid August.

Maritime_Eng 11-14-2025 06:27 AM

Finally,
https://cimg0.ibsrv.net/gimg/www.off...8006d38f74.jpg
https://cimg1.ibsrv.net/gimg/www.off...0974f1fda4.jpg
https://cimg2.ibsrv.net/gimg/www.off...766e8e5cc6.jpg
https://cimg3.ibsrv.net/gimg/www.off...89c8d900dd.jpg
https://cimg4.ibsrv.net/gimg/www.off...013c8b4caf.jpg
Progress! Should be completed by early December!

Maritime_Eng 11-15-2025 04:58 PM

Today's pictures
https://cimg8.ibsrv.net/gimg/www.off...efd2243e8d.jpg
https://cimg9.ibsrv.net/gimg/www.off...40593c72a3.jpg
https://cimg1.ibsrv.net/gimg/www.off...31e816c859.jpg
https://cimg3.ibsrv.net/gimg/www.off...b990b0159d.jpg
https://cimg4.ibsrv.net/gimg/www.off...1f5bc401f5.jpg

Quinlan 11-17-2025 04:07 PM

Looking Great! Wonder if anyone has done a bow thruster on one of these things?
I am getting my sides touched up and recleared so I would like to avoid any new dock rash.

DMS_ATX 11-18-2025 01:30 PM

Cool, coming along! i like the idea for the rear combing pads with speakers.

Maritime_Eng 02-05-2026 11:20 AM

So Close now! Well worth the wait!
https://cimg6.ibsrv.net/gimg/www.off...e091a56712.jpg
https://cimg7.ibsrv.net/gimg/www.off...2273cc7ddc.jpg
https://cimg8.ibsrv.net/gimg/www.off...d87d65b27c.jpg
https://cimg9.ibsrv.net/gimg/www.off...e10662e169.jpg
https://cimg0.ibsrv.net/gimg/www.off...8dc324d661.jpg
https://cimg1.ibsrv.net/gimg/www.off...e80ca2fb18.jpg
https://cimg2.ibsrv.net/gimg/www.off...5d92172dfd.jpg

pasquesi 02-05-2026 11:25 AM

Holy cow man. That looks spectacular. Congratulations!!.

Quinlan 02-16-2026 05:03 AM

Wow

Maritime_Eng 03-29-2026 09:37 AM

Finally Back, and ready for rigging!
https://cimg0.ibsrv.net/gimg/www.off...748d9c1227.jpg
https://cimg1.ibsrv.net/gimg/www.off...ac29622f3c.jpg
https://cimg4.ibsrv.net/gimg/www.off...0070307b8b.jpg
https://cimg7.ibsrv.net/gimg/www.off...632259e1ac.jpg

Maritime_Eng 03-29-2026 09:43 AM

https://cimg7.ibsrv.net/gimg/www.off...bd480c9523.jpg
https://cimg8.ibsrv.net/gimg/www.off...9445632843.jpg
https://cimg9.ibsrv.net/gimg/www.off...7bbbe5367a.jpg
https://cimg0.ibsrv.net/gimg/www.off...39f9dd6cf7.jpg
https://cimg1.ibsrv.net/gimg/www.off...b81c3232ce.jpg
https://cimg2.ibsrv.net/gimg/www.off...5de7d81ea6.jpg
Home at last

pasquesi 03-29-2026 10:42 AM

Absolutely perfect!! Congratulations!!

Quinlan 03-29-2026 02:46 PM

Interior is Amazing. I may borrow the pattern when I redo mine :ernaehrung004:

Holy Smokes 03-30-2026 05:14 PM

Awesome conversions!

Is Cobalt aware of this? When I mentioned to Cobalt years ago about an outboard version of the 343, the rep just smiled, winked and said the molds were still there and intact.

Maritime_Eng 03-30-2026 07:14 PM


Originally Posted by Holy Smokes (Post 4945280)
Awesome conversions!

Is Cobalt aware of this? When I mentioned to Cobalt years ago about an outboard version of the 343, the rep just smiled, winked and said the molds were still there and intact.

Thank you, I'm sure they will hear about it in a couple months when it hits the water. Now, it seems like they are doing well with the new line-up of models, not sure where something like this would fit.

Maritime_Eng 03-30-2026 07:17 PM

https://cimg1.ibsrv.net/gimg/www.off...3e33b4761a.jpg
https://cimg3.ibsrv.net/gimg/www.off...fe9d210c4f.jpg
T-Top mounted

pasquesi 03-31-2026 08:24 AM

Killer!!

Quinlan 04-10-2026 02:50 PM

How deep did you go? We are needing to get a return fuel line to tank and having a hard time getting to it. Any clues?

Maritime_Eng 04-10-2026 09:38 PM


Originally Posted by Quinlan (Post 4945785)
How deep did you go? We are needing to get a return fuel line to tank and having a hard time getting to it. Any clues?

I am very familiar with the inter working of the fuel system. Text or call at 239-699-0716. Glad to help another cobalt boater.

SB 04-11-2026 07:19 AM


Originally Posted by Quinlan (Post 4945785)
How deep did you go? We are needing to get a return fuel line to tank and having a hard time getting to it. Any clues?

If getting to the fuel fill hose is easier, these are a good option:
https://www.cpperformance.com/c-500-...s-returns.aspx

Maritime_Eng 04-12-2026 07:28 AM

There are 2 vent lines for the fuel tank, you could use one as a return.
https://cimg6.ibsrv.net/gimg/www.off...9f4fee5527.jpg

Maritime_Eng 04-12-2026 10:35 AM

Dash mock up
https://cimg7.ibsrv.net/gimg/www.off...2621f2ca9d.jpg


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