Hatches by mast

[Ben Sutton]

I have a 1990 34+. I am planning to replace the small hatches on the cabin top.
They appear similar to Lewmar Ocean hatch 20. I will inspect them to see if they have a flange on the inside, as this is an option.

Does anyone have experience with these hatches. Can you confirm the model?
Thanks
Ben Sutton
Evangeline hull#15

[Eric Baumes]

So, I did the replacement on my 1993 +. 

Looking through my order history for a certain retailer, it looks like I ordered lewmar size 10 and they were pretty much a drop in replacement. 

Hardest part was getting the old hatch out without damaging the gelcoat and getting all the old sealant/adhesive off.

Before ordering, definitely measure at least 2x.

Eric

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[David Knecht]

I haven’t replaced but i did rebed mine last winter. I used a wire strung between two dowels to start freeing it then started pounding wooden wedges in on all sides and also a stiff paint scraper with a wide blade. They all came out with no damage to deck. Dave

Sent from my iPhone

On Aug 14, 2025, at 3:19 PM, Eric Baumes <eric....@gmail.com> wrote:



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[Ben Sutton]

I saw something about size 10. But as far as I can tell those are square. Mine are rectangular. I wonder is your year has a different deck mold?

On Aug 14, 2025, at 12:33 PM, David Knecht <davida...@gmail.com> wrote:

I haven’t replaced but i did rebed mine last winter. I used a wire strung between two dowels to start freeing it then started pounding wooden wedges in on all sides and also a stiff paint scraper with a wide blade. They all came out with no damage to deck. Dave

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[Eric Baumes]

Mine are rectangular. I don't remember returning that order, but it was 7 years ago.

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[Eric Baumes]

Hmmm, Interesting. This was from my order in 2016. I guess it was 9 years ago!!!

 

But if I look up the part number (39920030), it is for a #20.

Eric

[Ben Sutton]

A bit of a mystery.

Anyway I did lots of measuring and took pictures. I have committed to Ocean 20 hatches without flanges.

Pictures below of old ones in place.

FYI the electrical tape is a great temporary fix for leaks.

Ben

On Aug 14, 2025, at 2:32 PM, Eric Baumes <eric....@gmail.com> wrote:



Hmmm, Interesting. This was from my order in 2016. I guess it was 9 years ago!!!

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