Welding on the flanges

So I want to beef up the area where the tunnel tubes meet the hull plating so I am installing a doubler flange on each penetration. I had cut the tubes so they extended roughly 1/2 inch past the hull plating on each side. I then took some 3/8 inch thick plate and cut an elliptical doughnut ring. The inner ellipse is 15 inches wide but 17 1/2 inches tall for the forward tunnel. The stern tunnel is canted back even farther so that ellipse is still 15 inches wide but 18 1/2 inches tall.

Here is a picture of the finished port side forward penetration –


And from another angle –


I debated whether to remove the TC bolts in the flange area and then bolt through the flange through the same hole in the hull and frame. Instead, I just cut the flange plate around the bolt heads and welded them into the flange.

It is nice that these flanges overlap the frames underneath – that will make it much stronger in case I was to take a hit in this area.

Here is the starboard side forward penetration –


Next is to do the same process with the stern tunnel and make some sort of guard to keep flotsam from clogging the propellors.

This entry was posted in Uncategorized and tagged , , . Bookmark the permalink. Post a comment or leave a trackback: Trackback URL.

Post a Comment

Your email is never published nor shared. Required fields are marked *


You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>