More than a few people have reduced the size of the cabin table. Here is my way of doing it. I removed about 14” because someone else in a post used that number and it seemed about right. Once I had the table cut I re-cut the groove for the plastic edge and after shortening the edging I reattached it to the table.

I bought iron-on laminate to hide the existing groove cut in the edge of the cut-off piece. It was easy to apply and inexpensive.

Iron on laminate

I bought threaded inserts that are made for wood on the outer diameter and 8-32 machine screw thread on the inside.

Threaded insert

I bought a set of drill stops, for a few dollars, that you attach to the drill bit and they make sure you can’t drill too deep. I clamped the brackets on to the table and after marking the hole location. I carefully drilled holes in the top and then I screwed in the threaded inserts.

Threaded insert 2

I went to the local Menards and bought white shelf brackets because they were already painted and along with the slots, they have 4 holes for mounting to the wall. I used these holes to fasten the parts together and used them as a template for drilling the holes in the table and cut-off piece. I then attached shelf brackets to the table. Make sure they do not come out to the end of the cut-off piece or it won’t fit in the v-berth groove.

Shelving brackets

I bought six knobs and added the screws because I couldn’t find exactly what I wanted, two are longer because the plastic edge on the table lifts the bracket and it is not flush with the bottom of the table at that point. I could have cut down the edge to make it flush but I elected not to.

Knobs

I set the cut-off piece on the brackets, marked the hole locations and drilled and inserted the threaded adapters.

Threaded inserts in cut-off piece

Cut-off piece attached

Cut-off piece attached 2

I made this horseshoe shaped adapter from ¾” plywood because it makes the cut-off piece exactly the right height for the v-berth groove.

u-shaped adapter

u-shaped adapter 2

Table extension in place for v-berth

Table extension in place for v-berth 2

Table extension for eating

The brackets pivot under the table when not in use.

Brackets out of the way

The cut-off piece goes under the cushion.

Cut-off piece stowed

Brackets hidden and everything ship-shape.

Finished!

(Note: it appears that the author was unable to upload all intended photos.)