Many new (and some not so new) yachts are not fitted with headboards to their bunks, probably to reduce manufacturing costs.
My wife has a convenient bulkhead to lean her head against but on my side of the bunk, the mattress ends with a sheer drop to the floor.
I’d been making do with a wedge of foam to stop my pillows falling off but it wasn’t very successful and it didn’t support my head when reading in bed.
With little else to occupy my mind on a cold winter’s night, I had a lightbulb moment when I suddenly realised the benefits that could be gained from having a headboard at the end of my side of