Since changing the design of my steps due to the toilet tank not fitting I have had to rethink the stairs from the stern deck.
Having never made a stair case before I decided to google it. Within a few listed results I came a cross a staircase calculator.
I put in the required dimensions and after a bit of fiddling with the settings I got a plan to make the stringer. I had to fiddle with the settings as the calculator is designed for a building and as we all know boat stairs tend to be steeper.
I marked it out on a off cut of ply
I cut it out
Low and behold it worked!
I had to cut a slot in it to go over the bulkhead. This will now serve as the final template for the staircase. The first 2 steps down will be folded steel. This will finish behind the ply lining, the lower 3 will be made from wood and will join on in front of the ply lining. All the runners and risers will look the same when finished. I plan on putting the consumer units under the stairs and making one of them removable for easy access.