An old idea of mine was to put a Ship in a bottle, but I didn't (and still don't really) have any idea about old rigged sailing ships.
So the idea was to put a modern vessel in a bottle, however due to their generally large lengths and slender shapes, they would become so narrow and low that they'd fit through the neck of a bottle without any manipulation.
Recently however I found a vessel with acceptable measurements and a good challenge to put in a bottle. During research I never quite found a good guide around the net, but recently I discovered this board and Glenn McGuire's (as well as IgorSky and others') build logs. Their ideas gave me the right input to start my first own SIB. So here it comes.
As the title says, the ship is the Sea Installer from the DEME company. She is a jack-up wind installation vessel used for installing foundations on the seabed, mounting transition pieces on top of installed foundations as well as complete windmills on top of those transition pieces. She is one of the rare versions of these vessels that jacks herself up on cylindrical legs (= like ship's masts) rather than lattice legs, which makes her suitable.
Following Glenn's builds my idea was now to put a seafloor of acrylic gel mixed with sand on the bottom to have a solid floor. Then I'd install the vessel on her legs and pour transparent epoxy to simulate the water layer.
I was warned by Glenn's posts about the extremely slow drying times inside bottles, so I tried several things to solve this issue. Since the acrylic-sand-water mix is basically hardening by evaporating the water, I put it on one of my central heating heaters and when droplets started forming on top, I inserted a styrene tube and blew with my airbrush compressor through that tube. This way you insert relatively dry air inside the end of the bottle and the moist air is pushed out through the neck, around the tube. Once the droplets were gone again, I stopped and let it sit untill droplets formed again. Here is a picture of that process. The small diameter tube is inside.
Since I never tried anything like this before, I decided to invest in a full size prototype to trial the engineering behind my build.
This gave me an idea of the size I'd be dealing with and the issues I might have. Here she is standing next to the original leg design (based on the hinging mechanism for sailing ships I picked up over here. The idea was to hide the hinge by pulling the hull over them. Although I had a tight fit around those hinges, I was affraid the leg would drop out while inserting it into the bottle or pushing the hull unevenly over the four legs with no room for correction inside the bottle.
So I decided to make a reduction in diameter around the hinge with smaller holes in the hull. This way the leg would not be able to fall down during inserting, and the hull would not be pushed to deep on any of the legs, since it would rest on the larger diameter lower section.