Method 2. Straws.

I already mentioned that the body of a ship can consist of a few parts. To make a more interesting model you can cut a wide body lengthwise and join them inside the bottle. The traditional method does not allow that, that is why there is another method called “straws” which, being complicated, is widely spread among model makers. You do not need to make a joint and put stays through the bowsprit, neither cut off unnecessary threads. The secret is in something else...

All the secrets of ships in bottles in this book: