There's a lot of wierd boats out there!
The model itself on many of these ships wouldn't be hard to make as there's not much projecting from the hull. I could probably make it.
There is one problem, however, and that has to do with the length of the ship. For example, the Visby is 72 meters long. Operation Flashpoint has a size limit on models to something like 50 (or is it 63) meters. There are workarounds, but they are complicated, certainly something
I would have a lot of trouble doing.