Does anyone know of a jet amphibian that can take off and lane vertically? in a space the size of an oilrig helipad for instance. even a amphibious osprey would do the trick.
If you wanted to simply make an Osprey amphibious, it can be done with a bit of patience. You just have to add some float points to aircraft config file. I've even done it to Vlad's Osprey before.