Fix boat spawning
Is your feature request related to a problem? Please describe. When you spawn any sort of boat through the Simplex logistical station, they spawn at the "ground" level which also happens to be the bottom of whatever water reservoir you're spawning them in. Then they float up to level out at the sea level, which isn't a huge problem but it looks kind of stupid
Describe the solution you'd like I want Simplex to take the waterline into consideration, or at least a fallback, something along these lines: if spawning altitude is below 0, make sure to spawn the object at altitude 0 or 1, which would be the waterline
Describe alternatives you've considered
Additional context
Slingload module has the same behavior, attempting to unhook slung vehicle at terrain under water. If the ropes aren't long enough, the heli will just stay hovering at water level until some sort of timeout.
It would be nice if sling loading on water would release at water level instead.