Kerbal Space Program

Hi, i'm Linkdeous, i have a problem since KSP 1.0.3 (If i remember well)

The problem is , when using a tall ship, even somme little one, when leaving them in the water (exemple : a basic boat)
when re-entering in the physics range with a plane, the boat just get propulsed something like 500 meters up in the air...
When using the "ù" button (My button to switch vessel) or when ,after click on "switch to", or "fly" in the space center, the WHOLE kerbin/ship disspear, ... no more planets, no more boat, nothing, just the space, the altitude meters show only 500 meters tough .... really strange isn't it ? So, to be short, the problem from KSP 1.0.5 / 1.0.3 with the physics range is still alive ... Does there is a way to "safely" put a ship on land , or at least something that can prevent my ship to be ejected 500 meters high in the sky ? Thanks you very much ^^