On 12 Feb 2016 at 22:57, Richard Aiken wrote:

> Since a ship exiting jump retains it's initial vector and velocity,
> that just makes using an xboat as a WMD a matter of somewhat chancy
> timing. If you can manage to have the ship emerge somewhere/when
> ahead of the planet along it's orbital path, then it's going to hit
> the surface *somewhere.* 

Nope. You forgot the uncertainty in the duration of jump.

Earth's orbital velocity is about 30 km/sec. so in an hour it moves
108,000 km. That's 13.5 diameters.

Given that jump duration varies a lot more than *just* an hour....

--
Leonard Erickson (aka shadow)
shadow at shadowgard dot com