x = 27, y = 5, rule = B34/S34
13bo$bo9b3o10bo$oo9bobbo8bobbo$oo9bo13boo$bo9b4o9b3o!
Here are three period 3 spaceships which have been known for a long time.
The first two travel orthogonally at c/3, the last one travels diagonally
at c/3.
