B0235/S0 has a diagonal replicator that repeats with period 4, moving diagonally at speed c/2.
The same rule also has a small 7c/14 orthogonal replicator:
The orthogonal replicator can pull a dot behind it at 14c/28, making the largest known spaceship with only three live cells in any rule:
Replicators -- Cellular Automata -- D. Eppstein -- UCI Inf. & Comp. Sci.