Boat tie spark coil is a period 2 oscillator.
Boat on spark coil is about the thirty-sixth most common naturally-occurring oscillator in Achim Flammenkamp's census, being slightly less common than the cis-beacon down on long hook, approximately as common as the block on griddle, and more common than fore and back and 21P2.
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
- 23P2.212 at Heinrich Koenig's Game of Life Object Catalogs