Assertion: anchor's fluke | /r/HasProperty | self-righting roll-bar
Facets:
Source sentences:
text: New Zealander Peter Smith in the early 2000s took elements of the Spade and other types, and developed unique solutions of his own, in order to design the "Rocna" anchor, a general purpose type which uses a concave fluke, a self-righting roll-bar, and setting skids.