Answer: slipknots

AnswerCrossword Clue
SLIPKNOTSRelatives of running bowlines.
SLIPKNOTSBoatswain's concern.
SLIPKNOTSRelatives of half hitches
SLIPKNOTSScouts' creations
SLIPKNOTSRunning bowlines, e.g.
slipknotsSLIPKNOT, a type of knot