Alternatively, the halyard locking device can be fitted on a mast chain plate. Among those external locks we distinguish two types :

the two-in-one locking swivels and the locks attached by a loop.

© Facnor

 

© Facnor
 

 The halyard can then run down inside or outside the mast.

 

 EXTERNAL HALYARD LOCK - COMMERCIAL BROCHURE
© Facnor